Feature●With a pair of upgraded JAN GE 5654W vacuum tubes for better sound performance●Excellent sound performance; No background noise; Warm and soft tube sound; Sound quality enhancement; Pure tube preamplifier; Suitable for all amplifiers and music types●With independent treble, bass and volume control; Vacuum tubes can be replaced by various models●Mini size and exquisite appearance; CNC aluminum shell and front panel; Blue tube light; Mellow and solid touch feelingDescription This is for a NS-10P preamp and a pair of GE5654 tubes