Description
Anthem P5 Five-Channel Power Amplifier
Multi-Mono Muscle for Serious Home Theatre
The Anthem P5 is a five-channel power amplifier built for high-performance home theatre systems that demand real current delivery, stability, and control. This is the kind of amplifier that makes speakers feel easier to drive, dialogue more intelligible, and big dynamic moments feel effortless rather than strained.
If you’re building a separates-based cinema system, the P5 is designed to be the backbone: powerful, quiet, and engineered to keep all channels consistent, even when the soundtrack gets brutal.
Multi-Mono Design, Real Channel Separation
The P5 uses a multi-mono approach where each amplifier channel is effectively treated as its own self-contained amplifier stage. The practical benefit is excellent channel separation, low crosstalk, and a soundstage that stays cohesive even with complex multi-channel material.
This architecture is backed by serious output device count and substantial heatsinking, designed to deliver stable high-current power without relying on noisy cooling fans.
High Current Power for Modern Speaker Loads
Home theatre systems do not just need watts, they need stable current under load. The P5 is rated at 325 watts per channel into 8 ohms, and scales up substantially into lower impedances, making it well suited to demanding speakers and real-world multi-channel setups.
It is engineered to stay composed under stress, with wide bandwidth, low distortion, and a noise floor that stays out of the way of fine detail.
Installation Friendly Control and Connectivity
With both balanced XLR and single-ended RCA inputs for each channel, the P5 integrates cleanly into separates systems. A rear-panel input mode switch supports RCA, XLR, or an attenuated XLR option for systems that require it.
Trigger control is included, along with manual and auto power modes for flexible installation and day-to-day convenience.
Specifications
| Specification | Details |
|---|---|
| Product Type | Five-channel power amplifier |
| Channels | 5 |
| Power Output (all channels driven) | 325 W per channel into 8 Ω, 500 W per channel into 4 Ω, 675 W per channel into 2 Ω |
| Inputs | 5 x RCA, 5 x XLR |
| Speaker Outputs | 5 pairs speaker binding posts |
| Trigger | 3.5 mm mono relay trigger input and output |
| THD+N (225 W into 8 Ω) | 0.0007% at 1 kHz, 0.008% at 20 kHz |
| IMD (325 W into 8 Ω) | 0.00019% (CCIF) |
| Signal to Noise Ratio | 125 dB A-weighted (ref. 325 W) |
| Damping Factor | Greater than 600 at 20 Hz, 400 at 1 kHz (ref. 8 Ω) |
| Frequency Response | 20 Hz to 20 kHz (+0, -0.15 dB), 5 Hz to 100 kHz (+0, -2 dB) |
| Power Bandwidth | 10 Hz to 150 kHz (+0, -3 dB at 325 W into 8 Ω) |
| Voltage Gain | 29 dB |
| Slew Rate | 40 V/µs |
| Supply Voltage | 105 to 130 V, 60 Hz |
| Power Consumption | 2 x 1800 W |
| Dimensions (H x W x D) | 23.8 cm x 49.0 cm x 57.2 cm (including feet and handles) |
| Weight (unpacked) | 59 kg |
Detailed Technical Specifications
For those who like to see exactly how it’s built and how it works
View full technical specifications
Inputs and Outputs
- Inputs: 5 Single-Ended RCA, 5 Balanced XLR
- Trigger: Relay Trigger input (3.5 mm mono jack)
- Outputs: 5 pairs speaker binding posts
- Trigger: Relay Trigger output (3.5 mm mono jack)
Distortion and Noise
- THD+N (225 W into 8 Ω): 0.0007% at 1 kHz
- THD+N (225 W into 8 Ω): 0.008% at 20 kHz
- IMD: 0.00019% (CCIF, 325 W into 8 Ω)
- Signal to Noise Ratio: 125 dB, A-weighted (ref. 325 W)
Bandwidth and Frequency Response
- Power Bandwidth: 10 Hz to 150 kHz (+0, -3 dB, 325 W into 8 Ω)
- Frequency Response: 20 Hz to 20 kHz (+0, -0.15 dB)
- Frequency Response: 5 Hz to 100 kHz (+0, -2 dB)
Gain, Sensitivity, Impedance, Control
- Input Sensitivity (RCA and XLR 0 dB inputs): 1 Vrms in for 28.3 Vrms out (100 W into 8 Ω)
- Input Impedance: 18 kΩ (RCA)
- Input Impedance: 22 kΩ (XLR)
- Damping Factor: greater than 600 at 20 Hz (ref. 8 Ω)
- Damping Factor: 400 at 1 kHz (ref. 8 Ω)
- Voltage Gain: 29 dB
- Slew Rate: 40 V/µs
- Crosstalk: -140 dB at 20 Hz, -80 dB at 20 kHz
Switching and Power Modes
- Front panel switch: Power On and Off
- Rear panel switches: On and Off modes (Trigger, Manual, Auto)
- Rear panel switches: Input selection (RCA, XLR, XLR -6 dB)
Power Output (continuous RMS)
- Measurement basis: 20 Hz to 20 kHz, less than 0.1% THD, one or all channels driven
- 8 Ω: 325 W (1 channel driven), 325 W (all channels driven)
- 4 Ω: 500 W (1 channel driven), 500 W (all channels driven)
- 2 Ω: 675 W (1 channel driven), 675 W (all channels driven)
- Stability note: designed to remain stable into any impedance down to a short circuit at full output
Power Requirements and Physical
- Supply Voltage: 105 to 130 V, 60 Hz
- Power Consumption: 2 x 1800 W
- Dimensions: Height 23.8 cm including feet
- Dimensions: Width faceplate 49.0 cm, width chassis 43.8 cm
- Dimensions: Depth 57.2 cm including handles
- Weight (unpacked): 59 kg
The Audio Experts Take
The Anthem P5 is built for home theatre systems where you want real headroom and real control across every speaker. It’s not just about playing loud, it’s about keeping the system calm and composed when soundtracks get dense and dynamic.
If you’re pairing a high-quality AV processor with serious speakers, the P5 is the kind of amplifier that makes everything feel easier: better grip, cleaner dynamics, and a more effortless presentation across all channels.
📦 Brand new
🛡 Full Australian warranty
📍 Available in store and via home theatre installation at The Audio Experts
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