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PURIFI 1ET400A 1x425W
PURIFI 1ET400A 1x425W. Eigentakt Amplifier Module
The 1ET400A is a single-channel, ultra-high performance, analog-input Class D amplifier module capable of over 400W of power and provides an audio quality level that sets the standard for power amplifiers of any operating class.
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The 1ET400A is a single-channel, ultra-high performance, analog-input Class D amplifier module capable of over 400W of power and provides an audio quality level that sets the standard for power amplifiers of any operating class.
Highlights:
Single-channel, analog input
Negligible THD and IMD
Extraordinary low noise
Load-invariant response
Exceptionally clean clipping
Low losses & high efficiency
Small formfactor
Product details:
PURIFI 1ET400A | Eigentakt | Amplifier Module
This high-performance amplifier module is based on the Eigentakt technology from PURIFI. The 1ET400A is one of the most high-end options from our amplifier module category. Eigentakt is the implementation of PURIFI's continuing research into nonlinear control theory that produced the first mathematically exact largesignal model of self-oscillating amplifier controllers. This breakthrough allows complete optimization of the feedback circuit and improves performance by at least an order of magnitude over existing implementations. The Eigentakt technology allows for extreme low THD at any frequency and power level. The negligible IMD (intermodulation distortion) creates a highly resolved and stable stereo image. Thanks to the very low output noise, this exceptional performance is preserved even at low listening levels.
The 1ET400A also features a comprehensive protection system that makes it robust and easy to integrate.
Features:
High loop gain (>75dB) in the entire audio band
Negligible Intermodulation Distortion (IMD)
THD remains extremely low at any frequency and any power level
Negligible output noise
High power supply rejection ratio (PSRR)
Controlled, second-order low-pass response
What’s In The Box?
1ET400A amplifier module
The 1ET400A module requires attention on the power supply and signal input connections. We recommend to use a dedicated front-end module that provides a buffered input and handles the power supply connections. PURIFI developed the FE02 stereo front-end module for this purpose. This module enables an evaluation setup but is also suitable for DIY applications.
Specifications:
Article number: 1ET400A
Rated power output:
425 watts at 4 ohms
227 watts at 8 ohms
450 watts at 2 ohms
Minimum load: 2 ohms
Efficiency: > 94%
Signal-to-noise ratio (SNR): 131 dB
Distortion: 0.00017 % THD+N at 20-20,000 Hz, 4 ohms, 100 watts
Frequency response: 0 - 60,000 Hz
Gain: 12.8 dB
Input sensitivity: -
Input impedance:
4.4k ohms (differential mode)
2.2k ohms (common mode)
Amplifier Classification: Class D
Circuit Topology: Eigentakt
Speaker output channels: 1
Input connection type: Pin header
Speaker output connection type: Pin header
DSP function: -
Bluetooth: -
EQ Adjustment: -
Power Requirements: 25 - 70 VDC (symmetric supply +/-)
Power inlet connector: Pin header
Current limit: 25 A
Under/over voltage protection: Yes
Dimensions (L x W x H): 82 x 63 x 35 mm
Mounting hole spacing: 75 x 56 mm
Mounting hole diameter: M3
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