BRZHIFI FV3-PRO Passive RCA Preamplifier / Analog Volume Control

The BRZHIFI FV3-PRO is a passive stereo preamplifier / analog volume controller designed to precisely adjust the level of a signal between an audio source and an amplifier or active speakers, without signal amplification (0 dB gain). It uses a 50kΩ ALPS RK27 potentiometer for volume control and features RCA connectivity for integration into a Hi-Fi system. Its passive operation allows direct control of the signal level while maintaining a simple design, while a remote control allows adjustments to be made remotely. The FV3-PRO is powered via USB-C 5V / 1A or higher, and its compact enclosure measures 69 × 112 × 49mm and weighs 464g, making it easy to integrate into a desktop or Hi-Fi audio setup.