Lyngdorf SDA 2175 High-Performance Power Amplifier.Working, excellent sound.Has some scratches.Comes with power cord.MADE IN DENMARK.SpecificationsPower output: 200 watts per channel into 8? (stereo)Frequency response: 0.3Hz to 33kHzTotal harmonic distortion: 0.01%Signal to noise ratio: 117dBSpeaker load impedance: 4? to 8?Dimensions: 450 x 361 x 100.6mmWeight: 13kgDescriptionThe SDA 2175 is a high-performance power amplifier designed without compromise. It can act as a controllable amplifier in Lyngdorf systems or as a power amplifier for conventional pre-amplifiers.The SDA 2175 is not your regular class D power amplifier. The output stage uses Pulse Width Modulation with a patented switch speed optimization technology. This ensures a low and linear natural distortion, and an unmatchable performance is achieved by using less feedback compared to typical Class D amplifiers.And the fully balanced signal path all the way through the amplifier to the PWM conversion stage guarantees a remarkable performance with a signal-to-noise ratio superior to any other Class D amplifier in the market!Careful and sensitive design touches can be seen throughout the amplifier: it starts at the mains input with a low-noise Holmgren toroidal transformer with power supply feed-forward compensation, suppressing the variations in the output rather than relying on feedback-based error correction normally used. This feed-forward technique originates from the design of the Millennium – the Lyngdorf state-of-the-art true digital amplifier.In the critical output stage only the highest quality components have been used, e.g. polypropylene capacitors and linear ferrite material in the output filter. Combined with other techniques this results in low and frequency-independent distortion. Consequently wideband musical instruments can be re-played without any added harmonics – any source will be recreated to sound the way it was recorded.Semi Digital Amplifier“Semi Digital” is in Lyngdorf terms a “digital” switching amplifier driven by an analog input. In principle, the output stage of most switching amplifiers has the same working principle. PWM = Pulse Width Modulation is simply a matter of variable open/close time of the transistors.Fully balanced signal pathThe amplifier is fully balanced from input to output if driven with a balanced source, and if not driven with a balanced source, the signal is immediately transformed to a balanced signal.The fully balanced design gives clear advantages regarding hum and noise suppression – also from other sources. And the balanced design is not only used in the signal path – even the feedback loop internally in the output stage is designed to be fully balanced.The signal path is furthermore DC coupled to the widest extent – except from DC blocking capacitors in the input the construction is DC coupled through the rest of the construction leaving no discussion about capacitor quality.In the analog signal chain only the highest quality components are used as Ultra low distortion Burr-Brown op-amps in the input stage and Polypropylene capacitors in the output reconstruction filter.Finish: black.

DescriptionAll items are shown in the pictures. If you cannot tell from the pictures please contact us. Due to differences in region codes some games CDs DVDs etc. may not ?be available. The voltage of some electrical products may be different. Please make sure to check before purchasing. PaymentPlease pay within 2 days of winning the auction. Shipping There have been delays in delivery due to the global pandemic. There may be a significant delay in the scheduled delivery date. Delivery Time Economy delivery? 3 to 4 weeks (Tracking numbers are not reflected in Australia Canada and some regions.) Standard delivery 2 to 3 weeks Terms of Sale If payment is not confirmed within 2 days of purchase the order will be cancelled. Returns are accepted within 60 days.International Buyers - Please Note: Import duties and taxes are not included in the item price or shipping cost. Please check with your countrys customs office for additional costs before bidding or purchasing. Duties and taxes are not collected by the shipping company. Please check with your countrys customs office for additional costs before bidding or purchasing. The act of declaring goods at a lower value or declaring goods as gifts is prohibited by international governments.

Great shape . Maybe signs of minor dust on them .

