Super clean and functional Audio Research LS-2 with LS2-b upgrade. Comes with all receipts including the Ls-2b upgrade. Original box, manuals. Sounds amazing! Comes with 4 extra tubes as well! Deoxed gain pot; no more scratch while adjusting volume. No returns on electronics

Super clean and functional Audio Research LS-2 with LS2-b upgrade. Comes with all receipts including the Ls-2b upgrade. Original box, manuals. Slight scratchy sound occasionally when adjusting the gain. I’m assuming a little deox and it would clear it up. Sounds amazing! Comes with 4 extra tubes as well! No returns on electronics

Audio Research LS26 amazing sounding preamp. Used working good sold as is, with 2 sets of tubes. One set is new and the other has 2K hours. Original box, remote, manual and power cord. I am selling as I moved up the Audio Research line. Shipping to continental US only, local pickup welcome.

Audio Research released the LS28 as part of its foundation series. Its heart and soul is all Audio Research. Wide open presentation, transparent vocals , sonically holographic and will make a significant improvent to most hi-end audio systems. The LS28 later received an upgrade to the LS28SE and its currently $12,000. It went through a rework and make some nice sonic improvements. With 4 balanced inputs and 4 unbalanced, it will handle even the largest of systems. This is a super clean trade and includes the original remote and box. Its been tested and sounds fantastic. If youve been looking to take you system to the next level this is a great way to do it. FEATURES:Remote controlled, fully balanced pre-ampTubed preamplifier with four sets of balanced and unbalanced inputs eachThree sets of balanced and unbalanced outputsMono / StereoInput NamingHome Theater Bypass (Called processor mode)Auto-shutdownAdjustable brightnessBalance controlFour 6H30P (dual triodes)Electronically regulated power suppliesSPECIFICATIONS FREQUENCY RESPONSE - 2Hz–200kHz, +0/–3dBMAX VOLTAGE GAIN - 12dB, balanced output; 6dB, single-ended output.DISTORTION - <0.01% at 2V RMS, balanced output.INPUT IMPEDANCE - 120k ohms balanced, 60k ohms single-ended.OUTPUT INP . - 600 ohms balanced, 300 ohms single-ended main OUTPUT POLARITY - Non-inverting.Dimensions: 19 W by 6.5H by 13.7 D. Handles extend 1.5 (38mm) forward of front panel.Weight: 16 lbs Current Retail on the LS28 SE is $12,000

Audio November 2011. Im Heft sind unter anderem folgende Themen/Tests/Gerätebesprechungen zu finden: Mit Heft CD: the Nineties Wireless-Aktivboxen von Canton - Drahtlos Musik hören im ganzen Haus: Canton Your World / Your Duo Komplett-Systeme: Philips HTS 9540 Samsung HT-D6750W Vorverstärker: Audio Research LS-27 Endstufen: Audio Reseach VS-115 NAD C245 BEE PC-Boxen: XTZ MH-800 Netzwerk-Player: Denon DNP-720 AE Pro-Ject Stream Box DS Lautsprecher: Dynavox Impulse V KEF Blade Quadral Titan VIII AV-Receiver: Arcam AVR-400 Pioneer SC-LX 75 Anthem MRX-500 Surround-Set: Teufel System 10 THX Ultra 2 Report: Ray Kimber Die Audio Bestenliste: neue und frühere Geräte im Klang- und Preisvergleich; Referenzen und Klassenreferenzen Viele ausführliche CD- bzw. Plattenbesprechungen Anzeigen aus der damaligen Zeit und vieles mehr Zustand: ein paar Reste vom Adressaufkleber vorne Falls nicht ausdrücklich erwähnt, sind die Hefte immer ohne CD und sonstige Beilagen. Die Hefte sind auch alle mehr oder weniger gebraucht. Es können evtl. Markierungen bei der Announcen vorhanden sein. Auch ist vereinzelt der Adressaufkleber noch ganz bzw. teilweise vorhanden, es können auch noch Reste am Heft sein. Preisausschrauben wurden in der Regel ausgefüllt bzw. auch ausgeschnitten und sonstige Vorlagen zum Herausschneiden sind in der Regel entfernt. Ab und zu ist auch eine Plattenkritik ausgeschnitten. Abholung möglich oder Versand auf Kosten des Käufers. Versand erfolgt nach Zahlungseingang. Bezahlung muss innerhalb einer Woche erfolgen oder nach Vereinbarung mit mir. Nach der allgemeinen Regelung des Bürgerlichen Gesetzbuches (BGB) trägt grundsätzlich der Käufer das Risiko des Verlusts und der Beschädigung der Ware auf dem Transportweg (§ 447 Abs.1 BGB). Der Versand der Ware geschieht also auf Risiko des Käufers. Dieses Angebot ist privater, nicht gewerblicher Natur. „Verkauf gebrauchter Ware von Privat“. Keine Haftung für Tippfehler.

