SELLING AS IS Unit not tested for functionality. Unit powers on. Will definitely need some cleaning and cannot verify if everything works

Here’s a nice Audio Research Foundation Series VT80 amp, originally in silver, now in black. I also have what I believe are some original silver trim pieces. If you want those, I will see if i can safely pack them in the original carton with the amp or you can just pay me the extra shipping cost to send a second and smaller box your way. When I got this unit I got in touch with ARC and I ordered the optional tube cage for it along with a new “Certified Matched” factory tube set featuring the SE-spec KT150 tubes. In the two years since, I’ve put just 57.9 Hours on that factory tube set. As you may know, the early units were sold as VT80 with KT120 tubes (as this one probably was). Soon after launch, they went to the larger KT150 tubes and with that change alone, these units became VT80SE tube amps. There was no other difference between VT80 or VT80SE. The SE came by virtue of a simple tube change alone. Here’s how the manufacturer explains it, better than I can: https://audioresearch.com/product/vt80se/______________________________________The big change from the VT80 to the new VT80SE is upgrading the KT120 tubes to the higher performance KT150 output tubes. Everyone should know that we have been deeply enamored with the KT150 as we feature it in all of our other amplifiers, from the VSi75 to the REF 750SE. Its performance is unparalleled and its 3,000 hour average life allows years of uninterrupted listening. The VT80 was originally designed with the KT120, the predecessor to the KT150, but these two tubes are electrically interchangeable and the demand for delivering the VT80 with the KT150 could be ignored no longer.It is important to mention that the KT150 tubes supplied by Audio Research, for all of our products, are tested and measured for quality control and assurance, and are burned in for 48 hours. Then using our “Certified Matched” process, they are hand matched in sets with tolerances 10x tighter than standard off-the-shelf tubes, thus ensuring the finest audio quality possible.With its auto-bias design, the VT80SE can also be used with KT120 or KT150 output tubes and the circuit will adjust immediately when a new tube is installed. Protective fuses are installed for each output tube and can be replaced if the need ever arises. What sonic improvements will you hear with the VT80SE? As our Warren Gehl said, “More music!” Tonal color, detail, dynamic swing and purity are all improved, along with a bigger and more robust presentation. The music gets better, in every way.Aside from the beautiful curves of the KT150 tubes, the only other way to distinguish the SE from the original VT80 is by a small sticker on the rear panel. Nothing else needed to change. The existing (optional) ventilated tube cover can be used with the taller KT150 tube set, there is still sufficient space to breathe. Hear for yourself how good your system can sound with the new VT80SE, it will make a tube-lover out of anyone who loves music.___________________________________________________Link to the manual: https://audioresearch.com/wp-content/uploads/2019/03/VT80SE-Manual.pdf The sound is phenomenal, as I’m sure you already know about these units. They engineered a first-ever auto-bias system for the tubes in these amps so you can put that little plastic screw driver away from prior AR amps! Used with care in my no-smoking home. You’ll get the manual and original power cord all in the original double-boxed factory carton.Reviewed 6 years by TAS: https://www.theabsolutesound.com/articles/audio-research-vt80se-power-amplifier/Serial #49745 for this unit and the box label is included in my photos.

