The Pioneer SX-737 is a beloved classic from the golden age of hi-fi, produced between 1974 and 1976. It sits comfortably in the mid-tier of Pioneer’s SX lineup, offering a sweet spot of performance, aesthetics, and reliability that still resonates with vintage audio enthusiasts like you.
?? Specs Overview
• Power Output: 35 watts per channel (RMS) into 8 ohms, 20Hz–20kHz, =0.5% THD
• Frequency Response: 15Hz to 40kHz
• Damping Factor: 40 at 8 ohms
• Signal-to-Noise Ratio:
• Mic: 65dB
• Phono (MM): 70dB
• Line: 95dB
• Input Sensitivity:
• Mic & Phono: 2.5mV
• Line & DIN: 150mV
• Speaker Load Impedance: Minimum 4 ohms
• Dimensions: 500 x 158 x 410 mm
• Weight: 13.2 kg
Key Features
• FM Front End: 4-gang variable capacitor with dual-gate MOSFET for excellent sensitivity and selectivity
• PLL Multiplex Demodulator: Enhances FM stereo stability and separation
• Recording Selector: Lets you record from one source while listening to another—rare for the era
• Dual Tape Deck Support: With monitoring and tape-to-tape dubbing
• Inputs: Phono, AUX, Mic, FM/AM tuner, Tape 1 & 2
• Design: Brushed aluminum faceplate, wood cabinet, blue dial lights with red/green indicators—pure '70s charm
??? Era & Legacy
The SX-737 was part of Pioneer’s push into the consumer hi-fi boom of the mid-1970s, alongside models like the SX-636 and SX-838. It retailed for around $300 at the time, and while not rare, it’s highly sought after for its balance of sound quality, build, and visual appeal. Many units still perform well today with minor restoration—though output transistors and electrolytic caps may need attention