1976-77 Pioneer SX-750 Stereo Receiver 50 WPC at 8 Ohms, 60 WPC at 4 Ohms (RMS). LOCAL SALE ONLY - DALAUDIO LLC has serviced this unit, all caps were checked with Curve Tracer (Huntron Tracker) and ESR anything off spec was changed. All functions have been tested and are operational. Each Switch, Selector, and Potentiometer was cleaned and tested. The wood cabinet has been stripped and recovered. We even saved the silver side warning label! All bulbs are the original type, not LED. Meters are fully functional. Antenna is not broken. The FM section was aligned, AM was checked. Each input including the phono stage was tested. This unit is ready to go. Please see all photos of the condition. They should speak for themselves. We are including the Original Manual, Schematic, and Brochure. If you want a digital copy of the service manual, bring a thumb drive.
 
Cash Sale No Holds Call or Text for review and pick-up. If you want to hear the unit, ;let me know. Price is firm. No trades.
 
More about the unit: The unit performance is excellent, huge soundstage, with extended tonal control. This is an excellent vintage example of the 1970s Pioneer power that so many companies tried to duplicate to compete.The SX750 was the in the upper class for mid range power. Most sold at or near its reasonable list price price of $399.95. It was offered in 1976-77 during the "silver face" receiver era, boasting 50 WPC with .01% distortion, a fact which is repeated no less than 5 times in the original Pioneer SX 750 brochure! The FM tuner section utilizes a dual gate MOS type FET and a 4 gang variable capacitor with a phase locked loop for Stereo stability and tonal over the air FM performance. If you are looking for a SX Series Receiver,-you should check this one out.
 
- The SX 750 was one of the first receivers to utilize oversize (15000 uf) capacitors in the power supply section for extended range.
 
- The amp section is Class AB OCL (output capacitor-less amplifier) or direct-coupled capacitorless output utilizing complementary push pull pairs of matched transistors. In this design the large caps only serve to filter power the Amp, not filter the actual output of the amp.
 
- The input/output RCAs, Speaker Terminals, and convenience AC outlets are mounted parallel to the base, for easy access.
 
- The gain stages/pre-amp/ tuner section are laid out on one large circuit board with unshielded input cables, resulting in better overall tonal quality.
 
Published Specifications
Tuning range: FM, MW
Power output: 50 watts per channel into 8Ω (stereo)
Frequency response: 10Hz to 50kHz
Total harmonic distortion: 0.1%
Damping factor: 30
Input sensitivity: 5mV (mic), 2.5mV (MM), 150mV (DIN), 150mV (line)
Signal to noise ratio: 70dB (MM), 90dB (line)
Output: 150mV (line), 30mV (DIN)
Speaker load impedance: 4Ω (minimum)
Semiconductors: 1 x FET, 7 x IC, 42 x transistors, 40 x diodes
Dimensions: 480 x 149 x 371mm
Weight: 13.7kg
Accessories: FM T-type antenna
 
Inputs and Outputs
Two tape in/outputs RCA
Phono input RCA
Aux RCA
Mic inputs 1/4" front panel
Headphone 1/4" front Panel
 
Front Panel Controls
Duplicate switch
Tone and high filter switches
FM muting
Tuning and signal meters
Separate bass/treble/balance controls
Loudness contour
Stereo/Mono
Speaker Off, A, B, and A+B Selector