Here’s a nice Audio Research Foundation Series VT80 amp, originally in silver, now in black. I also have what I believe are some original silver trim pieces. If you want those, I will see if i can safely pack them in the original carton with the amp or you can just pay me the extra shipping cost to send a second and smaller box your way. When I got this unit I got in touch with ARC and I ordered the optional tube cage for it along with a new “Certified Matched” tube set featuring the SE-spec KT150 tubes. In the two years since, I’ve put just 57.9 Hours on that factory tube set. As you may know, the early units were sold as VT80 with KT120 tubes (as this one probably was). Soon after launch, they went to the larger KT150 tubes and with that change alone, these units became VT80SE tube amps. There was no other difference between VT80 or VT80SE. The SE came by virtue of a simple tube change alone. Here’s how the manufacturer explains it, better than I can: https://audioresearch.com/product/vt80se/______________________________________The big change from the VT80 to the new VT80SE is upgrading the KT120 tubes to the higher performance KT150 output tubes. Everyone should know that we have been deeply enamored with the KT150 as we feature it in all of our other amplifiers, from the VSi75 to the REF 750SE. Its performance is unparalleled and its 3,000 hour average life allows years of uninterrupted listening. The VT80 was originally designed with the KT120, the predecessor to the KT150, but these two tubes are electrically interchangeable and the demand for delivering the VT80 with the KT150 could be ignored no longer.It is important to mention that the KT150 tubes supplied by Audio Research, for all of our products, are tested and measured for quality control and assurance, and are burned in for 48 hours. Then using our “Certified Matched” process, they are hand matched in sets with tolerances 10x tighter than standard off-the-shelf tubes, thus ensuring the finest audio quality possible.With its auto-bias design, the VT80SE can also be used with KT120 or KT150 output tubes and the circuit will adjust immediately when a new tube is installed. Protective fuses are installed for each output tube and can be replaced if the need ever arises. What sonic improvements will you hear with the VT80SE? As our Warren Gehl said, “More music!” Tonal color, detail, dynamic swing and purity are all improved, along with a bigger and more robust presentation. The music gets better, in every way.Aside from the beautiful curves of the KT150 tubes, the only other way to distinguish the SE from the original VT80 is by a small sticker on the rear panel. Nothing else needed to change. The existing (optional) ventilated tube cover can be used with the taller KT150 tube set, there is still sufficient space to breathe. Hear for yourself how good your system can sound with the new VT80SE, it will make a tube-lover out of anyone who loves music.___________________________________________________Link to the manual: https://audioresearch.com/wp-content/uploads/2019/03/VT80SE-Manual.pdf The sound is phenomenal, as I’m sure you already know about these units. They engineered a first-ever auto-bias system for the tubes in these amps so you can put that little plastic screw driver away from prior AR amps! Used with care in my no-smoking home. You’ll get the manual and original power cord all in the original double-boxed factory carton. See a separate listing for my PS Audio DirectStream Mk I DAC with the streaming Bridge II module.Reviewed 6 years by TAS: https://www.theabsolutesound.com/articles/audio-research-vt80se-power-amplifier/Serial #49745 for this unit and the box label is included in my photos.

Here’s a nice Audio Research Foundation Series VT80 amp, originally in silver, now in black. I also have what I believe are some original silver trim pieces. If you want those, I will see if i can safely pack them in the original carton with the amp or you can just pay me the extra shipping cost to send a second and smaller box your way. When I got this unit I got in touch with ARC and I ordered the optional tube cage for it along with a new “Certified Matched” tube set featuring the SE-spec KT150 tubes. In the two years since, I’ve put just 57.9 Hours on that factory tube set. As you may know, the early units were sold as VT80 with KT120 tubes (as this one probably was). Soon after launch, they went to the larger KT150 tubes and with that change alone, these units became VT80SE tube amps. There was no other difference between VT80 or VT80SE. The SE came by virtue of a simple tube change alone. Here’s how the manufacturer explains it, better than I can: