DESCRIPTION

 

Dual mono class D power amplifier based on two PURIFI 1ET7040SA.  Each module 1ET7040SA is supplied by one Hypex SMPS1200A400. The front-end board is the EV produced by Purifi, based on dual OPA1612 opamps. It is possible to bypass the pre-gain stage to have an even more neutral and transparent sound.

Compared to the 1ET400A module, the new Purifi  1ET7040SA achieves more power and dynamic and it is more musical and less tiring. The amplifier, like the Hypex NC1200, has a great authority in driving the most hungry speakers.

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NEUTRAL AND CLEAR POWER AMPLIFIER
 
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PRE-GAIN STAGE SETTING

The pre-gain stage based on dual OPA1612 can be bypassed using special jumpers .  When the pre-gain stage is bypassed, both the amplifier gain and the input impedance are reduced.

ACTIVE PRE-GAIN: total gain = 27dB, differential input impedance = 10.2kohm

PRE-GAIN DISABLED: total gain = 13dB, differential input impedance = 4.4kohm

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RCB OPTION . It is possible to add, for each channel, the RCB (Rouge Connection Board) which allows to have double XLR and RCA inputs. It is a passive module made with quality components.
Musician
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Technology

2 x Purifi 1ET7040SA

Technical specifications

Output Power: 2x950W(2Ω), 2x500W(4Ω), 2x250(8WΩ)*

Output Current (each channel): ~40A

THD+N: <0.00035% @ 200W, 4Ω, 1kHz 

Dynamic Range: ~129 dB(A)

Output Noise: ~14µV(A) 

Gain: 27dB (buffered))

Differential Input Impedance: 10.2 kohm (buffered))

Output Impedance: <13µΩ @ 1kHz 

Efficiency: 94% @ 500W, 4Ω, 1kHz 

Idle losses (output stage): 2.8 W ​

 

Inputs: balanced (+unbalanced with RCB option)

Trigger (option)

Mains: 190-250Vac (95-130Vac on request)

Casing: black metal with aluminium front and rear panel (2U)

Measurements: 435x300x80mm (435x400x80mm on request)

Weight: 9,5kg

* The AC mains line voltage affects these general performance data