Lyngdorf SDA 2175 High-Performance Power Amplifier.Working, excellent sound.Has some scratches.Comes with power cord.MADE IN DENMARK.SpecificationsPower output: 200 watts per channel into 8? (stereo)Frequency response: 0.3Hz to 33kHzTotal harmonic distortion: 0.01%Signal to noise ratio: 117dBSpeaker load impedance: 4? to 8?Dimensions: 450 x 361 x 100.6mmWeight: 13kgDescriptionThe SDA 2175 is a high-performance power amplifier designed without compromise. It can act as a controllable amplifier in Lyngdorf systems or as a power amplifier for conventional pre-amplifiers.The SDA 2175 is not your regular class D power amplifier. The output stage uses Pulse Width Modulation with a patented switch speed optimization technology. This ensures a low and linear natural distortion, and an unmatchable performance is achieved by using less feedback compared to typical Class D amplifiers.And the fully balanced signal path all the way through the amplifier to the PWM conversion stage guarantees a remarkable performance with a signal-to-noise ratio superior to any other Class D amplifier in the market!Careful and sensitive design touches can be seen throughout the amplifier: it starts at the mains input with a low-noise Holmgren toroidal transformer with power supply feed-forward compensation, suppressing the variations in the output rather than relying on feedback-based error correction normally used. This feed-forward technique originates from the design of the Millennium – the Lyngdorf state-of-the-art true digital amplifier.In the critical output stage only the highest quality components have been used, e.g. polypropylene capacitors and linear ferrite material in the output filter. Combined with other techniques this results in low and frequency-independent distortion. Consequently wideband musical instruments can be re-played without any added harmonics – any source will be recreated to sound the way it was recorded.Semi Digital Amplifier“Semi Digital” is in Lyngdorf terms a “digital” switching amplifier driven by an analog input. In principle, the output stage of most switching amplifiers has the same working principle. PWM = Pulse Width Modulation is simply a matter of variable open/close time of the transistors.Fully balanced signal pathThe amplifier is fully balanced from input to output if driven with a balanced source, and if not driven with a balanced source, the signal is immediately transformed to a balanced signal.The fully balanced design gives clear advantages regarding hum and noise suppression – also from other sources. And the balanced design is not only used in the signal path – even the feedback loop internally in the output stage is designed to be fully balanced.The signal path is furthermore DC coupled to the widest extent – except from DC blocking capacitors in the input the construction is DC coupled through the rest of the construction leaving no discussion about capacitor quality.In the analog signal chain only the highest quality components are used as Ultra low distortion Burr-Brown op-amps in the input stage and Polypropylene capacitors in the output reconstruction filter.Finish: black.

Introducing the FRENCH AUDIO PENTACOST FLOORSTANDING DUAL 18 LOUDSPEAKER SYSTEM, a top-of-the-line sound system for your stage, auditorium audio needs. This rectangular-shaped speaker boasts a high-end feature that will surely elevate your listening experience. With dual massive 18 ceramic 1000 watts Subwoofers. Impedance of 4-8 ohms, each speaker is a double-chamber bass-reflect enclosure. This speaker system is perfect for very large rooms or auditorium. The system incorporates Dual 18 ceramic heavy cone subwoofers for dominating low frequencies. Also,4 8 Mid/Bass Speakers and 2 1.35 Titanium Horn Tweeters.. The FRENCH AUDIO PENTACOST SPEAKERS comes in a stunning Golden Oak Color. It has audio inputs of 110 INLET or use speaker wire.. This speaker is ideal for anyone who loves to listen to music with a full dynamic wall shaking bass response. Get yours today and enjoy the ultimate audio experience!Power Capacity 1000 WattsImpedance 4 OhmsSound Pressure Level 100db@1W/1M1.35 Titanium Dome Tweeter8 Polypropylene Mid/Bass RangeDual 18 Sub WoofersWeight 251 LBS Each SpeakerFrequency Response 25 to 20,000 Cycles Per Second.Dimension 75.5 X 20 X 24Port Color BlackChamber Composition 3/4 Oak Wood, 3/4 Oak Plywood, 3/4 Plywood, Pick - Ups are Welcome. AS - IS, No Warranty, No Refunds, on used products.

