ATC P4 4 channel monobloc power amplifier

ATC P4 4 channel monobloc power amplifier

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



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 :
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.


Providing your item is in stock, the order is usually dispatched within 24 hours. Please remember that postage and packing is completely free for orders over £50*. Out of stock items will be dispatched as soon as they become available, out of stock items can take between 4 to 21 days for dispatch.

Deliveries usually take 1-3 working days. The majority of orders are sent via our couriers'; Interlink Express on a next-day-delivery service. Smaller, low value or light-weight items are normally posted using Royal Mail Recorded or Royal Mail Special Delivery.

Once your product has been dispatched, you will be notified via email and sent a unique consignment number, you can use this number at to check the status of your delivery. If you have provided a mobile telephone number, Interlink's Predict service will notify you by text (and email) of a one-hour delivery window. If the window they suggest is inconvenient, you can change the date of delivery to a later one via text or email.

*We ship free of charge to mainland UK addresses, excluding the Scottish Highlands or 'Out-Of-Reach' Scottish locations. Please consult the post-codes below to see if your location falls within this category. If you are still unsure, please contact us on 01432 354921. We also ship to Northern Ireland, Channel Islands, Scilly Isles, Scottish Isles and Scottish Highlands, however delivery to these locations will incur a charge and can only be sent via a 2-day service.

Shipping CostsMainland UK (Next-Day)Offshore/Out-of-reach (2-day)Northern Ireland, Channel Islands, Isle of Man, Scottish Islands, Scilly IslandsRepublic of Ireland (2-day)
Under £50 Orders £7.50 £12.50 £15.00
Over £50 Orders FREE £19.99 £29.99
Surcharge Orders £50.00 £69.99 £79.99
Saturday Delivery £12.99 N/A N/A
Sunday Delivery £12.99 N/A N/A
Saturday by 12 Delivery £35 N/A N/A


Post codes exempt from the free delivery service include:

Scottish Highlands Post Codes: AB30-38, AB41-42, AB44-56, FK17-99, G83, IV1-28, IV30-39, IV52-54, IV63, KW1-14, PA21-33, PA34-40, PH15-26, PH31-41, PH49-50
Islands Post Codes: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA41-49, PA60-78, PH42-44, ZE1-3
Northern Ireland: All BT postcodes
Channel Islands Post Codes: JE, GY
Scilly Isles Post Codes: TR21, TR22, TR23, TR24, TR25

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