Audio research LS2 line stage stereo preamp amplifier. I am the original owner of this fine pre-amplifier. The receipt shown represents the last time this unit was serviced. Since that time it has probably been operated less than 50 hours. Unit has manual and original packaging. Supplemental comment: Just to be up front, the top cover of the unit is slightly bowed downward from the use of a weighted anti-vibration device.

This is For: Audio Research LS28 Tube Preamp - Near Mint Condition - Original Box Remote & Manual Harder to find in Black Low Tube Hours - 1019 Local Pick-Up Available Ships Fedex Home - to Wisconsin 53072 Zip

Follow us| Sign up for our newsletter Audio Research LS27 Audiophile Hifi Stereo Line Stage Preamplifier Box + Remote For over 20 years High End Audio Auctions has been selling the finest HiFi online, but did you know that we BUY your HiFi equipment as well? Contact our sister company STEREOBUYERS for a fair quote today! All items included are pictured. Items are tested fully to ensure all functions work as expected - any defects and additional service done to the item are noted below. Items are not restored or reconditioned, unless specified. All items we sell come with a 30-day warranty - your satisfaction is guaranteed. Original shipping on returns will be refunded at the sellers discretion. Local Pickup in NYC Available Audio Research LS27 Details & Testing Notes Cosmetic Condition:9/10: Excellent - Light use, no visible imperfections.Functional Notes:Functions as intended and sounds excellent. Voltage:120V 50/60HzSerial #:51105701Original Box:YesManual:NoRemote:YesPower Cord:YesShipping Method:FedEx Ground (Domestic) / FedEx Economy, USPS Priority, Ebay Standard Delivery (International)Shipping Weight:24lbs (24x22x12) High-End Audio Auctions has been THE trusted source for high-end, classic and vintage audio components on eBay since 2000! Our unique products, unparalleled service and bombproof packaging keeps our customers coming back again and again. We are experts at selling and shipping worldwide, with items ranging from $5 to $50,000. We look forward to earning your repeat business! By placing a bid on any of our listings, you agree to our terms & conditions Click here to learn more Home| About Us| Store Policies| FAQs| Feedback| Contact Us| Custom Tuned Cables _gsrx_vers_1680 (GS 9.8.3 (1680))