https://audioresearch.com/product/vt80se/______________________________________The big change from the VT80 to the new VT80SE is upgrading the KT120 tubes to the higher performance KT150 output tubes. Everyone should know that we have been deeply enamored with the KT150 as we feature it in all of our other amplifiers, from the VSi75 to the REF 750SE. Its performance is unparalleled and its 3,000 hour average life allows years of uninterrupted listening. The VT80 was originally designed with the KT120, the predecessor to the KT150, but these two tubes are electrically interchangeable and the demand for delivering the VT80 with the KT150 could be ignored no longer.It is important to mention that the KT150 tubes supplied by Audio Research, for all of our products, are tested and measured for quality control and assurance, and are burned in for 48 hours. Then using our “Certified Matched” process, they are hand matched in sets with tolerances 10x tighter than standard off-the-shelf tubes, thus ensuring the finest audio quality possible.With its auto-bias design, the VT80SE can also be used with KT120 or KT150 output tubes and the circuit will adjust immediately when a new tube is installed. Protective fuses are installed for each output tube and can be replaced if the need ever arises. What sonic improvements will you hear with the VT80SE? As our Warren Gehl said, “More music!” Tonal color, detail, dynamic swing and purity are all improved, along with a bigger and more robust presentation. The music gets better, in every way.Aside from the beautiful curves of the KT150 tubes, the only other way to distinguish the SE from the original VT80 is by a small sticker on the rear panel. Nothing else needed to change. The existing (optional) ventilated tube cover can be used with the taller KT150 tube set, there is still sufficient space to breathe. Hear for yourself how good your system can sound with the new VT80SE, it will make a tube-lover out of anyone who loves music.___________________________________________________Link to the manual: https://audioresearch.com/wp-content/uploads/2019/03/VT80SE-Manual.pdf The sound is phenomenal, as I’m sure you already know about these units. They engineered a first-ever auto-bias system for the tubes in these amps so you can put that little plastic screw driver away from prior AR amps! Used with care in my no-smoking home. You’ll get the manual and original power cord all in the original double-boxed factory carton. See a separate listing for my PS Audio DirectStream Mk I DAC with the streaming Bridge II module.Reviewed 6 years by TAS: https://www.theabsolutesound.com/articles/audio-research-vt80se-power-amplifier/Serial #49745 for this unit and the box label is included in my photos.

Audio Research SP15 + PS15 Referenz Röhren Vorstufe *RARITÄT* Hier bekommen Sie HIFI Komponenten das ganze Jahr zum Vorzugspreis! Die Topas Vorteile • Ankauf oder Inzahlungnahme Ihrer Geräte möglich • Persönliche Beratung von der Chefetage • Langjährige HiFi Erfahrung • Lieferung nach Absprache möglich • Hilfestellung mit Problemlösung rund um ihre HiFi-Anlagen • Umzugshilfe für ihre HiFi-Anlagen • Bei Fragen rufen oder schreiben Sie uns gerne an Beschreibung Audio Research SP15 + Netzteil PS15 passend zu den ebenfalls von uns angebotenen 610T Monos Aus den USA eine absolute REFERENZ-Vorstufe die zur darmaligen Zeit die Creme de la Creme der Vorstufen war! Bis heute ist sie klanglich ein absoluter Kracher und sucht ihres Gleichen! Perfekt zu dieser Vorstufe bieten wir die einzigartigen Röhren Monoblöcke Audio Research Reference 610T zum kauf an! Technische Daten Siehe Herstellerangaben! Zustand und Zubehör Die beiden Geräte befinden sich dem Alter entsprechend in einem sehr guten Zustand! Verpackung und Versand Versand in der Originalverpackung! Sie erhalten beim Kauf eine Gewährleistung von 12 Monaten! Differenzbesteuert gemäß §25a UStG. - keine MwSt. ausweisbar! Wir sind ein familiengeführtes Unternehmen. Wir lieben, leben und verkaufen qualitativ hochwertige HIFI Geräte! Unser Konzept besteht aus dem zuverlässigen Verkauf von gepflegtem und gut erhaltenem High-End HiFi von Händlern und Herstellern sowie Privatpersonen mit namenhaften Produkten. Zudem nehmen wir gebrauchte High-End Bausteine von Privatpersonen in Zahlung. Dies bietet unseren Kunden die Möglichkeit, sich ohne großen finanziellen Verlust oder Aufwand mit ihrer HiFi-Anlage weiterzuentwickeln. Was unser Unternehmen ausmacht: • wir sind jung und dynamisch • gemeinsam haben wir mehr als 20 Jahre HiFi-Erfahrung • wir haben unser Hobby zum Beruf gemacht • wir legen größten Wert auf hochwertige Ware, sowie deren erstklassigen Zustand • für uns