Accessories

Super Tube Rectifiers (STR)

Experience an immediate enhancement in sound quality, with an airy and expansive soundstage, improved natural tonality, refined micro and macro dynamics, and exceptional musicality and 3D holographic imaging. Once integrated into your system, this device becomes an indispensable component.

This device provides a substantial upgrade for 5U4G, 5Y3, 5Y4, 5AR4, 274B, and all compatible rectifier tubes—without requiring any changes to your existing system.

For rectifiers such as 6X4, 80, 83, and others, an optional adapter cable or converter is required.

For application with a power amplifier or intergrated amplifier, please note the following:

• If the high-voltage supply circuit was built with protection fuse, then it is recommend to change the "Operate / Standby" switch into "Operate / Soft-start" , at no extra cost. If the STR has choke installed (e.g. in Super version) , then just enable the choke for start-up can mimic the soft-start process.

• Without this modification or without choke enabled , the STR’s higher current-handling capability may cause the fuses to blow during startup. Just set to Soft-start mode when power up the amplifier, and set to Operate mode after start up will be okay. If the STR already has built-in choke, then enable the choke when power on the amp, and you can let the choke stay enable or disable for regular operation.

Important Caution for Mercury Vapor Tubes
When using mercury vapor tubes with the STR:

• Never switch off the filament supply before powering down the connected device.

• If high voltage is applied to a mercury vapor tube while its filament is not properly powered, the characteristic bluish glow will intensify, and tube life will be significantly reduced.

In short: always ensure filament power is active before high voltage is applied.

STR-104-Mk2 / STR-104-Mk2-SUPER

STR-104-Mk2-DUAL / STR-104-Mk2-SUPER-DUAL

STR-1001 / STR-1001-SUPER

STR-1002 / STR-1002-SUPER

STR-1003

STR-1004