SPACE-TECH Hi-End Audio Laboratory, Vacuum tube amplifier specialist , home of super Hi-end audio

Model no: QA-112

line stage pre-amplifier

Using the most common 6SL7 tubes in the amplification section, this pre-amp is built with a 6X5 tube rectifier which gives you the best medium size tube sound with a low price. The sound is very liquid, dynamic, rich and warm with high definition. This is an all hand-wired state-of-the-art pre-amplifier.

The 'ex' version shown above is built with a bigger chassis and adds more inputs with a dual volume control, solid copper knobs, for a small additional charge.

The middle set of photos shows a low cost version of QA-112 which only has one input and one output, this configuration is C$50 less than the standard price.

Specifications

No. of inputs	2 sets of RCA inputs
No. of outputs	1 set of pre-amp outputs , 1 set of record outputs
Freq response	5Hz - 150Khz (-3db)
S/N	better than 80 db
Distortion	less than 0.2% at 1Vrms output
Gain	x3 - x6 depending on tubes
Phase	180deg inverted
manufacturing	hand-wired point to point
Tubes used	2 x 6SL7 (option: ECC35/ECC32/6SN7/6188) + 6X5

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

0/180deg output phase selector add C$150

1 year free parts and labor warranty under normal operation condition

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

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