ist es entscheidend, das unser Kunde mit seiner Entscheidung am Ende des Tages glücklich und zufrieden ist • Transparenz beim Preis Suchen Sie ein High-End Gerät, wollen aber nicht neu kaufen? Sie möchten sich aber sicher sein, High-End im bestmöglichsten Zustand für Ihr Geld zu bekommen? Dann sind Sie bei uns richtig. Sie finden bei uns Vollverstärker, Vorverstärker, Endverstärker, Monoblöcke, Streamer, D/A Wandler, Röhrengeräte, CD-Player, Plattenspieler, Receiver, Tuner und natürlich Lautsprecher. Sollten wir einmal etwas nicht im Programm haben, erteilen Sie uns doch einfach einen Suchauftrag. Mit unseren weitläufigen Kontakten finden wir bestimmt in kürzester Zeit Ihr persönliches Wunschgerät für Sie. Jan Schlott zusätzliche Informationen: An- & Verkauf von Unterhaltungselektronik Abholung gerne möglich – bitte um vorherige telefonische Absprache nachfolgend finden Sie die rechtlichen Informationen, AGB’s, Widerrufsbelehrung sowie Rückgabebelehrung

Here’s a nice Audio Research Foundation Series VT80 amp, originally in silver, now in black. I also have what I believe are some original silver trim pieces. If you want those, I will see if i can safely pack them in the original carton with the amp or you can just pay me the extra shipping cost to send a second and smaller box your way. When I got this unit I got in touch with ARC and I ordered the optional tube cage for it along with a new “Certified Matched” tube set featuring the SE-spec KT150 tubes. In the two years since, I’ve put just 57.9 Hours on that factory tube set. As you may know, the early units were sold as VT80 with KT120 tubes (as this one probably was). Soon after launch, they went to the larger KT150 tubes and with that change alone, these units became VT80SE tube amps. There was no other difference between VT80 or VT80SE. The SE came by virtue of a simple tube change alone. Here’s how the manufacturer explains it, better than I can: https://audioresearch.com/product/vt80se/______________________________________The big change from the VT80 to the new VT80SE is upgrading the KT120 tubes to the higher performance KT150 output tubes. Everyone should know that we have been deeply enamored with the KT150 as we feature it in all of our other amplifiers, from the VSi75 to the REF 750SE. Its performance is unparalleled and its 3,000 hour average life allows years of uninterrupted listening. The VT80 was originally designed with the KT120, the predecessor to the KT150, but these two tubes are electrically interchangeable and the demand for delivering the VT80 with the KT150 could be ignored no longer.It is important to mention that the KT150 tubes supplied by Audio Research, for all of our products, are tested and measured for quality control and assurance, and are burned in for 48 hours. Then using our “Certified Matched” process, they are hand matched in sets with tolerances 10x tighter than standard off-the-shelf tubes, thus ensuring the finest audio quality possible.With its auto-bias design, the VT80SE can also be used with KT120 or KT150 output tubes and the circuit will adjust immediately when a new tube is installed. Protective fuses are installed for each output tube and can be replaced if the need ever arises. What sonic improvements will you hear with the VT80SE? As our Warren Gehl said, “More music!” Tonal color, detail, dynamic swing and purity are all improved, along with a bigger and more robust presentation. The music gets better, in every way.Aside from the beautiful curves of the KT150 tubes, the only other way to distinguish the SE from the original VT80 is by a small sticker on the rear panel. Nothing else needed to change. The existing (optional) ventilated tube cover can be used with the taller KT150 tube set, there is still sufficient space to breathe. Hear for yourself how good your system can sound with the new VT80SE, it will make a tube-lover out of anyone who loves music.___________________________________________________Link to the manual: https://audioresearch.com/wp-content/uploads/2019/03/VT80SE-Manual.pdf The sound is phenomenal, as I’m sure you already know about these units. They engineered a first-ever auto-bias system for the tubes in these amps so you can put that little plastic screw driver away from prior AR amps! Used with care in my no-smoking home. You’ll get the manual and original power cord all in the original double-boxed factory carton. See a separate listing for my PS Audio DirectStream Mk I DAC with the streaming Bridge II module.Reviewed 6 years by TAS: https://www.theabsolutesound.com/articles/audio-research-vt80se-power-amplifier/Serial #49745 for this unit and the box label is included in my photos.

