The Pioneer A400 Amplifier is capable of fantastic sound-quality.

Once upgraded you get a smooth sounding amp, with terrific levels of detail. Bass punch & dynamics are improved dramatically too. The re-worked mains cabling opens the sound up further, resulting a more realistic, cleaner midrange and treble.

The Stage 3 Upgrade builds on the Stage 2 upgrade by adding in an active audio buffer to the signal path. This active buffer "drives" the volume pot, and dramatically reduces the load on your source(s) output stage.

PIONEER A400 UPGRADE - STAGE 3

• Red Hill Audio Mini-Pre Active Preamp Modules Fitted
• Mini Pre Modules upgraded to 'HA' Version
• 2 x Red Hill Audio "Clarity-R" Voltage Regulators for Preamp Stage
• Power supply capacitors are improved to the superb F&T or Mundorf
• Signal path capacitors are replaced with lower-distortion film types.
• IEC Mains Socket Fitted
• Mains wiring replaced with Red Hill Audio Clarity Mains
• Elna Cerafine audio-grade electrolytic PSU decoupling capacitors
• Additional Panasonic PPS decoupling capacitors improves bass impact and gives a more open and airy treble
• Additional Elna Cerafine and Panasonic PPS capacitors in critical areas allows the amp to respond to dynamic changes in the music with ease