Technics SA-400 Stereo Receiver 45WPC, Made in Japan

Technics SA-400 Stereo Receiver 45WPC, Made in Japan

The Technics SA-400 is a late-1970s Japanese-made FM/AM stereo receiver rated at 45 watts per channel into 8 ohms, combining classic silver-face styling with clean, low-distortion power and an excellent tuner section.

Offered from around 1978–1979, the SA-400 sits in the sweet spot of Technics’ lineup, powerful enough to drive a wide range of vintage and modern speakers while remaining compact and easy to place. This unit has undergone our Level One service and testing which should ensure many more years of reliable performance ahead, and presents in very good cosmetic condition with only light wear consistent with careful use. The brushed aluminum faceplate, matching knobs, and classic dial with signal and center-tune meters give it a timeless look that pairs well with both period-correct and contemporary systems.

Technically, the SA-400 delivers 45 watts per channel (minimum RMS, both channels driven, 8 ohms, 20–20,000 Hz) with only 0.04% total harmonic distortion, thanks to a pure-complementary OCL power amp and robust power supply. The tuner section uses a MOS FET front end, 3-gang FM tuning capacitor, and multi-stage IF with flat group delay ceramic filters, giving strong sensitivity and selectivity for FM listening. Inputs include phono (MM), AUX/line, and two tape monitor loops, making it easy to integrate a turntable, streamer, CD player, and tape deck or external processor; the dual tape loops can also be used for adding a graphic equalizer or other outboard signal processors.

Sonically, the SA-400 is known for a clean, slightly warm presentation with good bass control and smooth highs, making it a strong match for classic bookshelf and floorstanding speakers from the same era. High and low filters, loudness contour, and well-voiced bass and treble controls allow useful tailoring of the sound without veering into harshness or muddiness. Speaker outputs support two pairs (A/B) with a 4–16 ohm load range, so it can comfortably run a single main pair or switch between two rooms of speakers.

FM/AM stereo receiver, late-1970s production (approx. 1978–1979)

Made in Japan

Power output: 45 watts per channel into 8 ohms (20–20,000 Hz, both channels, 0.04% THD)

Frequency response: 10 Hz–40 kHz

Total harmonic distortion: 0.04%

Damping factor: 32

Phono (MM) input sensitivity: 2.5 mV; line inputs approx. 150 mV

Signal-to-noise ratio: 78 dB (phono), 95 dB (line)

Speaker load impedance: 4–16 ohms; A/B speaker switching

Tuner: MOS FET FM front end, 3-gang tuning cap, multi-stage IF, zero-center and signal-strength meters

Bass, treble, loudness, high and low filters, dual tape monitor loops

Inputs: phono (MM), AUX, two tape loops

No digital inputs or outputs (analog-era design)

Very good cosmetic condition; Level One serviced and tested

Dimensions (Width x Height x Depth): 16.9 x 5.6 x 11.8 inches (430 x 142 x 300 mm)

Weight: 19 lbs (8.2 kg)

This Japanese-made Technics SA-400 offers a very attractive mix of classic styling, genuinely useful 45WPC output, and a strong analog tuner and phono stage, making it an excellent centerpiece for a vintage two-channel system. With its Level One service and testing, very good cosmetics, and versatile input complement, it is an appealing choice for listeners who want reliable late-1970s Technics performance without stepping all the way up into big-flagship pricing.

Backed by Radique Audio’s 90-day Bumper to Bumper Warranty and our Perpetual Trade-Back Policy, you can purchase with confidence; asking $495.