Pioneer SA-400 Stereo Integrated Amplifier (1966–1967) Step into the golden age of hi-fi with the Pioneer SA-400 — a beautifully engineered vintage valve integrated amplifier that captures the unmistakable warmth and musicality of classic tube sound. Produced in the mid-1960s, this rare piece represents Pioneer’s early mastery of high-fidelity audio design, blending elegant aesthetics with rich, engaging sonic performance. Delivering a smooth and dynamic presentation, the SA-400 is ideal for vinyl enthusiasts and collectors seeking authentic tube tonality. Its refined circuitry, featuring classic 12AX7 and 6BM8 valves, produces a lush midrange, detailed highs, and a surprisingly authoritative low end for its power class. Encased in a compact yet solid chassis with a timeless brushed-metal faceplate, it’s as visually appealing as it is sonically rewarding. Whether as the centerpiece of a vintage system or a collector’s showpiece, the Pioneer SA-400 remains a highly desirable amplifier that embodies the spirit of 1960s hi-fi craftsmanship. Specifications Year of Manufacture 1966 Power output: 11 watts per channel (8Ω Frequency response: 30 Hz – 20 kHz Total harmonic distortion: 1% Damping factor: 13 Signal-to-noise ratio: 60 dB (phono) 80 dB (line) Input sensitivity: 2.3 mV (MM) 38 mV (ceramic) 150 mV (line) Valve complement: 12AX7, 6BM8 Speaker impedance: 8Ω – 16Ω Dimensions: 352 × 260 × 135 mm Weight: approx 9 kg. Please note the following, the item is over 60 years old, please do not expect a new amplifier. These vintage units are treasured because they have survived not because they have been over renovated and have lost the special magic tbey provide. Please see the detailed photographs provided as they form part of the description and sale please note the power cable has been extended with silver solder. Seen clearly in the photographs. Vintage electronic items are not guaranteed and the risk of the shipping is on the buyer. Please note the following we will pack her with our custom double box and bubble wrap system and we pack for the safety of the item not for economy.