Chorlton Analogue

Pioneer A-400 Stereo Integrated Amplifier MM/MC Phono Stage 70W

Regular price £224.99
Pioneer A-400 integrated amplifier finished in black. 70W RMS into 8ohms. Good cosmetic condition and in good working order. MM and MC phono stage input for turntables.We pack with great care to ensure safe transit and take responsibility for getting the item to you safely.

We pack with great care to ensure safe transit and take responsibility for getting the item to you safely.

The Pioneer A-400 is a stereo integrated amplifier introduced in 1990, renowned for its minimalist design and high-fidelity performance. Below are its key specifications:

Power Output:

  • 50 watts per channel into 8 ohms (20 Hz to 20 kHz, 0.03% THD)
  • 70 watts per channel into 4 ohms (20 Hz to 20 kHz, 0.05% THD)

Frequency Response:

  • 5 Hz to 100 kHz (+0 dB, -3 dB)

Total Harmonic Distortion (THD):

  • 0.03% at 50 watts into 8 ohms (20 Hz to 20 kHz)
  • 0.05% at 70 watts into 4 ohms (20 Hz to 20 kHz)

Input Sensitivity/Impedance:

  • Phono MM: 2.5 mV / 50 kΩ
  • Phono MC: 0.2 mV / 100 kΩ
  • Line (CD, Tuner, Aux, Tape): 150 mV / 50 kΩ

Signal-to-Noise Ratio (SNR):

  • Phono MM: 87 dB
  • Phono MC: 69 dB
  • Line: 108 dB

Dynamic Power Output:

  • 8 ohms: 70 watts
  • 4 ohms: 100 watts
  • 2 ohms: 135 watts

Damping Factor:

  • 130 (20 Hz to 20 kHz)

Dimensions and Weight:

  • 420 mm (W) x 126 mm (H) x 352 mm (D)
  • 8 kg



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