ATC P1 Pro

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ATC P1 Pro stereo power amplifier
ATC P1 Pro front ATC P1 Pro side ATC P1 Pro back


ATC P1 Pro - The Ear (UK) review

ATC P1 Pro

ATC P1 Pro - The Ear (UK) review
  • I have long been a fan of ATC loudspeakers, both passive and active, they are more subservient to the whims of the music than most loudspeakers and can deliver genuinely wide dynamic range when adequately driven. When I reviewed the SCM19 standmounts earlier in the year I got to borrow a P1 power amplifier at the same time and got a fabulous result with the pairing, but then I carried on using the amp and found that it worked with a wide range of speakers.
  • The more I used the P1 the more I was impressed that an amplifier at its price could do such a good job. It has real grip in the low end for a start, a rare commodity at almost any price, and yet it doesn’t have the graininess of most high power transistor amps. It’s not as smooth as a class A, nor as nimble as a single ended triode but it has less character than either and lets you hear the full power and glory of everything you throw at it. It is also very competitively priced indeed. Jason Kennedy

ATC P1 Pro Features:

  • True dual-mono design delivers full power simultaneously from both channels, with minimal crosstalk
  • Grounded source class A/B circuit topology as found in ATC’s renowned active loudspeakers.
  • Ultra wide bandwidth, low distortion and high dynamic range ensure tonal accuracy and perfectly timed transients.
  • No compromise, high performance power supply and large heatsinks guarantee outstanding stability and long term reliability.
  • A perfect match for any passive studio reference monitor.
  • 19” Rack mountable convection cooled chassis
  • Hand built in the UK and supported by a 6 year warranty.


Output Power: 150W (8 Ω, 1kHz, continuous. avg., both channels driven)
Input Sensitivity: 2V RMS (ref. 150W out)
Input Impedance: 10kΩ/leg
Frequency Response: <2Hz – >400kHz (-3dB)
Signal to noise ratio: >115dB (IEC ‘A’)
Crosstalk: >100dB (10Hz – 20kHz)
THD: >0.002%/-95dB (8 Ω, 1kHz, -1dB below full Power)
Damping Factor: >400 (8 Ω)
Dimensions (HxWxD): 141.1 x 482.6 x 365.6 mm (3U tall with feet removed)
Weight: 20kg

ATC P1 Pro detail
ATC P1 Pro cut sheet
Cut sheet


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