Easy installation of the plug-type vacuum tube shieldġ.Selection of Japanese high-grade ALPS motor potentiometer.There is a power tube current control button and an electric meter dial.It has a pure power amplifier ans it can conncet with an independent pre-amp's signal input.The ultra-linear connection is suitable for the big scence, the sound is more open and lively. Use special high selected KT88 tube as push pull power amp lamp,providing switch for the triode connnection and ultra-linear connection modes.The triode connection mode is more suitable for the voice and the sound is more soft, delicat as well as nature.Use 2X12AX7 and 2X12AU7 as amplifiaction,.Amplification and drive part use SAR4 rectifier.Using a customize Z11 core toroidal power transformer.using two high quality and wide frequency response EI output transformer.Working conditions: Temperature: 0 ✬ ~ 40 ✬Humidity: 20% to 80%.Harmonic distortion: 1% (1kHz) Frequency Machine: 15Hz ~ 30kHz (-1.5dB).

Input Sensitivity: 280mV 520mV (pre input).output balance of the left and right:

Pulltube review