Here’s a nice Audio Research Foundation Series VT80 amp, originally in silver, now in black. I also have what I believe are some original silver trim pieces. If you want those, I will see if i can safely pack them in the original carton with the amp or you can just pay me the extra shipping cost to send a second and smaller box your way. When I got this unit I got in touch with ARC and I ordered the optional tube cage for it along with a new “Certified Matched” tube set featuring the SE-spec KT150 tubes. In the two years since, I’ve put just 57.9 Hours on that factory tube set. As you may know, the early units were sold as VT80 with KT120 tubes (as this one probably was). Soon after launch, they went to the larger KT150 tubes and with that change alone, these units became VT80SE tube amps. There was no other difference between VT80 or VT80SE. The SE came by virtue of a simple tube change alone. Here’s how the manufacturer explains it, better than I can: https://audioresearch.com/product/vt80se/______________________________________The big change from the VT80 to the new VT80SE is upgrading the KT120 tubes to the higher performance KT150 output tubes. Everyone should know that we have been deeply enamored with the KT150 as we feature it in all of our other amplifiers, from the VSi75 to the REF 750SE. Its performance is unparalleled and its 3,000 hour average life allows years of uninterrupted listening. The VT80 was originally designed with the KT120, the predecessor to the KT150, but these two tubes are electrically interchangeable and the demand for delivering the VT80 with the KT150 could be ignored no longer.It is important to mention that the KT150 tubes supplied by Audio Research, for all of our products, are tested and measured for quality control and assurance, and are burned in for 48 hours. Then using our “Certified Matched” process, they are hand matched in sets with tolerances 10x tighter than standard off-the-shelf tubes, thus ensuring the finest audio quality possible.With its auto-bias design, the VT80SE can also be used with KT120 or KT150 output tubes and the circuit will adjust immediately when a new tube is installed. Protective fuses are installed for each output tube and can be replaced if the need ever arises. What sonic improvements will you hear with the VT80SE? As our Warren Gehl said, “More music!” Tonal color, detail, dynamic swing and purity are all improved, along with a bigger and more robust presentation. The music gets better, in every way.Aside from the beautiful curves of the KT150 tubes, the only other way to distinguish the SE from the original VT80 is by a small sticker on the rear panel. Nothing else needed to change. The existing (optional) ventilated tube cover can be used with the taller KT150 tube set, there is still sufficient space to breathe. Hear for yourself how good your system can sound with the new VT80SE, it will make a tube-lover out of anyone who loves music.___________________________________________________Link to the manual: https://audioresearch.com/wp-content/uploads/2019/03/VT80SE-Manual.pdf The sound is phenomenal, as I’m sure you already know about these units. They engineered a first-ever auto-bias system for the tubes in these amps so you can put that little plastic screw driver away from prior AR amps! Used with care in my no-smoking home. You’ll get the manual and original power cord all in the original double-boxed factory carton. See a separate listing for my PS Audio DirectStream Mk I DAC with the streaming Bridge II module.Reviewed 6 years by TAS: https://www.theabsolutesound.com/articles/audio-research-vt80se-power-amplifier/Serial #49745 for this unit and the box label is included in my photos.

