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Sorry, the product ATC Loudspeakers P4 Monoblock is not available anymore on Studio Economik's website.

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The ATC P4 4-way 850W Monoblock Power Amplifier delivers massive amounts of power and a consistent top quality sound at home, in the studio or on the road.

The ATC P4, four-way system packs 850W of punch and precision. The ATC P4 monoblock is equiped with active crossovers and three fans to ensure that the amp stays cool at all times. The amplifiers incorporate the same gain reduction and loudspeaker protection circuits as used in the ATC active monitors. This ensures that even working at very high levels the amplifier is held back from clipping so improving the subjective performance and protecting the loudspeakers from damage.


  • 4-way mono block design
  • 850W Class A amplifier
  • Phase adjustment
  • Variable cut off frequency
  • Variable gain
  • Stero Inputs
  • Specifications

    Output Power (RMS) :
  • HF: 100 Watts into 6 ohms
  • MF: 200 Watts into 16 ohms
  • LF: 275 Watts x 2 into 8 ohms
  • Input Sensitivity :
  • 1V
  • Input Impedance :
  • 10k ohms
  • Amplitude Response :
  • 5Hz - 20KHz ±0.1dB
  • Signal / Noise Ratio :
  • Better than 105dB
  • Crosstalk :
  • Better than 90dB
  • Power Requirements :
  • Voltage: 110, 115, 230
  • Frequency: 50/60Hz
  • (region dependent, factory set)
  • Overload Protection :
  • Active FET Momentary Gain Reduction
  • Dimensions : 19" Rack Mountable 5U high (220mm / 8.7")
    Overall Depth : 545mm (21.4")
    Front Panel & Handles : 75mm (3")
    Rear Handles : 40mm (1.6")
    Amplifier Body : 430mm (16.9")
    Weight: 40kg approx.
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