Audio Research LS2B tube preamplifier. Custom Aluminum/Viton rubber damping feet included Unit was recently professionally serviced and I will include documentation Well cared for unit from audiophile collection that I’m downsizing and ready for a new listener Working unit from my system but as with all vintage electronics will be sold as is with no returns Unit will ship in manufacturers original double box for added safety and fully insured Pictures are the description, please feel free to ask any questions I'm a small shop and depend on ebay to pay my bills. I am human and make mistakes, so please give me the opportunity to make things right if you’re not completely satisfied. *Ebay has something called (DSR's) ‘Detailed Seller Ratings.’ It is the star system at the bottom of the feedback page. PLEASE LEAVE 5 STARS! It is very important . If there is a problem with item please contact me before opening case or leaving DSR ratings!  The way ebay has it worded, 4 stars sounds pretty darn close to perfect, but as a seller, if I don't average higher than 4.9 stars, I could lose selling privileges. Please take this into account when leaving the Shipping Handling, Item As Described, Shipping time stars and leave a 5 across the board :-) **I FOLLOW ALL EBAY POLICES AND STRIVE FOR 5-STAR SERVICE EACH AND EVERY TRANSACTION. WHEN YOU GIVE 4 STARS IT MAY SEEM LIKE A GREAT SCORE BUT, A 4 ON ANY STAR IS 4.0 AND EBAY CONSIDERS THIS A SUB-PAR MARK SINCE THE REQUIREMENT IS 4.9. IF YOU ARE PLEASED WITH THE TRANSACTION PLEASE RESPOND WITH ALL 5 STARS. IF YOU ARE NOT PLEASED LET ME KNOW AND I WILL WORK TO MAKE IT THAT WAY. Feedback: Due to recent ebay policies regarding feedback I'm dedicated to my buyers in providing a 5 star customer service rating-but I do have a life outside of this wonderful world of ebay and sometimes make mistakes- I'm human too. Please be kind to sellers and consider that they to have lives when using the new rating system. Practice patience & understanding & please give a 5-star rating on each DSR or contact me if you are not satisfied.

Follow us| Sign up for our newsletter Audio Research LS27 Audiophile Hifi Stereo Line Stage Preamplifier Box + Remote For over 20 years High End Audio Auctions has been selling the finest HiFi online, but did you know that we BUY your HiFi equipment as well? Contact our sister company STEREOBUYERS for a fair quote today! All items included are pictured. Items are tested fully to ensure all functions work as expected - any defects and additional service done to the item are noted below. Items are not restored or reconditioned, unless specified. All items we sell come with a 30-day warranty - your satisfaction is guaranteed. Original shipping on returns will be refunded at the sellers discretion. Local Pickup in NYC Available Audio Research LS27 Details & Testing Notes Cosmetic Condition:9/10: Excellent - Light use, no visible imperfections.Functional Notes:Functions as intended and sounds excellent. Voltage:120V 50/60HzSerial #:51105701Original Box:YesManual:NoRemote:YesPower Cord:YesShipping Method:FedEx Ground (Domestic) / FedEx Economy, USPS Priority, Ebay Standard Delivery (International)Shipping Weight:24lbs (24x22x12) High-End Audio Auctions has been THE trusted source for high-end, classic and vintage audio components on eBay since 2000! Our unique products, unparalleled service and bombproof packaging keeps our customers coming back again and again. We are experts at selling and shipping worldwide, with items ranging from $5 to $50,000. We look forward to earning your repeat business! By placing a bid on any of our listings, you agree to our terms & conditions Click here to learn more Home| About Us| Store Policies| FAQs| Feedback| Contact Us| Custom Tuned Cables _gsrx_vers_1680 (GS 9.8.3 (1680))

Audio Research LS28 Preamplifier Minneapolis Minnesota as good as new 1AAA+++++++ My brother was original owner. like new used only a few times and with the original box.

