Free UK DeliveryFinance at checkout30 Day ReturnsWorldwide DeliveryAudio Affair Facebook

Double Loyalty Points


Arcam FMJ P429 Four Channel Power Amplifier - Factory Return


. 0 Reviews . Write a Review

Found it cheaper? Click here. SKU: ACMP429FR
Ex VAT: £1,065.83

RRP: £1,599.00


SAVE 20% on this excellent power amplifier which can be used to biamp your speakers, or as part of a home cinema setup with separate two channel power amp and AV processor.

Available - Ships within 2-3 days.

Condition: Brand new in original retail packaging

Earn 2558 loyalty points when you order this item.

Where did you Find It Cheaper?

Seen this item cheaper elsewhere? Send us the link below with your details and we'll come back to you ASAP with a better price if we can offer one!


Warranty length 2 years standard (5 years on registration)
Brand Arcam

Tech Specs

Stereo/Dual Mono
- 4-chan (20Hz–kHz): 4/8Ω, 125 / 90W
- 1-chan (1kHz): 4/8Ω, 180 / 110W
- Sensitivity 100W: 8Ω, 0.8V (variable 7V)
- SNR: (Awtd) ref 100W / 8Ω, 112dB


Bridged Mode
- 2-chan (20Hz–kHz): 8Ω, 270W
- 1-chan (1kHz): 8Ω, 320W
- THD: 8Ω at 1kHz 0.002%
- Sensitivity 300W: 8Ω, 0.6V (variable 5V)
- SNR: (Awtd) ref 100W / 8Ω, 110dB
- Input impedance 10kΩ
- Freq response: 20Hz–20kHz (±0.05dB)


- Supplied Accessories: Mains lead
- Mains: 110-120V/220-240V (50-60Hz)
- Maximum Power Consumption: 1kW
- Dimensions (WDH): 433 x 425 x 105mm
- Weight: 14.4kg (net)

Product Description

SAVE 20% on the Arcam FMJ P429 four channel power amplifier, an excellent choice for hi-fi or home cinema systems. These units were returned to Arcam by another dealer that went out of business and may have slight marks from previously being on display, but has been fully checked over and reboxed by Arcam and is supported by a full 2 year warranty. In addition, if you change your mind you can return it to us within 30 days on our money back guarantee.


Smart and efficient, Arcam P429 is designed for multiple applications and employs new class G amplifier topology. Sound distortion is measured at below 0.000001 with normal usage meaning power is delivered with control and finesse.


Arcam has extensive experience in designing amplifiers which is exploited by the P429. The AV power amp uses only top components to provide many years of reliable musical enjoyment.

Equipped with a contemporary class G amplifier, toroidal transformer power supply, dampened chassis and performance-matched extraordinarily low distortion and noise transistor output stages, P429 effortlessly reproduces detailed music free from unwanted artefacts just as the artist intended.

Class G Amp

Class G amplifiers use multiple power supplies. This hybrid design supplements extra amplification for inbound signals beyond the capacity of the first power supply. The second supply is gradually introduced with increased power as needed.

The result is a very efficient amplifier holding additional power for when required just like a car's turbocharger. Modern rapid silicon allows switching between power supplies to restrict “turbo lag” beyond the audio bandwidth.

Hybrid Design

The initial power supply has reduced power driven in pure Class A free from crossover distortion. The secondary supply increases potential power levels as very little energy is disappated as heat when not in use. To regulate this, multiple output devices integrated in the amplifier maintain a firm grip on the loudspeaker at all times.

AV or Stereo

AV enthusiasts can add matching class G amplification to AVR390, AVR550 or AV850 for a complete 7.1.4 Dolby Atmos setup. For Hi-Fi stereo fans, there is a bridged operation mode which grants up to 270 watts of power per channel.

Other features that simplify amplifier set-up include IP and RS232 control, 12V In/Out triggers and individual channel trims to suit the needs of installers.

Must Audition

In recent years, Arcam has made great bounds in enhancing audio sources and loudspeakers and have now shifted their focus to amplifier design. This amplifier is truly revolutionary for music lovers who understand the correlation between power and control.

Key Features

- Four channel amplifier
- 500W Class G amplification (all channels driven)
- Stereo, Dual Mono or Bridged operation
- Individual channel-trim
- IP control
- RS232 control
- 12V Trigger In/Out

Write Your Own Review

Write a Review

  • 1 star 2 stars 3 stars 4 stars 5 stars
    1 Star 2 Star 3 Star 4 Star 5 Star