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.

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.

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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

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Highlights

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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

Dimensions (L x W x H) 82 x 63 x 35 mm

Mounting hole spacing 75 x 56 mm

Mounting hole diameter

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What’s In The Box?

1ET400A amplifier module