From an audiophile to an audiophile - you are bidding on an heirloom item, the legendary Audio Research LS2B, a tube-hybrid preamplifier with XLR and RCA inputs and outputs. Built like a Ferrari, this was a Stereophile magazine Class A recommended product. Only serious audiophile buyers please, with perfect feedback score on eBay. HISTORY: Im the second owner, the preamp has been used sporadically (Im a freelance photographer, rarely home), always kept covered when not in use, in an air conditioned and smoke-free apartment. The tube installed is Telefunken E 88CC-TK 6922 Black Diamond Series, installed in February 2021, with very little hours on it. The preamplifier has never been serviced (never needed to), and it has all original parts in it. CONDITION: Fundctional: 10Cosmetic: 9 INCLUDED: Audio Research LS2B, serial number 92052023, power cord; user manual (reprinted). This preamplifier does not have volume remore control. SHIPPING:I ship to continental USA only (no international shipping) via UPS, signature required.PAYMENT:I accept payment via PayPal only. Buyer is responsible for the shipping address; when you submit the payment via PayPal, please make sure all address information is correct. Once you submit the payment, I am not able to ship to an alternate address. NOTES: Under no circumstances does seller assume liability or responsibility for injury or damages sustained in the use or operation of this equipment or for damages to any other equipment connected to it. SPECS:FREQUENCY RESPONSE± .5dB, 1Hz to 100Hz, -3dB points below 0.1Hz and above300kHzDISTORTION (THD)Less than .01% at 2V RMS output (typically less than .005%in midband)NOISE & HUM20µV RMS residual 1HF weighted noise at main unbalancedoutput with gain at minimum (100dB below 2V RMS output). xxx Balanced inputnoise 100dB below 1V input.GAINLS2: Main Output: 18dB. Balanced output: 24dB. Tape output:0dB (Optional 12dB gain reduction). LS2 MKII: Main Output: 18dB. Balancedoutput: 24dB. Tape output: 0dB (Optional 9dB gain reduction)INPUT IMPEDANCELS2: 50K ohms. LS2: 50K ohms unbalanced, 3 megaohm balanced.OUTPUT IMPEDANCELS2: 200 ohms main output. 500 ohms Balanced 1, Balanced 2(10K ohms minimum load and 2000pF maximum capacitance). LS2 MKII: 200 ohms mainoutput. 400 ohms Balanced 1, Balanced 2 (10K ohms minimum load and 2000pFmaximum capacitance)MAXIMUM INPUTSLS2: 20V maximum. LS2 MKII: 20V maximum unbalanced, 8.5Vmaximum balanced.RATED OUTPUTSLS2: 2V RMS 1Hz to 100kHz into 60K ohm load (maximum outputcapability is 10V RMS (20V RMS balanced) output at 05% THD at 1kHz into a 10Kohm load). LS2 MKII: 2V RMS 1Hz to 100kHz into 60K ohm load (maximum outputcapability is 30V RMS (60V RMS balanced) output at 05% THD at 1kHz into a 10Kohm load)POWER SUPPLIESElectronically-regulated low and high voltage supplies. Twotransformers (toroid for high voltage). Line regulation better than .01% TUBE COMPLEMENT: 6922 POWER REQUIREMENTS100-135VAC 60Hz (200-270VAC 50/60Hz) 60 watts maximumOTHERHybrid FET/Tube audio circuit, solid-state power supplyDimensions:19 (48 cm) W x 5 ¼ (13.4cm) H (standard rackpanel) x 10 ¼ (26cm) D. Handles extend 1 ? (4.1cm) forward of frontpanel. Rear chassis fittings extend ? (2.3cm).Weight:13 lbs.Age:1992

Preamplificador AUDIO RESEARCH LS22. Incredible “pure valve” preamp from Audio Research. The last of these features. The following were mixed. The best Audio Research preamplifier up to that moment, even than the LS2 or the SP11 in the classification of the prestigious HI-CRITICS magazine Totally recap. New Tesla NOS tubes much more musical than the originals. I have the originals, too. I have the originals valves too and can be send with the preamp and listen to compare. HIFI TUNING supreme 3 fuse. Original packaging (double box). Buyer pay shipping cost It is not the version with remote control. I am selling because I pass Krell system using CAST cable

This Audio Research LS25 MKII tube preamplifier is a high-quality device that offers a number of audio inputs, including stereo L/R RCA and XLR inputs. With two channels, this preamplifier is perfect for enhancing your audio experience and delivering superior sound quality. The brand, Audio Research, is well-known for producing top-of-the-line audio equipment, and this model, LS 25 MKII, is no exception. Whether youre a music enthusiast or a professional audio engineer, this preamplifier is an excellent choice for amplifying your audio signals. Its perfect for use in a home audio setup or in a professional recording studio. So, if youre looking for a reliable and high-performance preamplifier, the Audio Research LS25 MKII is an excellent choice. This particular unit was re-tubed, serviced and all switches cleaned in Dec 2023. Since then, it has about 100 hours on the new tubes. I purchased an Audio Research Reference 5se, so I will no longer be using the LS 25 MKII. That is the only reason I am selling it. The unit has a broken screw head in the top panel (right rear). The included remote control battery back tab (not control) is broken. A small piece of tape or a drop of glue works perfectly to hold it in place (See Photos). Visually the unit shows like new and has very few imperfections. The photos do it no justice. Sonically it is perfect! The unit will be packaged in the original box. Comes with manual, power chord and remote control. You are going to love it!

