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Model no:   QA-227 deluxe

QA-227.jpg  

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line stage full balanced Vintage NOS bulb tubes pre-amplifier

This unit is a fully balanced input and balanced output state-of-the-art pre-amplifier. The UX-227 is a single triode antique vacuum tube, which has very good linearity for both large and small input signals and with excellent sonic performance. The QA-227 deluxe features an ultra heavy current tube rectifier with NOS oil filter capacitors and a high grade choke, oil filled coupling capacitors , black beauty coupling capacitors, and high grade philips output capacitors. Boasting a separate filament transformer and high-voltage transformer enhances the dynamic range and clarity.

This pre-amplifier is built with no compromise in component quality, and it virtues can be heard in the characteristic delivery of this preamp: very sweet , liquid, and realistic sound quality. It boasts excellent dynamic range, musicality, high definition and a very detailed, deep sound stage. This pre-amp is suitable for almost any type of music reproduction, it can outperform almost any mass-market available pre-amp in any price range.


 

Specifications
No. of inputs 1 set of  XLR balanced  + RCA  inputs, 1 set of RCA input
No. of outputs 1 set of RCA + XLR balanced pre-amp output , 1 set of record outputs
Freq response 1Hz - 100Khz (-3db)
S/N better than 80 db
Gain x4- x8 depend on gain of tubes
Phase 180deg inverted
manufacturing hand-wired point to point, all NOS capacitors , resistors, choke  and transformers
Tubes used 4 x UX-227 (option: 27 / 37) + 2 x UX-235 (option:UX-224A/24A/35) + 5U4G (option:WE274B/5AR4/5Y4G/5V4G/5R4GYB/ or 83/80/280/283/380 with adaptor)

1 year parts and labor warranty under normal operation conditions
standard chassis : Gold/ Black/Metallic MDF , Gold/Silver Aluminum chassis

(optional chassis : Mirror steel, solid-oak )

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