Fosi Audio BOX X4 Phono Preamp Headphone Amp MM with JAN 5725W Tubes

Key Features

• Pro-Grade MM Phono Stage with built-in grounding terminal to minimize hum and protect vinyl systems.
• JAN 5725W Vacuum Tubes for lower noise and warm analog character.
• Dual Output RCA line-level output plus 3.5mm headphone output for private listening.
• Tube-rolling Flexibility swap stock tubes with compatible 6K4/6J1/GE5654/6AK5 tubes (sold separately).
• Active Bass & Treble Controls adjust ±10dB for bass and treble to suit each record.
• DIY Ready designed for vinyl enthusiasts to tailor sound while preserving analog signal.
• Complete Kit includes BOX X4 phono preamp and DC 12V power supply; extended warranty and customer support.

Specifications

• Brand: Fosi Audio
• Input: MM turntable compatible
• Outputs: RCA line-out, 3.5mm headphone
• Tube: JAN 5725W
• EQ: Bass +/-10 dB, Treble +/-10 dB
• Power: DC 12V

The BOX X4 provides audiophile-grade clarity for vinyl playback with an earth terminal to reduce hum. Ensure your turntable's internal preamp is disabled for pure analog performance.