Introducing the FRENCH AUDIO SUB BELOW ZERO FLOORSTANDING DUAL 15 SPEAKER, a top-of-the-line sound system for your home audio needs. This rectangular-shaped speaker boasts a high-end feature that will surely elevate your listening experience. With a powerful RMS power of 360 and impedance of 4-8 ohms, each speaker is a multi-chamber bass-reflect enclosure. This speaker system is perfect for large rooms or auditorium.. The FRENCH AUDIO SUB BELOW ZERO FLOORSTANDING DUAL 15 SPEAKER comes in a stunning Golden Oak Color. It has audio inputs of 110 INLET or use speaker wire.. This speaker is ideal for anyone who loves to listen to music with a full and rich sound with dominating bass. Get yours today and enjoy the ultimate audio experience!Power Capacity 750 WattsImpedance 5 OhmsSound Pressure Level 100db@1W/1M1.35 Titanium Dome TweeterWeight 212Lbs Each SpeakerFrequency Response 25 to 20,000 Cycles Per Second.Dimension 65.5 X 20 X 23.5Port Colors Red, Blue, GreenChamber Composition 3/4 Oak Wood, 3/4 Oak Plywood, 3/4 Plywood, 1 1/2 White Wood, 1/2 PlexiglassMain Port Composition Steel, Inner PVC Pick - Ups are Welcome. AS - IS, No Warranty, No Refunds, on used products.

Good working condition. See pics

Lyngdorf SDA 2175 High-Performance Power Amplifier.Working, excellent sound.Has some scratches.Comes with power cord.MADE IN DENMARK.SpecificationsPower output: 200 watts per channel into 8? (stereo)Frequency response: 0.3Hz to 33kHzTotal harmonic distortion: 0.01%Signal to noise ratio: 117dBSpeaker load impedance: 4? to 8?Dimensions: 450 x 361 x 100.6mmWeight: 13kgDescriptionThe SDA 2175 is a high-performance power amplifier designed without compromise. It can act as a controllable amplifier in Lyngdorf systems or as a power amplifier for conventional pre-amplifiers.The SDA 2175 is not your regular class D power amplifier. The output stage uses Pulse Width Modulation with a patented switch speed optimization technology. This ensures a low and linear natural distortion, and an unmatchable performance is achieved by using less feedback compared to typical Class D amplifiers.And the fully balanced signal path all the way through the amplifier to the PWM conversion stage guarantees a remarkable performance with a signal-to-noise ratio superior to any other Class D amplifier in the market!Careful and sensitive design touches can be seen throughout the amplifier: it starts at the mains input with a low-noise Holmgren toroidal transformer with power supply feed-forward compensation, suppressing the variations in the output rather than relying on feedback-based error correction normally used. This feed-forward technique originates from the design of the Millennium – the Lyngdorf state-of-the-art true digital amplifier.In the critical output stage only the highest quality components have been used, e.g. polypropylene capacitors and linear ferrite material in the output filter. Combined with other techniques this results in low and frequency-independent distortion. Consequently wideband musical instruments can be re-played without any added harmonics – any source will be recreated to sound the way it was recorded.Semi Digital Amplifier“Semi Digital” is in Lyngdorf terms a “digital” switching amplifier driven by an analog input. In principle, the output stage of most switching amplifiers has the same working principle. PWM = Pulse Width Modulation is simply a matter of variable open/close time of the transistors.Fully balanced signal pathThe amplifier is fully balanced from input to output if driven with a balanced source, and if not driven with a balanced source, the signal is immediately transformed to a balanced signal.The fully balanced design gives clear advantages regarding hum and noise suppression – also from other sources. And the balanced design is not only used in the signal path – even the feedback loop internally in the output stage is designed to be fully balanced.The signal path is furthermore DC coupled to the widest extent – except from DC blocking capacitors in the input the construction is DC coupled through the rest of the construction leaving no discussion about capacitor quality.In the analog signal chain only the highest quality components are used as Ultra low distortion Burr-Brown op-amps in the input stage and Polypropylene capacitors in the output reconstruction filter.Finish: black.

