Amphion Amp400 Amplifier
Best multichannel amplifier for professional custom audio installations.
Experience superior audio with the Amphion Amp400, a powerful multichannel amplifier designed for demanding environments. Available in 8- or 12-channel configurations, it offers identical, discrete channels for consistent, high-resolution sound. Its robust aluminum chassis is 19" rack mountable, ensuring a clean setup. The universal power supply adapts automatically to global voltages, making it versatile for any professional audio application. Drive multiple pairs of passive speakers with exceptional clarity and seamless integration.
$4500.00
More Amp Options
Owner Satisfaction
4.8
/ 5
Category Rank
168
/ 1719
#168 in Power Amplifiers
Price vs Category Average
-45%
Below average
Power Output
41041
/ W into ohms (% THD+N)
Who it's for
- Amphion monitor users seeking perfect system synergy
- Mixing and mastering engineers needing absolute sonic accuracy
- Studio owners requiring high power in a compact footprint
Who should skip it
- Audiophiles preferring the warmth of traditional Class A designs
- Budget-conscious producers looking for entry-level pricing
- Home studio users needing versatile consumer input connections
Performance breakdown
Power Density
Class D efficiency delivers massive output in a compact rack-mount footprint.
Channel Consistency
Discrete architecture ensures identical sonic performance across every single channel.
Professional Connectivity
Balanced XLR inputs and Neutrik connectors guarantee a secure, noise-free signal.
Build Integrity
Robust aluminum chassis provides the durability required for demanding studio environments.
Global Versatility
Universal power supply adapts seamlessly to any electrical grid worldwide.
Dynamic Range
High-resolution headroom captures every nuance of complex, demanding audio signals.
Key Specs
Power Output
410W into 4 ohms (1% THD+N)
Power Output
205W into 8 ohms (1% THD+N)
Amplifier Class
D
Dynamic Range
121.5 dB(A)
Inputs
Balanced 3-pin XLR female
Speaker Connectors
Neutrik Speakon (NL2FX)
Dimensions (H x W x D)
133 x 483 x 330 mm
Weight
7.5 kg (Amp400.8) or 8 kg (Amp400.12)
Features
- Multichannel flexibility for custom audio systems
- Identical, discrete channels ensure uniform performance
- High-quality aluminum 19" rack mountable chassis
- Class D amplification for efficiency and power
- Balanced XLR inputs for professional connectivity
- Universal auto-selecting mains voltage
- Designed for high-resolution audio setups
- Drives multiple pairs of passive speakers
What customers say
Customers overwhelmingly praise the Amphion Amp400 for its sonic neutrality and transparency, making it ideal for critical listening and professional work. Reviewers consistently note its exceptional speed, massive dynamic headroom, and robust dual-mono design, which delivers superb stereo imaging. The amplifier is celebrated for acting as a 'straight wire with gain,' allowing the true character of the speakers to emerge uncolored. Build quality is described as robust and reliable for demanding studio use. While the investment is high, users find the cost justified by the dramatic improvement in clarity, transient response, and low-end control compared to other amplification options. It is viewed as an indispensable tool for revealing subtle mix details.
Know before you buy
The primary difference is the number of discrete amplification channels available. Both models share the same high-resolution performance and power specifications, allowing you to choose the configuration that best fits the number of passive speakers in your specific setup.
Yes. The Amp400 features a universal power supply that automatically detects and adapts to local mains voltage, ranging from 100V to 240V at 50-60Hz.
The amplifier uses professional-grade Neutrik Speakon (NL2FX) connectors. These provide a secure, reliable locking connection for your passive speakers.
Yes, the unit is designed with a robust aluminum chassis that is 19 inches wide and occupies 3U of rack space, making it easy to integrate into professional audio racks.
The amplifier provides 410W per channel into 4-ohm loads and 205W per channel into 8-ohm loads. This ensures ample headroom for demanding high-resolution audio applications.
The Amp400 is designed for professional connectivity and features balanced 3-pin XLR female inputs. We recommend using balanced cables to ensure the cleanest signal path and to minimize potential interference.
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$4500