T1 PRO Vacuum Tube Preamplifier Amplifiers Home Audio RCA Bluetooth Input Bass T
(This tube preamplifier does not support phono. Input mode: RCA, Bluetooth. QCC3040 Bluetooth: Version 5.1, supports AAC, SBC, APTX, APTX-LL, APTX-HD. Bluetooth Antenna 1. Electronic tube model: 6186 or 5725 （ Because the tube is unstable ).