Fosi Audio Vacuum Tubes 7-Pin Headphone Amplifier Musical Resonance: The lights dynamically

Musical Resonance: The lights dynamically pulse to the rhythm of the music

Compact and Solid: The P4 stereo preamp features a sleek

If you are not sure this 5645W can be used as a replacement for your audio device

active cooling (such as a fan) is required to ensure stable operation

allowing you to customize the sound to match your preference

Fosi Audio Vacuum Tubes 7-Pin Headphone Amplifier Musical Resonance: The lights dynamicallyEach package contains a pair of fully tested and matched vacuum tubes (2 PCS). 5654W vacuum tubes for T20, P1, P2, Box X2, Box X4. Substitute for 7 pin 6AK5 6AK5W 6Zh1P 6J1 6J1P tubes. It can also directly replace WE 403A 403B EF95 and ordinary 5654. 6J1, 6CB6A, 63N, 6J5, 65N tubes are compatible with audio devices such as BOX X2, BOX X4, P3, GR40, MC331, and T20X MKII. Note: Replacing the wrong type of tube may damage your amplifier. If you are not