For sale is an Audio Research SP15 hybrid preamplifier with its external SP15S power supply and brand new factory boxes in very good condition. Our tech has gone through and confirmed this preamp is in perfect working condition. Cosmetically there are some signs of use along the top edges of both pieces, and some scratches on the sides that can be seen in the pictures. But there are no blemishes that can take away from the sonic beauty of this preamplifier! The SP15 is an amazing preamp that has garnered a lot of attention in the hifi world since its release in the 1980s. This is one of those pieces of gear that you have to consider when it pops up on your radar. Specifications:Frequency response: 0.2Hz to 100kHzTotal harmonic distortion: 0.005%Gain: 75dB (MM), 29dB (line)Signal to noise ratio: 76dB (MM), 110dB (line)Output: 2V (Pre out), 80V (Pre out Max)Valve complement: 3 x 6DJ8/ECC88Dimensions: 480 x 134 x 260mmWeight: 6.4kgAccessories: separate SP-15PS power supplyYear: 1988 Decibel Audio is a retail store and custom installation business in the Wicker Park neighborhood of Chicago. We have serviced the Chicagoland area with new, used and vintage equipment for over 20 years. Visit our brick and mortar store at 1429 N Milwaukee Avenue, Chicago, IL 60622. We are authorized dealers for AKG, Audioengine, Audioquest, Bellari, Bluesound, B&W, Cambridge Audio, Cary Audio, Clearaudio, Cleer headphones, Dali, Denon, Draper Screens, Dynaudio, Grado, Harbeth, Hegel, Iso Acoustics, Jolida, JBL Pro, James Loudspeaker, KEF, KLH, Lehmann Audio, Marantz, Music Hall, NAD, Ortofon, Parasound, Pro-Ject, PSB Speakers, Plateau, Rega, Rogue Audio, Russound, SONOS, Samsung, Skylan, Vicoustics, Yamaha, and more. All shipping is via UPS or USPS as noted in each listing, unless other arrangements are made. Buyer is responsible for reviewing cosmetic condition detailed in photos before bidding. You are welcome to pay with Visa, MC, Discover, AmEx, Etc. We prefer Paypal for international bidders. Local customers are welcome to view and pick up auction items during store hours. All customers must pay Illinois Sales Tax if picking up in store. Illinois residents please add 10.25% sales tax for shipped items.

Hand built hi definition hybrid tube preamplifier with separate (isolated) power supply. I bought this from a family of a HiFi enthusiast who passed away in Los Angeles CA last year. It had been in storage for years. I had the components tested and replaced 2 power supply capacitors with OEM ARC caps. I replaced the feet with original ARC feet supplied by Greg Christenson at ARC. The unit sounds outstanding and does everything well. The components are very clean and well presented. I wanted to keep the units for years but I have switched to a PS Audio Direct Stream II DAC which doubles as a preamp. I cannot afford both so the ARC has to go. Id keep it if I still used vinyl as the phono stage is second to none. In defense of the ARC it makes a LOT more volume than the PS Audio so if you like your music loud on occasion you need a preamp. The DAC cant make adequate output to raise volume above loud conversational level. The umbilical cord is as new. Audio Research SP15 Review by James Leahy.Source: Dr Hi.Fi. House Calls – Since 1984 – Found at:http://www.drhifi.net.au/Reviews/ARC%20SP15%20Review/1.htm The Audio Research SP15 was introduced to the world in 1988 and is a full functioning Pre-Amplifier with Inbuilt Phono Stage. As can be seen from the pictures, the SP15 is constructed on Two (2) Chassis, utilizing Aircraft-Quality Connectors and an Interconnect Cable Forty-Eight (48 ) Inches long. The Unit is divided into an Active Amplification Chassis (SP15) And A Power Supply Chassis (SP15PS).A Custom Interconnect Cable of longer length is available from Audio Research at additional cost, although some degradation of performance will occur as the Cable lengthens.The Power Supply is in the pictures, as well as the Control Section.If you are a Control Freak, this is the Pre-Amplifier for you. It has a plethora of functions to play with and is the ultimate in flexibility.The Power Supply has Two (2) Controls, One is the Main Power and the other is the Auxiliary Power Outputs for various other components that can be Switched On or Off via the SP15.There is a five level attenuation control that is designed to equalize source levels and give a huge range of volume control to the pre-amplifier. It is graded in 6dB increments and is adjustable down to -24dB.The Volume Control is the usual Analogue Pot with Graduated Positions being used for this Multi-Ganged Heavy Gold Platted Unit designed to minimize Sonic Degradation of Microvolt Level Analogue Signals.There is a Balance Control that is useful in some poor acoustical environments.There is One (1) Pair of Balanced Outputs as well as Two (2) Pairs of Single Ended outputs. As always, I recommend using the Balanced Output to connect up to your Power Amplifier, if it has this available too.The SP15 has Mono, Stereo, Left, Right and Reverse listening modes.The Phono Circuit has impedance settings of 3, 10, 30, 100, and 47 K ohm.There is also a Direct Mode that in the Bypass position, directly connects the Attenuator to the Output of either the RIAA Compensated Phono Amplification Circuitry or a selected Line-Level Source (such as CD…),The Balance, and Mode Controls, as well