Model no: QA-806-Mk2

This is a fully balanced input and balanced output state-of-the-art pre-amplifier which boasts an ultra high current tube rectified and tube regulated power supply, plus a choke with NOS and oil filter capacitors . A separate filament Tx and high-voltage Tx is included to enhance the dynamics and clarity. A Choke / bypass switch enables users to fine-tune the speed of this pre-amp. This super pre-amplifier is specially designed for those who like both very sweet sound quality , high dynamics, very musical, high definition, and a very detailed and deep sound stage. (Everything good that you are expecting is inside this pre-amp! )

The output buffer stage characteristics can change with over 10 different types of tubes: (6G6/6L6/6V6/6Y6/6K6/EL34/6550/KT66/KT88/KT90/KT100) for exact tuning to match the rest part of your system.

The 5U4G tube rectifier can further upgrade by our super rectifier STR-104 or higher models , direct plug and play without any mod required.

With this super rectifier adaptor, you can use 300B, 2A3 , 45 , 50 , 80, 83, 1616 , 3B28 or 866A as rectifier tubes option.

(optional chassis : Mirror steel, solid-oak )