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The 1ET7040A is the new class D amplifier module from Purifi Audio. Compared to the previous 1ET400A module, this new amplifier is able to deliver much more current (40A) and power, especially on low loads (950W into 2ohm), while maintaining the same very low levels of noise and harmonic distortion.  


Output Power: 950W (2Ω), 500W (4Ω), 250 (8WΩ)

Output Current: ~ 40A

THD + N: <0.00035% @ 200W, 4Ω, 1kHz 

Dynamic Range: ~ 129 dB (A)

Output Noise: ~ 14µV (A) 

Gain: 13dB

Output Impedance: <13µΩ @ 1kHz 

Efficiency: 94% @ 500W, 4Ω, 1kHz 

Idle losses (outpt stage): 2.8 W