Fosi Audio Box X2 Phono Preamp


  • 4-Levels of Output Level Setting (OFF/39/42/45 dB)
  • Preamplifier & MM input
  • Active Speakers
  • Replaceable Electronic Tubes

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  • Tube Phono Preamplifier: converts phono signals to Line Level Signals with Low-noise integrated circuits and high-quality components to remove low-frequency noise ensure clear sound quality;
  • The Gain Setting: 4-levels of output level setting (OFF/39/42/45 dB). It can keep the purity of the sound and avoid the resistor influence.
  • Two Input Way: preamplifier input(CD/DAC/Phone/TV etc.), MM input. The preamp comes with a 12V power supply.MM Grounding post to protect your MM.
  • Matched Tubes: Tubes can be replaced by JAN 5654W/6K4/6J1/6J4/GE5654/6AK5/66*In tubes etc, Different tubes with different sounds.
  • High-Quality After-sale Service: 24 months warranty and 24 hours after-sale service online to provide you a great shopping experience.


Specifications Details
Model BOX X2
Input Mode RCA+3.5mm AUX
Output Mode Active Speakers
Frequency Response Standard RIAA
THD ≤ 0.1%
SNR ≥ 98dB
Product Weight 0.66 lb/300g
Device Dimension 4.66 inch/3.85 inch/1.29 inch
DC Input Range 12V
Input Voltage Range AC 110V – 240V
Output Voltage Level 600 Mv @3mV 1kHz
Power Supply 12V 1.5A

What‘s in the box?

Item Quantity
Box X2 Phono Preamp x 1
Vacuum Tubes x 2
12V 1.5A Power Adapter x 1
RCA Cable x 1
User’s Manual x 1


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