Pre-Amps - Advance 10000 series

Model no: QA-10001 / QA-10001-Delux
C$3,880 / C$4,380 Direct Order Price

  

line stage balanced input and output tubes pre-amplifier with 100 micro-step volume control

This is one of our best sounding all vacuum tube pre-amplifier with RCA and XLR balanced inputs and outputs with sonic performance that betters those selling for US$15K-20K.  We use only cost-no-object parts and features such as a 274B rectifier, super low output impedance and include our level 1+ 2 upgrades as standard equipment.
We employ the organic way of designing and manufacturing that has zero negative feeback, no circuit board for tube sections, hand-wired component to components and point to point, Space-Tech oil capacitors, high grade ultra heavy-duty transformer and power filter capacitors.  This unit is hand-built with no compromise in component quality, very carefully fine tuned for tonal balance, resolution, sound quality, air and soundstage for a pure effortless delivery.
The end result of our no compromise design and execution is articulation and punch in the bass section, sweetness and liquidity in the midrange, silkiness and openness in the high frequencies.  Our customers report that they want to listen to their system endlessly to any type of music.
Because we could not find an ultra high performance volume pot we built our own 100 micro-step remote controllable volume control non-contact, non-semiconductor super high grade volume pot with proprietary software. The volume pot can select between "DUAL VOLUME" mode or "VOLUME + BALANCE" mode by the toggle switch in front panel, the music signal pass thru no switch contact point and no solid-state devices, extreme pure and transparent sound. We believe this might be the first pre-amp which have this special feature since the earth formed.
Lowest photo set shows solid-oak chassis with additional XLR inputs (additional costs apply).
The 274B tube rectifier in this unit can be upgraded to our super rectifier STR-104 or another higher model.  It is direct plug and play without any mod required.

DELUX VERSION :

Delux version has the following major up-grades:

1. Added high grade choke in power supply for enhancement of musicality

2, Delux version chassis design with replaceable side solid-wood panels

3. total 2 pair XLR outputs + 1 pair of RCA output

4. further enhancement of internal components and wirings

 

With this super rectifier adaptor, you can use 300B, 2A3 , 45 , 50 , 80, 83, 1616 , 3B28 or 866A as rectifier tubes option.

PROMOTION SPECIAL : free IR remote control

Specifications
No. of inputs 1 set of  XLR balanced  inputs, 2 set of RCA inputs
No. of outputs

2 sets of RCA and one set of XLR balanced pre-amp outputs

(default : one set of RCA output wired as record out )

Input / Output impedance Input = 100Kohm (optional : 10K -- 1Mohm) Output = 200ohm
Freq response 1Hz - 150Khz (-3db)
S/N > 85 db
Gain x5 - x8 depend on tube types
manufacturing hand-wired point to point for tube section, digital display section use circuit board
Phase 180deg inverted (option: non-inverted)
Tubes

6SL7 x 2 (alt: 6SN7/6SU7/ECC32/ECC33/ECC35/6188 or eq)

6L6G x 2 (alt: 6V6/6L6/6K6/6Y6/6F6/6G6/EL34/6CA7/5881/6550/KT66//KT77/KT88/KT99/KT100)

274B (alt: 5R4/5V4/53KU/STR-101/STR-104/STR-1001/STR-1002)

PROMOTION SPECIAL : free IR remote control capability by Universal remote

1 year free parts and labor warranty under normal operation conditions
standard chassis : Gold/ Black/Red-brown/Blue/Green/Silver MDF chassis
(optional chassis : Aluminum, Mirror steel, solid-oak ,black piano)



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