Description This unit powers on, however we could not get it to pass any audio and there we are selling the unit AS-IS for parts/repair as a non-working or incomplete unit. We have not tested / inspected any further, item may have unknown issues we are not aware of. See all item photos for the condition of the unit. Unless pictured, no power adapter / power cable included. The unit is on hand and ready to ship. Please feel free to message us with any questions you may have. Specifics Manufacturer Audio Research Model Number LS2B SKU 19-72256 Terms and Conditions Includes This listing includes only what is pictured or described. Please contact us for additional details. Many of our items take a standard PC style power cable (NEMA 5-15P to IEC-320-C13) which unless pictured is not included. We can include one if requested at the time of checkout free of charge. If unsure, please do not hesitate message us and we will be happy to confirm for you what is included with your purchase. If a custom power cord or AC adapter is required for the item, it is only included if pictured or described above. Shipping Details Shipping originates from zip code 95742. Unless otherwise specified, orders will be shipped by Fedex, USPS, GSO, or UPS at the seller’s discretion in order to ensure delivery by the estimated delivery date. Orders received by 8am PST are shipped same day, all other orders are shipped within 1 business day. Most listings offer Standard, Expedited, and Overnight shipping options. If these shipping options do not meet your needs, please contact us to make arrangements. We gladly ship international, please contact us for a quote if no shipping option is provided. All items are carefully packed with brand new packaging materials to ensure your item arrives on time and without damage. International Buyers Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyers responsibility. Please check with your countrys customs office to determine with these additional costs will be prior to bidding or buying. Customs fees are normally charged by the shipping company or collected when you pick the item up. These fees are not additional shipping charges. We will not under-value merchandise or mark the item as a gift on customs forms. Doing so is against US and international law. Privacy Rest assured your information will not be given, sold, rented or loaned to any third party.

Audio Research LS 28 Remote Control Used for shop demo. All features are working. Some scuffs and scratches. The Listening RoomThe Listening Room is a 3rd generation brick-and-mortar 2-channel Hi-Fi shop founded by my grandfather in 1978. We offer a range of audiophile stereo systems in our Chestertown, Maryland showroom and are the largest Magnepan speaker dealer in the world. We have decades of experience configuring great sounding audio systems, and can answer any questions that you have.

