Selling a vintage 1970s Sony SQR-8750 4 Channel Quad Receiver in its original found working condition. Estate Find. The estate was filled with high quality electronics and unique collectibles.I tested the receiver and picked up FM stations using a wire antenna. There is static when adjusting the volume and the pots need to be cleaned with electrical cleaner. The wood top and sides are in great condition with minimal marks or scratches. The knobs, switches and meters appear to function properly. What you see in the pictures is exactly what you will receive. I did not clean or polish and will clean up nicely, if desired. Check my listings for many unique hard to find collectibles.SpecificationsThe Sony SQR-8750 was Sony’s largest SQ-compatible receiver, produced between 1974 and 1976. Here are some key specifications for this quadraphonic receiver:Power Output:Stereo Mode: 30W RMS per channelQuadraphonic Mode: 80W RMS (two-channel mode)Frequency Response: 20Hz to 20kHzTotal Harmonic Distortion: 0.02%Semiconductors: 9 x IC, 4 x FET, 39 x transistors, 36 x diodesColor: Front silver with a wooden housingOriginal Price (approx.): $700 USDDespite its impressive features, the SQR-8750 faced challenges due to the complexity of multichannel setups during that era. The public’s preference shifted away from multichannel until the mid-1980s, but nowadays, multichannel audio is making a comeback! Shipping Terms: Insurance and a tracking number will be provided. Free Local Pickup. The receiver is very heavy and will be safely packed for shipping. Contact me with any questions or comments. Seller Terms: Buyer must contact seller within 2 days and payment should be received otherwise the seller may either sell or relist the item. Any payment not received within 3 days of the end of the auction may result in the notification to Ebay under their non-paying bidder policy.

Comes as seenPowers on - missing some of the speaker jacks on the backand one panel of jacks is not original and modifiedit does work when plugged into those jackstunes into AM and FM channelsno other test donewill need to be serviced and jacks repaired or replacedmay need some other workmissing 1 knobsold AS-IS, no returnssee pictures for condition

Comes as seenPowers on - missing some of the speaker jacks on the backand one panel of jacks is not original and modifiedit does work when plugged into those jackstunes into AM and FM channelsno other test donewill need to be serviced and jacks repaired or replacedmay need some other workmissing 1 knobsold AS-IS, no returnssee pictures for condition

This item POWERS UP, SOLD AS IS, NOT TESTED AND NO RETURNS. This Sony SQR-8750 4 Channel Receiver is the perfect addition to your home audio system. It offers powerful sound and reliable performance, making it a great choice for any music lover. The brand is Sony and the model number is SQR-8750. With this receiver, you can enjoy your favorite tunes in high quality. Its perfect for TV, video, and home audio. Its a great choice for anyone who wants to upgrade their audio system. Its easy to use and comes with a range of features. Youll love the sound quality and the overall experience.

Beautiful SQR-8750 Sony 4 Channel Receiver Tested Works, in Pristine Condition, cover is in great condition , Front Glass is in great condition, there are 2 scratches on the top on the chrome trim, Receiver is very clean, comes from a non-smoking or pet home with Original box without Original packing material, However Item will be very well pack with foam and double boxed , all signal strength meter are in working condition, all lights are also in working condition, Works Great Item is in great condition, come as pictures, please zoom-in pictures for details and please ask any question before bidding, Shipping: Items will be ship within 2 business days of receiving payments and items will be ship with tracking number, You will Received a Tracking Number after shipping label it is made. Items will be ship Thru USPS, FedEx or UPS Ground, please see shipping details Feedbacks We always leave Positive Feedback with-in 24 hours of Receiving Feedback from buyers, it let us know that buyer is satisfied with the item and We consider this transaction completed We Appreciated your Business Thank you

This Sony SQR-8750 stereo receiver offers a beautiful woodgrain color and supports both FM and AM modes. With 4 channels and 8 audio outputs, it delivers high-quality sound through stereo RCA connections and a headphone jack. The receiver combo features include a radio tuner, and the surround sound formats include QS, R-Matrix, Discrete, and SQ. The Sony SQR-8750 is a top-of-the-line stereo receiver that provides analog audio inputs and precise tuning capabilities. It is perfect for home audio enthusiasts who want the best sound quality from their music. This receiver has been designed to offer exceptional performance and reliability, making it a great addition to any home audio setup. $69.95 S/H U.S.A. Insured great condition---local estate find---tested, all works good ---Big and Heavy! All dial lights are working good ---may show normal wear ---see all pictures and ask any questions---SEE MY OTHER GREAT AUCTIONS We will not ship to unconfirmed addresses. (Absolutely NO post office boxes) If item(s) is not paid for within 3 days seller will cancel order. Sold As Is, No Returns, No Refunds unless your item arrives damaged, not as described or faulty: if there are issues you contact us within 3 days of delivery confirmation.

