specification of QA-111-bal

Model no: QA-111-BAL-SP

line stage balanced input and output pre-amplifier with super low output impedance

This model uses the most common 6DJ8 / 6922 in the pre-amp section. This architecture gives you the best fully balanced small tube sound with a low price.

The output impedance is so low it can drive any 600ohm input impedance power amplifier without any problem.

For a traditional balanced design, you must have both the input and output balanced in order to get the added boost in performance of balanced amplification. With our new state-of-the-art design this limitation no longer exists. This means you can use either the balanced input or output, and still have the sonic improvement of balanced amplification. (About a 70% improvement which only input + output balanced amplification can achieve).

The lowest photo set shows a special version equipped with a bigger transformer and big tube rectifier.

Specifications

No. of inputs	1 set of RCA inputs, 1 set of balanced inputs
No. of outputs	1 set of RCA and XLR balanced outputs , 1set of record outputs
Freq response	1Hz - 150Khz (-3db)
S/N	better than 85db

Gain	x7-x10 depending on the gain of the tubes
Phase	180deg inverted (option: non-inverted)
manufacturing	hand-wired point to point
Tubes used	6 x 6DJ8/ 6922

1 year parts and labor warranty under normal operation conditions

Options :

Upgrade to enhanced Tx with 5U4G rectifier add C$400

0/180deg output phase selector add C$150

standard chassis : Gold/ Black/Metallic MDF , Aluminum chassis

(optional chassis : Mirror steel, solid-oak, black piano )