Upgrades

Any model can built-in USB input with an additional cost of C$200

Any model can add 24/192K data input capabilities along with USB input , with an additional cost of $500

Standalone USB input to SPDIF coaxial output adaptor C$280, SPDIF + AESEBU output version C$480

With our most advanced USB input port, you can play MP3 , WMA, WAV, DVD , VCD....etc on computer through external DAC to boost the sonic performance . You can also use your iPod or MP3 player connect to this USB port for sonic enhancement. Plug and play design, no software required.

Super rectifier tube up-grade for 6X5 / 5U4G / 5AR4 ....etc replacement
$880 (STR-104)

(can use 300B/2A3/45/50/83/80/866A and a lot more....)

Super rectifier tube up-grade for 6X5 / 5U4G / 5AR4 ....etc replacement
$1,180 (STR-1001)

(can use 845 / 805 / 211 / 872A and a lot more....)

Super rectifier tube up-grade for 6X5 / 5U4G / 5AR4 ...etc replacement
$1,880 (STR-1002)

(can use 845 / 805 / 211 / 872A and a lot more....)