Model no:   QA-807

 

STR-103 Super rectifier tube upgrade for 5U4G ( C$480 include 3E28/866A x 2 )

With this super rectifier adaptor, you can use 300B, 2A3 , 45 , 50 , 80, 83 , 3B25 , 3B28 or 866A as rectifier tubes option

This is a fully balanced input and balanced output state-of-the-art pre-amplifier. It boasts an ultra high current tube rectified power supply, plus choke with NOS filter capacitors. A separate filament Tx and high-voltage Tx is also included to enhance the dynamics and clarity. This pre-amplifier is the low cost version of the QA-808 which is specially designed for those who like both an ultra sweet sound quality , with a very dynamic, musical, high definition detailed and deep sound stage.

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.

Now available is a super rectifier tube up-grade for the 5U4G, this can greatly enhance the dynamics, high and low frequency extension and bass punch, also boasting a stand-by switch for pre-heating of the rectifier tubes to ensure the longest lifetime operation. Rectifier tubes are replacable with high quality ceramic sockets installed.

(optional chassis : Mirror steel, solid-oak )