Description
🎶 Elevate your vinyl game with tube-powered precision and personalized sound!
- TAILOR YOUR TONE - Unlock endless sonic possibilities by swapping vacuum tubes (6K4/6J1/GE5654/6AK5 compatible) to craft your perfect vinyl vibe.
- PRECISION EQ CONTROLS - Fine-tune bass and treble with ±10dB active controls, enhancing warmth or clarity while preserving the authentic analog character.
- COMPLETE CONFIDENCE KIT - Includes power supply, user manual, and a 24-month warranty backed by responsive customer service—your vinyl’s new best friend.
- AUDIOPHILE GRADE CLARITY - Experience pristine analog sound with the upgraded JAN 5725W vacuum tube preamp and grounding terminal that eliminates hum and protects your vinyl.
- SEAMLESS LISTENING MODES - Switch effortlessly between RCA line-level output for your amplifier and a powerful 3.5mm headphone output for private, late-night sessions.
The Fosi Audio BOX X4 is a high-fidelity phono preamp and headphone amplifier designed for MM turntables. Featuring a low-noise JAN 5725W vacuum tube, dual RCA and headphone outputs, and active bass/treble controls, it delivers customizable, hum-free analog sound. Its tube rolling flexibility and grounding terminal make it ideal for audiophiles seeking warm, detailed vinyl playback, all backed by a 24-month warranty.