See Video for functionality, Be sure to look closely at the pictures because what you see, is what you get..Very nice receiver, almost in mint condition for a 49 years old Everything is working fine, all lights have been changed to LEDs. I would keep it but I am currently using a customized Sansui QRX 6001 as a preamp, and a Dynaco QSR 300 4 channel amp. The Sony FM tuner IMHO is the clearest and cleanest I have ever listened to among analog receivers. Very nice Phono section. It was tested by my tech @ 82 WPC X 2 and 41 WPC X 4 before clipping. This is a very heavy receiver, close to 43 lbs and 22 wide. TUNER SECTION Tuner FM Sensitivity :1,9µV (IHF)S/N ratio :70dBCapture ratio :1,2dBSelectivity :75dB (IHF)Image rejection :70dBIF rejection :100dBSpurious rejection :90dBAM suppression :54dBTHD :0,2% (400Hz, mono)0,5% (400Hz, stereo)FM separation :40dB (400Hz)FM frequency response :40Hz...15Khz (+0,5 / -1dB)AM THD :0,5%AM S/N ratio :50dBPREAMP SECTIONPreamp Inputs :Phono (5mV / 50kOhm)Phono low (2,5mV / 50kOhm)Microphone (1,5mV / 50kOhm)Tuner, Aux, Tape, DIN (250mV / 50kOhm)Outputs :rec-out (250mV / 10kOhm)DIN (30mV / 82kOhm)S/N ratio :72dB (phono)65dB (MIC)90dB (line)High filter :8Khz (6dB/oct.)Low filter :80Hz (6dB/oct.)Bass control :± 10dB at 100HzTreble control :± 10dB at 10KhzLoudness switch :+ 10dB at 50Hz / + 4dB at 10Khz (att. -30dB)SQ SectionTHD :0,2% (250mV input ; 2Khz)Frequency response :20Hz...20Khz (±3dB)S/N ratio :80dB (250mV input, IHF-A)MAIN SECTIONAmplifierRMS power :2x 80W (2 channels driven, 20Hz...20Khz, 8 Ohm)4x 30W (4 channels driven, 20Hz...20Khz, 8 Ohm)2x 280W (2 channel, peak, 4 Ohm)2x 216W (2 channel, peak, 8 Ohm)THD :0,5% at rated power (2 channel)0,2% at rated power (4 channel)IM :0,5% at rated power (2 channel)0,2% at rated power (4 channel)Bandwidth :15Hz...40Khz (IHF)Frequency response :10Hz...50Khz (1W output, +0/-2dB)S/N ratio :??Damping factor :25 (8 Ohm)GENERAL Dimensions :52 x 18,9 x 37cmWeight :18,3kg.List price :$800.00(1975) FEATURESFull-logic decoding of SQ sources Decoding of other 4-Channel matrix systems Enhancement of existing stereo programs Phase-Locked Loop IC for FM decoding MOS-FET FM front end Solid State IF filters IC IF stageCompletely shielded FM front end Pinpoint tune signal strength/multipath meter DC power amp system Provisions for 2 phono sources Provisions for 3 tape recorders (2x 2CH and 1x 4CH)Outputs for 2 sets of 4CH speakers4 VU meters and meter sensitivity switch, Individual level controls for each channel Master level control, Separate Bass & Treble controls for front & rear channels, Microphone mixing control, Loudness compensation, Low & High filters, FM interstation muting, Headphone jacks for 2 and 4CH use, Wooden cabinet included Courtesy of the Vintage KnobSelling as is with NO Returns, The Stereo will be packed well, the package will be insured. This is almost 50 years old and everything is working as it is supposed to, but there is no guarantee implied. I take my ebay seller feedback seriously and it is 100%. If I didnt sell items as described and pack shipments well, I would not have the 100% Rating. Message me with any specific questions.On Oct-11-23 at 18:17:35 PDT, seller added the following information: I copied a prior listing and DO NOT have the Box.  Im sorry for the mistake..On Oct-12-23 at 08:38:59 PDT, seller added the following information: The listing is locked but upon request I can message you a copy of the service receipt.  I am unable to post up a picture.

