PURIFI Mono Front End for 1ET400A / 1ET6525SA

Highlights

• Mono front-end board for PURIFI 1ET400A and 1ET6525SA amplifier modules
• Balanced XLR analog input with 14.4 dB gain
• Banana-plug speaker outputs plus solder points for additional speaker connections
• OPA1612-based low-noise, low-THD pre-gain stage
• Compact 75 x 63 x 39 mm board weighing 120 g

Product details

PURIFI Mono Front End for 1ET400A / 1ET6525SA Front-End Board

The PURIFI FE03 is designed for DIY and evaluation setups using a single 1ET400A or 1ET6525SA EIGENTAKT amplifier module. It provides the practical interface and control features needed to operate the amplifier module in a compact mono configuration.

Connectivity includes one balanced analog input via XLR, banana-plug speaker outputs and additional solder points for alternative speaker connector options such as SpeakON. The board also includes connectors for a shared power supply, making it suitable for clean and organized amplifier builds.

The FE03 uses an OPA1612 op-amp in the pre-gain stage and low-noise linear voltage regulators for the op-amps. It offers a fixed gain of 14.4 dB and supports supply voltages of ±32 V to ±70 V for VP, 15 V for VDR and ±18 V for VUNREG.

Status LEDs and pin headers provide access to functions such as I2C and status information. With dimensions of 75 x 63 x 39 mm and a weight of 120 g, the FE03 is a compact and practical front-end solution for high-performance PURIFI mono amplifier projects.