The A-400X is often praised for its warm, smooth, and almost velvet-like sound, reminiscent of some older amplifiers.

What helps make the A-400X special is the deletion of all Tone controls and associated circuits. Theres no Bass, Treble, Balance or Tone Defeat circuitry to "muddy" the sound.

Good imaging and depth: It can deliver precise imaging and even good depth, which is a challenging feat for budget amplifiers.

Precise highs and convincing mids: The amplifier is capable of delivering clear and detailed highs and mids, particularly when paired with the right speakers.

MM/MC phono stage: It includes a built-in high quality phono stage that can handle both Moving Magnet (MM) and Moving Coil (MC) cartridges, making it suitable for vinyl enthusiasts.

Tested and cleaned, its in great overall cosmetic and working condition.

Pioneer A-400X Stereo Integrated Amplifier (1998)

(5 reviews)

Specifications:

Power output: 50 watts per channel into 8 ohms (stereo)

Frequency response: 1Hz to 300kHz

Total harmonic distortion: 0.02%

Input sensitivity: 0.24mV (MC), 2.8mV (MM), 200mV (line)

Signal to noise ratio: 67dB (MC), 86dB (MM), 110dB (line)

Output: 200mV (line)

Dimensions: 420 x 352 x 126mm

Weight: 7.9kg

Accessories: power cord

Year: 1995

Price: GBP £300 (1995)