as the Monitor Switch are removed from the Active Circuit path when this Switch is in operation.The Bypass Switch is provided for use with Audiophile-Quality Program Material or whenever Maximum Fidelity to The Input Signal is desired.There are Three (3) 6922 Vacuum tubes used in Intermediary Gain Stages in the Phono Section of the SP15.Each of the levels of Circuitry Amplification is provided with its own electronic regulation in the form of a Capacitance Multiplier, providing essentially zero impedance power supplies with essentially infinite isolation between circuit sections. Thus, the active circuitry is allowed to operate near theoretical performance levels.The separate Active Chassis contains both the High-Gain, RIAA Equalized, Magnetic Phono Preamplifier and the Line Level Circuitry, plus all of the Inputs, Outputs and various Function Controls.Extensive use has been made of State-Of-The-Art Audio Materials, including such items as Polypropylene And Polystyrene Dielectric Capacitors, Metal Film Resistors, Wire-Wound Resistors, proprietary Point-To-Point Internal Wiring, Gold-Plated Input and Output Connectors, Heavily Gold-Plated Switches, and other high-quality components.The SP15 is The Ultimate Pre-Amplifier even to this day that has an inbuilt Phono Section. The improvements over the much loved but not forgotten SP11 are as follows:Like the SP11, the new SP15 is a Hybrid Preamplifier using both Vacuum Tubes and Semiconductors as gain devices.However, the SP15 uses only three (3) tubes compared to the SP11s six;and whereas the SP11s tubes were employed in both phono and line sections, the SP15s tubes are confined to the Phono Section alone.As in the SP11, these tubes are not required to be selected, low-noise types.The changes in the SP15 line section (as compared to the SP11) are not limited to choice of gain devices. Resistance to input overloads, reduction of inherent noise levels, resistance to inter-input crosstalk and dynamic headroom have all been achieved as a result of circuit redesign in this area.Convenience features and controls remain similar to the SP11, but with some significant additions. The familiar Gain control has been replaced by a 5-position Attenuator switch having 6dB increments, resulting in better sonics while maintaining a useful selection of settings to match the output characteristics of both phono cartridges and CD players.Tape and dubbing functions remain identical to the SP11.On the back of the SP15 are new provisions for either Conventional (i.e. Single-Ended) or Balanced Output connection(s). Balanced connections can be made via the RCA jacks labeled Direct and Invert, or by using the new industrial XLR connector provided.Like the SP11, the SP15 is a Two (2) Chassis design isolating Power Supply functions from sensitive Preamplifier Circuits, reducing the opportunity for magnetic field effects to degrade sonic performance.A Toroid Power Transformer minimizes mechanical buzz and hum. See Installation Instructions for details on proper placement of the Two (2) chassis relative to one another.THE INSTALLATION INSTRUCTIONS AND THE OWNERS MANUAL ARE PDF AND INCLUDED IN THIS SALE VIA EMAIL.The SP15 reflects a further evolution and refinement of the idea that state-of-the-art preamplifier performance can be combined with real-word user convenience and system flexibility.Care has been taken to optimize the sonic performance of a variety of popular input options -- video, compact disc, tuner and analogue tape, as well as unsurpassed phono reproduction.Sonic Evaluations:The SP15 was fired up with Kim Carnes timeless classic Bette Davis Eyes from the Mistaken Identity album (EMI Records, 1981). The soundstage was both wide and deep. I was more than a little impressed with the sonic maturity of this product even by todays standards.The SP15 had an impressive level of drive and slam compared to the LS15 that I reviewed at the same time.The SP15 was in a different class sonically and had a marvelous top end that was not harsh or brittle. The midrange was smooth without any obvious flaws or trouble spots. Bass extension was well defined and quick.On the whole it is a very worthwhile unit with great features that would surpass all in the SP line up that I have heard. Even the latest SP16 that I have tried and did not take to.For all those who wish to know about the quality of the Phono Stage in the SP15, read on.The internal phono stage of the SP15 is the best that I have heard in an integrated component. However this is not saying much.I have done extensive comparisons with the SP15 and the separate Audio Research PH5 Phono Stage and the difference in quality is huge.As I would have expected, I was just not prepared for the level of difference that could be heard when I paired up the SP15 with the PH5. It was JAW DROPPING. If you are into your vinyl then the PH5 is a must have as you can by-pass the phono section in the SP15 while still maintaining use of all the other great benefits of this wonderful classic unit.Audio Research Corporation3900 Annapolis Lane NorthPlymouth, MN 55447-5447www.audioresearch.comPLEASE NOTE:INCLUDED IN THIS SALE ARE THE FOLLOWING:1. Two original ARC boxes with factory inserts. One (1) Set of Vacuum Tubes (Previously Used). I will remove the Tubes, prior to shipment and professionally wrap them separately from the Two (2) Amp Chassis.