The RMG Networks IVS SDA-909 is a excellent choice for those looking for a small and compact digital signage media streamer. Here are the key components and features:Processor: Intel Core i3 3217u, 1.80 GHzMemory: 4GB RAM (4096MB)Storage: 120GB HARD DRIVEColor: Sleek black designOperating System: Not includedIt is a good working Desktop. It does not come with a keyboard, mouse and power cable. It has some scuffs and scratches from normal wear and tear but is still in great condition

Elevate your audio experience with the Polk Audio SDA-1C, designed to deliver rich, high-fidelity sound that truly enhances your home entertainment system. These speakers feature a 2.0 channel system configuration with a powerful 500W RMS output, ensuring crisp and dynamic audio performance. With their sleek black wood construction, they also serve as a stylish addition to any room. The speakers are wired for connectivity, offering a stable and secure link to your audio source, and are compatible with Polk Audio devices. The rectangular shape of the units allows for easy placement and an expansive sound field. Experience the blend of Polk Audios legacy with modern design, making these speakers a perfect choice for audiophiles and casual listeners alike. Grout stage presents and would make great surround sound from pair. I have the matching center for sale s wellPRICE IS FOR THE PAIR. NEW LISTED AT $1450. ... LOCAL PICK UP IN SPRING,TXSpecs: for front wall speakers Drivers: 2 - 1 tweeter, 4 - 6.5 midrange, 1 - 12 sub-bass radiator Frequency Response: 15Hz - 26kHz Impudence: 6 Ohms Recommended Power: 50 - 500 watts per channel Efficiency: 90dB Dimensions: 44H x 16.563W x 11.5D Weight: 85 pounds each Year: 1987-90

Great shape . Maybe signs of minor dust on them .

Elevate your audio experience with the Polk Audio SDA-1C, designed to deliver rich, high-fidelity sound that truly enhances your home entertainment system. These speakers feature a 2.0 channel system configuration with a powerful 500W RMS output, ensuring crisp and dynamic audio performance. With their sleek black wood construction, they also serve as a stylish addition to any room. The speakers are wired for connectivity, offering a stable and secure link to your audio source, and are compatible with Polk Audio devices. The rectangular shape of the units allows for easy placement and an expansive sound field. Experience the blend of Polk Audios legacy with modern design, making these speakers a perfect choice for audiophiles and casual listeners alike. Grout stage presents and would make great surround sound from pair. I have the matching center for sale s wellPRICE IS FOR THE PAIR. NEW LISTED AT $14500LOCAL PICK UP IN SPRING,TXSpecs: for front wall speakers Drivers: 2 - 1 tweeter, 4 - 6.5 midrange, 1 - 12 sub-bass radiator Frequency Response: 15Hz - 26kHz Impudence: 6 Ohms Recommended Power: 50 - 500 watts per channel Efficiency: 90dB Dimensions: 44H x 16.563W x 11.5D Weight: 85 pounds each Year: 1987-90

The Vintage Polk Audio SDA 1 Floor Tower Speakers are a pair of American-made speakers known for their amazing sound quality. These speakers come in a set of two units and are from the Polk Audio brand. They are designed with the unique SDA (Stereo Dimensional Array) technology for an immersive listening experience. These speakers have been very well taken care of. Everything works as it should. They are very impressive. Located near Spokane WA, you are welcome to come pick them up or they will arrive shipped In separate crates to you for $ 200. They come as a pair, as shown, no cables or wires. They are in really nice condition but as any 40 plus year old pair of speakers there are some minor surface scratches but nothing close to Major.

