The PURIFI FE08 is a deluxe stereo front-end board for integrating and operating 1ET6525SA or 1ET7040SA amplifier modules, with balanced XLR inputs, speaker outputs, selectable gain and practical control connections.
Highlights of the PURIFI FE08
- Stereo front-end board for PURIFI 1ET6525SA and 1ET7040SA amplifier modules
- Balanced analog XLR inputs and banana-plug speaker outputs
- Four selectable gain settings: 3 dB, 11.6 dB, 13.7 dB and 17.2 dB
- Ultra-low-noise, low-THD pre-gain stage with FET-input discrete op-amp
- Includes status LEDs, BTL-mode header, I2C access and additional status pin headers
- Compact 60 x 146 x 39 mm board weighing 120 g
Product details PURIFI FE08
PURIFI FE08 Deluxe stereo front-end board for 1ET6525SA/1ET7040SA amplifier modules
The PURIFI FE08 is designed for DIY integration and convenient evaluation of PURIFI 1ET6525SA and 1ET7040SA amplifier modules. It provides the essential input, output and control connections needed to operate a stereo Eigentakt-based amplifier setup in a clean and practical way.
For signal input, the FE08 uses balanced XLR connectors, while the speaker output side offers banana-plug connections plus solder pads for additional speaker connector options such as SpeakON. The board also includes connections for enabling and disabling operation and for connecting a shared power supply.
The audio path includes an ultra-low-noise, low-THD pre-gain stage using PURIFI’s FET-input discrete op-amp design. Four gain settings are available, 3 dB, 11.6 dB, 13.7 dB and 17.2 dB, allowing the frontend to be adapted to different system requirements. Ultra-low-noise linear voltage regulators supply the op-amps for stable operation.
Additional integration features include a pin header for setting the connected module into BTL mode, status LEDs and various pin headers for access to I2C and status information. The FE08 operates with supply voltages of ±35 V to ±70 V for VP, 15 V for VDR and ±18 V for VUNREG, making it a focused solution for advanced DIY amplifier builds where robust thermal design and a suitable power supply are essential.
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