Tube Pre-Amps (View by Category)

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Add IR (Infra-red) motorized remote volume for $250

Add IR + Bluetooth motorized remote volume for $350

Add 100 micro step IR remote volume for $800

Add 24bit/192Khz SPDIF input DAC for $300

Add Blue-tooth analog receiver for $300

DHT prestige series

QA-DHT-845

Virtual Tube series (MOSFET + OPT)

VTP-100

ASP series (with subsonic compensation and micro-dynamics extraction circuit)

ASP-10001-ES

Passive Pre-amp with 100 micro-step ultra high precision and low noise remote volume control

RV-001...........................RV-002.............................RV-1003

Combo series (multi-function combo design with phono , DAC, headphone amp...etc)

CP-101 .........................CP-102...........................CP-103..............................CP-1001 ........................CP-1001-TP

Reference series (super enhanced parts + oil caps + choke + QUAD-core output transformers designs)

Reference-1.....................Reference-1-RV ........Reference-1-Ultra........Reference-2 ................Reference-3

Classic 100 series (regular hi-end audiophile grade designs)

.QA-001-Mk3..................QA-112-Mk3 / Mk4.............QA-114-Mk2...................QA-115-REG

QA-115-Mk4......................QA-118-REG ........... QA-118-BAL-TXC

Classic 800 series (Deluxe vintage NOS parts design)

QA-806............................QA-808

Advance 10000 series (100 step ultra-remote design)

.QA-10001-Delux..........QA-10008.........................QA-20008

Legend 300B series (for 300B sound lovers)

QA-300B-Mk2..................QA-300B-REG,,,,,,,,,,,,,,QA-300B-BAL.................QA-300B-BAL-REG

Deluxe Royale series (deluxe sound and elegant finishing design)

QA-8001........................ROYAL-PRE1

Super Rectifier Upgrades

STR-104.....................................STR-1001.....................................STR-1002

Any model can add additional heavy duty gold plated RCA inputs and outputs (first set + C$100, second set up + C $80 ea)

Any model can buld with any type of chassis and color, add or subtract anything from regular design, price might vary

Any model can add headphone output with 1Wrms x2 +C$180

Any model can add solid-state MC/MM phono stage for +C$450 (P-001 model)

Any model can add pure tube MM phono stage for +C$700 (P-101 model)

Any model can add tube MC/MM phono stage for +C$1,000 (P-102 model)