Sansui AU-3900 Integrated Amplifier

Classic piece of 1970s Japanese audio engineering—the Sansui AU-3900 Integrated Amplifier. Well-known among audiophiles for its warm, natural, and rich sonic signature, this vintage solid-state amplifier is perfect for anyone looking to build or enhance a classic analog hifi system.

The unit has been fully tested and is in working condition. All knobs, switches, and core functions operate as intended.

• Power Output: 22 to 25 Watts per channel into 8Ω (plenty of power for clean playback on small to medium setups).
• Tone Controls: Built-in click-stop Bass and Treble settings, Balance adjustment, and Loudness switch.
• Phono Stage: Built-in high-quality Phono input—ready to plug your turntable directly into the amp without needing an external preamp.
• Versatile Connectivity: Inputs for Phono, Tuner, Aux, and Tape Monitor.
• Outputs: Supports up to two sets of speakers (System A / System B), front 6.3mm headphone jack, and an integrated Microphone Mixing level control.

• Year of Manufacture: ~1976–1977 (Made in Japan)
• Total Harmonic Distortion (THD): 0.15%
• Frequency Response: 10Hz to 40kHz
• Dimensions: 400mm x 120mm x 240mm
• Weight: Approx. 5.5 kg

Cosmetically, the unit is in good vintage shape with normal, minor surface wear from age (please refer to photos). Faceplate text is crisp, and the original machined aluminum knobs are clean.

I am not interested in swaps or trades. This is located in Cork, but as I live in Dublin a sale in Dublin can be arranged with notice. Thanks.