Polk Audio SDA 2 Tower Speakers Stereo Dimensional Array Loudspeakers •Mid 1980s These are excellent sounding high end performing vintage speakers. I am the second owner of these, but it is time to downsize and pass them on to the next audio enthusiast. Aesthetically they are in amazing condition. Grills are free of snag, rips, and tears. The cabinets are pristine with no scratches, chips or dents. Please review all photos prior to purchase. I will also be more than happy to demo them. The videoclip does not do this justice. The SDA-2A was directly designed by Matthew Polk during the era when Polk was making true performance loudspeakers. The SDA technology involves combining two speaker systems in each cabinet of a mirror-image stereo pair. The inner one (nearest to the center of the room), called the stereo array, is a normal stereo speaker. The second system, known as the dimensional array, is located a few inches to the outside of the stereo array. Each dimensional array is driven by the stereo signal from the opposite speaker in the pair, and the frequency, phase, and amplitude characteristics of its output are modified so that when its sound reaches the ear of the listener, it cancels the sound arriving at that ear from the opposite speaker. The result, in the ideal case, is that each ear hears only the sound from its corresponding speaker, without the interaural crosstalk, and consequent spatial distortion, that would otherwise exist.The speakers have a unique sound characteristic and lets them present a huge soundstage. One reviewer stated the SDA 2As measured the flattest overall response of any speaker they ever tested.They are exceptionally well cared for and play loud and clear. The SDA cable is included. Loudspeaker Specifications:TYPE - 2.5- Way, Sealed with Passive radiatorTWEETER - 1 Silver coil domeMIDRANGE - 2X - 6.5: trilaminate cone driversWOOFERS - Passive 12 radiatorSENSITIVITY - 88 dB @ 1W @ 1m @ 1kIMPEDANCE - 4 OhmsCONNECTION - Single binding post / SDA cable portRECOMMENDED POWER - 25-150 wattsFREQUENCY RESPONSE - 30 Hz - 20kHzDIMENSIONS - 16 W x 12 D x 39.5HWEIGHT - 57 pounds each

POLK AUDIO SDA 1C SPEAKERS- MATTHEW POLK’S GENIUS AND CUTTING-EDGETECHNOLOGY WERE ON FULL DISPLAY WHEN HE CREATED THESE SPEAKERS. MAGNIFICENT!!THE SDA 1C (real wood)STEREO DIMENSIONAL ARRAY, set new standards for imaging and soundstage depth that has not been rivaled to this day. These speakers must beheard to be appreciated. Fantastic bass extension.This was Polk’s greatest (and mostexpensive- $1800) creation in 1989! The combination of power handling (500Watts) and efficiency Sensitivity (91dB) sets them apart from other audiophilespeakers!They are big andbeautiful! AND THE BEST SPEAKERS I HAVE EVER OWNED OR HEARD!The Polk Audio SDA 1 speakers havethe following specifications:· Dimensions: 44H x 16.563W x11.5D· Weight: 70-85 pounds each· Frequency response: 15Hz - 26kHz· Nominal impedance: 4-6 Ohms · Sensitivity: 90-91dB· Drivers: 2 - 1 tweeter, 4 -6.5 midrange, 1 - 12 sub-bass radiator· Recommended power: 10W to 500W

Great shape . Maybe signs of minor dust on them .

Elevate your audio experience with the Polk Audio SDA-1C, designed to deliver rich, high-fidelity sound that truly enhances your home entertainment system. These speakers feature a 2.0 channel system configuration with a powerful 500W RMS output, ensuring crisp and dynamic audio performance. With their sleek black wood construction, they also serve as a stylish addition to any room. The speakers are wired for connectivity, offering a stable and secure link to your audio source, and are compatible with Polk Audio devices. The rectangular shape of the units allows for easy placement and an expansive sound field. Experience the blend of Polk Audios legacy with modern design, making these speakers a perfect choice for audiophiles and casual listeners alike. Grout stage presents and would make great surround sound from pair. I have the matching center for sale s wellPRICE IS FOR THE PAIR. NEW LISTED AT $14500LOCAL PICK UP IN SPRING,TXSpecs: for front wall speakers Drivers: 2 - 1 tweeter, 4 - 6.5 midrange, 1 - 12 sub-bass radiator Frequency Response: 15Hz - 26kHz Impudence: 6 Ohms Recommended Power: 50 - 500 watts per channel Efficiency: 90dB Dimensions: 44H x 16.563W x 11.5D Weight: 85 pounds each Year: 1987-90