Wenn Sie von dem US Marktplatz bestellen, können für die Pakete Steuern und Zollgebühren anfallen, die der Käufer später tragen muss.Audio research LS1 Vorverstärker, SP15 Amp Rohre! Ad Von 1990Das Datenblatt dieses Produkts wurde ursprünglich auf Englisch verfasst. Unten finden Sie eine automatische Übersetzung ins Deutsche. Sollten Sie irgendwelche Fragen haben, kontaktieren Sie uns. Das ist eine tolle Anzeige aus dem Jahr 1990! Großartig für Sammler! Dies sind seltene Vintage-Anzeigen für großartige Audio- und Videogeräte. In meinem eBay-Shop finden Sie viele weitere Anzeigen zum Thema Elektronik. Bereit zum Einrahmen und Anbringen an der Wand! 100 % Original, keine Kopien oder Reproduktionen.  Ich versende weltweit! -Diese Anzeigen sehen gerahmt oder in einem Ordner toll aus. Sie können auch beim Verkauf Ihrer Geräte einen Mehrwert schaffen, da viele von ihnen Spezifikationen und Details zur Audioausrüstung enthalten!  -Bei Fragen senden Sie bitte eine E-Mail. Schauen Sie sich meinen Ebay-Shop ELECTRONICS ARCHIVES an, um viele weitere Vintage-Anzeigen zu finden!    -Alle unsere Anzeigen sind 100 % ORIGINAL! Sie stammen aus dem Jahr, in dem sie aufgeführt sind.  -Zufriedenheit garantiert! DANKE!  ELEKTRONIK-ARCHIV Angetrieben von eBay Turbo ListerDas kostenlose Listing-Tool. Listen Sie Ihre Artikel schnell und einfach auf und verwalten Sie Ihre aktiven Artikel.Das ist eine tolle Anzeige aus dem Jahr 1990! Großartig für Sammler! Dies sind seltene Vintage-Anzeigen für großartige Audio- und Videogeräte. In meinem eBay-Shop finden Sie viele weitere Anzeigen zum Thema Elektronik. Bereit zum Einrahmen und Anbringen an der Wand! 100 % Original, keine Kopien oder Reproduktionen. -Diese Anzeigen sehen gerahmt oder in einem Ordner toll aus. Sie können auch beim Verkauf Ihrer Geräte einen Mehrwert schaffen, da viele von ihnen Spezifikationen und Details zur Audioausrüstung enthalten!  -Bei Fragen senden Sie bitte eine E-Mail. Schauen Sie sich meinen Ebay-Shop ELECTRONICS ARCHIVES an, um viele weitere Vintage-Anzeigen zu finden!  -Alle unsere Anzeigen sind 100 % ORIGINAL! Sie stammen aus dem Jahr, in dem sie aufgeführt sind. Das kostenlose Listing-Tool. Lis Brand audio research Type Paper Compatible Brand audio research

READ ALL THE DESCRIPTION Vintage N.E.A.R. NEAR New-England Audio Resource Research 15M SpeakersOverall in good cosmetic condition, both tweeters work good, grills in good condition, both frames are broken but still hold together.I am NOT sure but I think both woofers are NOT the original, NOT SURE, anyway they dont work good. SALE IS AS IS FOR PARTS OR REPAIRS, NO RETURNS PLEASE MAKE SURE TO CHECK ALL PICTURES FOR DETAILS