Fosi Audio Box X4, Review and Thoughts Headphone Reviews and Discussion

The Fosi Audio Box X4 is a multi featured tube phono pre-amp marketed primarily for use with turntable audio setups. The Box X4 is compatible to use with both speakers and/or headphones.

The Opamp thread, Page 477

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Fosi Audio Box X4 Phono Preamp with JAN 5654W Vacuum Tubes for MM Turntable Phonograph Record Player with Volume Bass Treble Control : Electronics

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Take a look at the Fosi Audio Box X4.

Fosi Audio Box X4 Phono Preamp with JAN 5654W Vacuum Tubes for MM Turntable Phonograph Record Player with Volume Bass Treble Control : Electronics