RMG Networks SDA-1010 Digital Signage Media Player i3-5010U 2.10 GHz 4GB Ram Description Included in this Sale: Qty 1 - RMG Networks SDA-1010 Digital Signage Media Player i3-5010U 2.10 GHz 4GB Ram All unit(s) are tested by our in-house tech team.All unit(s) are in good working condition unless otherwise noted.Please check all pictures for cosmetic condition.SALE INCLUDES ONLY ITEMS PICTURED. Serial Number-Recorded at Time of Purchase**This item comes exactly as pictured. If it is not in the picture, it does not come with the item unless stated in the description. Multiple units for sale you may not receive same as in picture.** ****** Not Finding what you need Please Feel Free to Browse one of our other stores*******wheelerdealerinc mr.itparts vtkphx Customer Support: This item purchased from ViaTeK Solutions has been tested for Key Functions by our in house Technical Team and is R2 Ready for Resale. Our Customer Support Team is available Monday thru Friday 8:30AM- 4:00PM EST . Please contact us with any questions through Ebay Messages and allow a 24 hour response time during weekdays only. Ebay asks that all communication be conducuted through Ebays messaging service. This is the fastest way to get a response. We are not always available by phone. Your satisfaction is very important to us. If you experience a problem of any kind with your purchase please contact us first before leaving any feedback or opening any claims. Issues will be resolved more efficiently if you contact us first and deal directly with us. We do stand behind our products and will do everything in our power to make sure that you feel satisfied with your purchase. Payment: All payments will be made through the Ebay payment system. Please contact Ebay with any questions you may have about submitting payment. All State and Local Sales Tax are collected by Ebay. If you have any questions about amounts or exemptions please contact Ebay. We are unable to waive tax charges for you. All payments must be received within 3 days of purchase or the transaction may be canceled. We will only ship to the address provided to us at checkout. !! NO EXCEPTIONS!! Shipping: We will ship your items within 1-2 business days from receipt of payment. Any purchases made on a Friday or Saturday will be shipped on Monday. All items will be shipped via UPS, US Postal Service. (Sorry, we do not use FedEx for any shipments) We only offer expedited shipping when shipped on the customers UPS or USPS account.(Sorry, we do not use FedEx for any shipments) We only ship to the 48 contiguous United States. (No Hawaii, Alaska, Puerto Rico or anywhere outside the United States) We do not ship directly to APO/FPO or Post Office Box addresses.You must provide a physical address. We do not ship to international addresses. Return Policy: Here at Viatek Solutions we understand that problems may arise with purchases therefore all items are guaranteed to work as described for 30 days. All items found not to be working as described must be returned within 30 days of receipt and upon verification of serial number a Refund or Replacement will be issued. Please be certain you can use what you are bidding on, as incompatibility is not a valid reason for return Thanks for looking! We are a Certified R2 Eco-Friendly e-recycling company. Powered by SixBits eCommerce Solution

Elevate your audio experience with the Polk Audio SDA-1C, designed to deliver rich, high-fidelity sound that truly enhances your home entertainment system. These speakers feature a 2.0 channel system configuration with a powerful 500W RMS output, ensuring crisp and dynamic audio performance. With their sleek black wood construction, they also serve as a stylish addition to any room. The speakers are wired for connectivity, offering a stable and secure link to your audio source, and are compatible with Polk Audio devices. The rectangular shape of the units allows for easy placement and an expansive sound field. Experience the blend of Polk Audios legacy with modern design, making these speakers a perfect choice for audiophiles and casual listeners alike. Grout stage presents and would make great surround sound from pair. I have the matching center for sale s wellPRICE IS FOR THE PAIR. NEW LISTED AT $14500LOCAL PICK UP IN SPRING,TXSpecs: for front wall speakers Drivers: 2 - 1 tweeter, 4 - 6.5 midrange, 1 - 12 sub-bass radiator Frequency Response: 15Hz - 26kHz Impudence: 6 Ohms Recommended Power: 50 - 500 watts per channel Efficiency: 90dB Dimensions: 44H x 16.563W x 11.5D Weight: 85 pounds each Year: 1987-90

Tauchen Sie ein in die Welt der hochwertigen Audioübertragung mit dem Skythe SDA-1100 Vorverstärker. Dieses Modell besticht durch seine präzise Verarbeitung und die renommierte Marke Skythe bürgt für exzellente Klangqualität. Der Vorverstärker ist gründlich geprüft und verspricht eine zuverlässige Performance, die Ihre akustischen Erlebnisse bereichern wird. Mit seiner eleganten Optik fügt er sich nahtlos in jedes Studio- oder Heimsetup ein und liefert Ergebnisse, die anspruchsvollen Audiophilen gerecht werden.

This is tested. I will drop the price on this until it sells. Thanks.

Working