Model no: QA-113-Mk2

Using the 6G6G as both the amplification and output buffer section, this unit features superlative mid-high sound, built with a 6X5 tube rectifier. This gives you the best ST size tube sound with a low price. All hand-wired to the highest possible standard.

Changing the 6G6G to 6V6G, 6K6G, or 6Y6G will net different sound qualities, so you have the flexibility to find the sound you desire. Buy one pre-amp and get 4 different sounding units.

Lowest photo sets show the most updated Mk2 design

The 6X5 tube rectifier can further upgrade by our super rectifier STR-104, 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.

(Note: The price quoted is a special deal for newly order unit only, modification of existing unit will be around $300 higher than the following prices due to more works for disassemble of the original circuits)

Level 1 upgrade : (+ C$200)

Special designed "Super-Drive" circuit, output impedance lowered to 200ohm (can drive any power amp inputs from 600ohm up to infinity) with better bass control and punch , better definition and improved in overall tonal quality. By adding this upgrade, it sounds like the output with 10 pieces of power tubes being installed . With this level of upgrade, just add another $50 and you can have a headphone output with enough power and current to drive your headphone directly.

Level 2 upgrade : (+ C$500)

Level 1 upgrade + Enhanced input circuit design with increase of max. input levels , further lowering of distortion and increase dynamics, as well as better air and openness . Enhanced components quality for better sonic reproductions with higher resoltuions.

Level 3 upgrade : (+ C$800)

Level 1&2 upgrade + Enhancement in components for further sonic enhancement with more 3D holographics soundstage.

Level 4 upgrade : (+ C$1000)

Level 1&2&3 upgrade + Enhanced transformer with 5U4G tube rectifier for better air , smoother and sweeter sound quality

Additonal up-grade options:

0deg / 180deg inverted phase switch add C$150

Solid oak chassis add C$150

19inches standard width Aluminum chassis add C$50

super deluxe solid-oak chassis with super hi-gloss piano finish add C$500

(optional chassis :  Mirror steel, solid-oak )