Custom Tube Buffered Effects loop driver board designed for tube socket.

PCB only. 

Super compact design. Only 1.4"x2.4" in size. Fits easily in most guitar amps without modifications. 

Super flexible design-can be installed in multiple different ways both internally and with external access. 

6.3v or 12v filament supply either AC or DC is supported. 

Can also wire the board to a tube in your chassis and mount almost anywhere.  

Uses any 12AX7, 12AT7, or 12AU7 type tube.

Designed for use in most Tube Guitar Amplifiers.

Operates in serial and parallel modes.

Send and Return level controls drive long cable runs and any kind of rack or pedal effect with zero loss and amazing headroom and clarity. 

Easy to install. 

Designed for amp building enthusiasts and amp technicians. 

(tube and tube socket not included)

High-quality custom PCB to upgrade your existing amp or replace that solid-state unit with a real Tube Buffered Effects Loop.

You will immediately hear the difference.

This loop is completely transparent and is designed to be installed "always on".