Description
Arcam FMJ P49 Stereo Power Amplifier
High-end 2-channel Class G power amplifier with 200 watts per channel into 8 ohms, 400 watts into 4 ohms, and 50 watts of Class A operation for serious stereo and system-building use.
The P49 is clearly not an entry-level power amp. It is built around serious power, serious control, and flexible system use, making it a strong option for customers building a proper two-channel or high-end AV setup.
This is the sort of amplifier that makes sense when the brief is refinement and authority, not just volume.
Built for Serious Two-Channel Systems
A proper power amp when the brief is control, scale, and flexibility
The P49 delivers 200W per channel into 8 ohms and 400W into 4 ohms, while also giving 50W in pure Class A mode before handing over to Arcam’s Class G topology.
That tells you exactly what this amplifier was built to do. This is a power amp for customers who want grip, scale, and refinement rather than just a box that happens to make speakers louder.
Class G with Class A Operation
A more sophisticated design than a conventional brute-force amplifier
The P49 uses Class G amplification with 50W of Class A operation, combining efficiency with strong reserve power.
That gives it a more premium flavour than a plain high-power power amp and helps explain why Arcam positioned it as one of its highest-performing amplifiers.
Flexible System Building
More than just a stereo amp if the system grows
The P49 can be configured as a traditional stereo power amp, bridged mode, or dual mono mode.
That gives it a very clear role for higher-end systems. It is not just a fixed stereo amplifier with one job. It is a flexible platform for customers building something more ambitious over time.
Strong Input and Noise Specs
Built to behave like a serious reference amp
The P49 has input sensitivity of 1.15V via RCA and 2.3V via XLR, 10k ohm input impedance, 20Hz–20kHz frequency response ±0.05dB, and 110dB signal-to-noise ratio.
Those are properly serious figures and support the way Arcam talks about the amplifier’s control and refinement.
Heavy Chassis, Sensible Standby Power
Substantial enough to feel serious without being impractical
The chassis measures 433 x 425 x 171 mm and weighs 18.0 kg net, while standby power consumption stays under 0.5W.
That makes the P49 feel appropriately substantial for a high-end stereo power amp, but still realistic for normal rack or cabinet placement in a serious hi-fi or AV room.
Specifications
| Specification | Details |
|---|---|
| Brand | Arcam |
| Model | FMJ P49 |
| Product Type | 2-Channel Class-G Power Amplifier |
| Status | Discontinued |
| Power Output per Channel, 8 ohms | 200W (both channels driven, 20Hz–20kHz, 0.2% THD) |
| Power Output, 4 ohms | 400W (single, at 1kHz) |
| Amplifier Topology | Class G |
| Class A Operation | 50W |
| Input Sensitivity | 1.15V (RCA), 2.3V (XLR) |
| Input Impedance | 10k ohms |
| Frequency Response | 20Hz–20kHz ±0.05dB |
| Signal-to-Noise Ratio | 110dB (A-weighted, 50W / 8 ohms) |
| Standby Power Consumption | <0.5W |
| Dimensions (W x D x H) | 433 x 425 x 171 mm |
| Weight (Net) | 18.0 kg |
| Weight (Packed) | 19.7 kg |
| EAN / UPC | 5060133602330 |
Detailed Technical Specifications
For those who like to drag out all the useful bits
View full technical specifications
Core Design
- 2-channel Class-G power amplifier
- Discontinued model
- Toroidal-based power supply
- Acoustically damped chassis
- Paralleled transistor output stages
Power and Performance
- 200W per channel into 8 ohms
- 400W into 4 ohms
- 50W of pure Class A operation
- Distortion during normal operation claimed at less than one part per million
- Frequency response: 20Hz–20kHz ±0.05dB
- Signal-to-noise ratio: 110dB (A-weighted)
Inputs
- RCA input sensitivity: 1.15V
- XLR input sensitivity: 2.3V
- Input impedance: 10k ohms
Configuration Options
- Traditional stereo mode
- Bridged mode
- Dual mono mode
Dimensions and Weight
- Dimensions: 433 x 425 x 171 mm
- Weight: 18.0 kg net
- Weight: 19.7 kg packed
- Standby power: <0.5W
The Audio Experts Take
The Arcam FMJ P49 makes a lot of sense when the brief is a serious stereo power amplifier with real authority and flexibility. The 200W per channel output, Class G topology, 50W of Class A operation, and ability to run in stereo, bridged, or dual mono mode all point to an amplifier that was built for customers who actually care about control, refinement, and system building.
What we like here is that it looks commercially honest. It is not trying to sell itself on gimmicks. It is a heavy, serious, high-power Arcam amplifier aimed at people building proper two-channel or reference-level systems.
Discontinued model. One left box available. Contact us for current availability or alternative Arcam amplifier options.
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