You are buying an used but in great condition Audio Research LS-22 Line Stage Amplifier audiophile Tube Pre Amplifier The condition is used, it shows some cosmetic scratches on the corners as you see in pictures, however it’s in great working order has been tested. Description of Controls GAIN CONTROL: Use it to control volume. Rotation to the left attenuates gain, rotation to the right increases gain. INPUT SELECTOR: Detents indicate selection of various source material options: Tuner for AM/FM radio tuners; Video for audio input from HiFi videotapes, discs or broadcasts; Phono for phono preamplifiers: CD for compact disc players or digi-tal-to-analog processors; Aux for any additional high level source - tape, tuner, CD, video, etc. The signal source chosen by the input selector is fed to the Tape outputs. NOTE: See Monitor/Source for primary tape recorder selection. POWER SWITCH: Supplies power from AC wall outlet to LS22 when in Power position. Although not strictly necessary, it is nonetheless good practice to put the LS22 in Mute before turning on power for maximum protection of your power amplifier(s) and speakers. NOTE: “The phone option “ is for phono preamplifiers only A copy of manual is included ( not original manual) New tubes GENALEC made in Russia are installed Specifications Model LS22 FREQUENCY RESPONSE: .5dB, 1.5Hz to 100kHz -3B points below 0.1Hz and above 400kHz. DISTORTION: Less than .010% at 2V RMS output. GAIN: Main output: 18.3dB Bal., 12.7dB Unbal. Tape output: OdB. INPUT IMPEDANCE: 200K ohms Balanced, 100K ohms Unbalanced, Inputs (6): tuner, video, phono, CD, aux, tape (XLR and RCA connectors). OUTPUT IMPEDANCE: 400 ohms Balanced, 200 ohms Unbalanced main (2), 20K ohms minimum load and 2000F maximum capacitance. Outputs (3): 2 main, 1 tape (XLR and RCA connectors). MAXIMUM INPUT: 20V maximum. RATED OUTPUTS: 2V RMS 1Hz to 100kHz into 100K ohm balanced load (maximum balanced output capability is 35V RMS at less than 0.5% THD at 1kHz) CONTROLS: Gain, Input selector. Toggle switches: Power/Off, Unbalanced/Balanced input, Monitor/ Source, Mute/Operate. POWER SUPPLIES: Electronically-regulated low and high voltage supplies. Automatic 45 sec. warm-up/brown-out mute. Line regulation better than .01%. NOISE: 12uV RMS residual IHF weighted balanced noise output with gain control minimum, (104dB below 2V RMS output). TUBE COMPLEMENT: 8-6922/E88cc dual triode. (Vacuum tube audio circuit, solid-state power supply) POWER REQUIREMENTS: 100-135VAC 60Hz (200- 270VAC 50/60Hz) 90 watts maximum DIMENSIONS: 19 (48 cm) W x 514 (13.4 cm) H (standard rack panel) x 11/4 (29.8 cm) D. Handles extend 1½/2 (3.8 cm) forward of the front panel. Rear chassis fittings extend ?8 (2.3 cm). WEIGHT: 17 Ibs. (7.7 kg) Net; 27 lbs. Pictures are part of the description so please see them carefully and make your own conclusion about the item’s WHAT YOU SEE IS WHAT YOU GET Thanks for looking selling as the pictures shown. ABOUT SHIPPING Shipping Within US 48 Continental States Only ( not shipping to HAWAII , ALASKA , PUERTO RICO , VIRGIN ISLAND , PO BOX OR APO ADDRESS) will be shipped by Fedex UPS Or USPS Ground according your location with free tracking number and It will be shipped thru the address provided by eBay so please make sure it's right during checkout! Feel free to any questions. For International buyer we will use eBay Global shipping option no exceptions. ABOUT RETURN Please contact seller if you have any inconvenience with your item, before open an eBay case or leave a negative feedback (There are many ways to solve any issue) Is very important for Us make our costumers happy’s. Buy with confidence ?????TOP SELLER ????? • See other items in our eBay page!!! https://www.ebay.com/str/jarvingracestore

Completely original Audio Research Line Stage Amplifier (Hybrid Preamplifier) model LS2 (note: LS2 is model listed on packaging and owners manual; LS2B is printed on rear of unit) There are 2 unbalanced (record and main) and 2 balanced (XLR) outputs. This item is in perfect condition with all original packaging including the factory double box. This preamp is also being shipped with a high end tube made in Holland. A fully tested Amperex 6DJ8 (ECC88) is included with the item! It would be difficult to find another one quite like this! Buyer pays all shipping costs

Network 220 V.Made in USA.For sale is an Audio Research LS-7 tube preamplifier, manufactured in 1995. In perfect condition. There are no problems or complaints.Complete set, box and manual, just like from a store. The lamps were installed by the manufacturer Sovtek 6922.I will pack and ship worldwide.

Completely original Audio Research Line Stage Amplifier (Hybrid Preamplifier) model LS2 (note: LS2 is model listed on packaging and owners manual; LS2B is printed on rear of unit) There are 2 unbalanced (record and main) and 2 balanced (XLR) outputs. This item is in perfect condition with all original packaging including the factory double box. This preamp is also being shipped with a high end tube made in Holland. A fully tested Amperex 6DJ8 (ECC88) is included with the item! It would be difficult to find another one quite like this! Buyer pays all shipping costs