I fully tested each phone, tape and aux input and all are working accordingly. This is a beautiful receiver that came to me in the original box. It has one small mark on the top at the back edge. (I took a close up of it in one of the pictures)Compared to a smaller Technics from back in the day, this SONY sounds amazing. No comparison. I like that theres separate Bass and Treble for the front and rear speakers. As far as I can tell, this is almost in Mint Condition, other than the one mark on the top I mentioned earlier. It All knobs and buttons work accordingly. I didnt hear any crackling from the individual or master volume controls, and very very minimal only the first time I used the Bass and Treble knobs. After that, no crackling what so ever.All lights and meters worked accordingly as well. The FM tuner IMHO is the clearest and cleanest I have ever listened to among analog receivers. Was pulling in stations without any wire installed into the antenna. Very nice Phono section. It gives 80 watts RMS X 2 and 30 watts RMS X4. This is a very heavy receiver, close to 43 lbs and 22 wide. TUNER SECTIONFM Sensitivity :1,9µV (IHF)S/N ratio :70dBCapture ratio :1,2dBSelectivity :75dB (IHF)Image rejection :70dBIF rejection :100dBSpurious rejection :90dBAM suppression :54dBTHD :0,2% (400Hz, mono)0,5% (400Hz, stereo)FM separation :40dB (400Hz)FM frequency response :40Hz...15Khz (+0,5 / -1dB)AM THD :0,5%AM S/N ratio :50dB PREAMP SECTION Preamp Inputs :Phono (5mV / 50kOhm)Phono low (2,5mV / 50kOhm)Microphone (1,5mV / 50kOhm)Tuner, Aux, Tape, DIN (250mV / 50kOhm)Outputs :rec-out (250mV / 10kOhm)DIN (30mV / 82kOhm)S/N ratio :72dB (phono)65dB (MIC)90dB (line)High filter :8Khz (6dB/oct.)Low filter :80Hz (6dB/oct.)Bass control :± 10dB at 100HzTreble control :± 10dB at 10KhzLoudness switch :+ 10dB at 50Hz / + 4dB at 10Khz (att. -30dB)SQ SectionTHD :0,2% (250mV input ; 2Khz)Frequency response :20Hz...20Khz (±3dB)S/N ratio :80dB (250mV input, IHF-A) MAIN SECTION AmplifierRMS power :2x 80W (2 channels driven, 20Hz...20Khz, 8 Ohm)4x 30W (4 channels driven, 20Hz...20Khz, 8 Ohm)2x 280W (2 channel, peak, 4 Ohm)2x 216W (2 channel, peak, 8 Ohm)THD :0,5% at rated power (2 channel) 0,2% at rated power (4 channel)IM :0,5% at rated power (2 channel)0,2% at rated power (4 channel)Bandwidth :15Hz...40Khz (IHF)Frequency response :10Hz...50Khz (1W output, +0/-2dB)S/N ratio :??Damping factor :25 (8 Ohm) GENERAL Dimensions : 52 x 18,9 x 37cmWeight :18,3kg.List price :$800.00(1975)Optional accessory :RU-40 4CH wired remote-control FEATURESFull-logic decoding of SQ sourcesDecoding of other 4-Channel matrix systemsEnhancement of existing stereo programsPhase-Locked Loop IC for FM decodingMOS-FET FM front endSolid State IF filtersIC IF stageCompletely shielded FM front endPinpoint tune signal strength/multipath meterDC power amp systemProvisions for 2 phono sourcesProvisions for 3 tape recorders (2x 2CH and 1x 4CH)Outputs for 2 sets of 4CH speakers4 VU meters and meter sensitivity switchIndividual level controls for each channelMaster level controlSeparate Bass & Treble controls for front & rear channelsMicrophone mixing controlLoudness compensationLow & High filtersFM interstation mutingHeadphone jacks for 2 and 4CH useWooden cabinet included ***Info Courtesy of the Vintage Knob***