The iFi ZEN PHONO 3 is a precision phono preamplifier designed for discerning vinyl enthusiasts. It accommodates both moving-coil and moving-magnet cartridges with four selectable gain settings spanning 36dB to 72dB, plus four input impedance configurations to optimize loading for your specific cartridge. An integrated subsonic filter eliminates infrasonic rumble that can stress speakers and mask musical detail. The circuit achieves an exceptional -151dBV equivalent input noise floor, ensuring whisper-quiet backgrounds. Precise RIAA equalization with balanced XLR output maintains signal integrity, while an internal 1.2MHz switching power supply minimizes noise injection into the audio path.