Fosi Audio Box X5 Phono Preamplifier Bring out the detail in every record. The Box X5 supports both MM and MC cartridges and offers four adjustable gain levels (38, 48, 56, 66 dB) for perfect matching and true dynamic range. High-precision components, exact RIAA equalization, and ultra-low noise mean your analog audio stays pure—from turntable to amplifier. Rugged aluminum chassis ensures shielding and durability, while easy RCA connections, a ground terminal, and a user-friendly toggle deliver plug-and-play simplicity. MM/MC Universal Compatibility: Easily switch between moving magnet and moving coil cartridges. 4-Stage Gain Control: Optimize your setup for every cartridge and every record. Accurate RIAA EQ: Delivers warm, smooth, and natural sonic character. Audiophile Components: Features precision film capacitors, resistors, OPA1612 op-amp, and gold-plated RCA jacks. Durable Aluminum Design: Compact with front-panel power and simple controls. Why Box X5? Unlock better clarity, bigger soundstage, and richer vinyl playback—no fuss, just fresh detail from every groove.