All our products are
Hand-made in the U.S.A

Instruction Manuals

VT-1 and VT-2 Vacuum Tube Microphone Preamplifier Manual

VT-4 Equalizer Manual

VT-7 Stereo Compressor Manual

VT-15 Recording Channel Manual

VT-3 Vacuum Tube DI Manual

LP-1 Line Pad instruction sheet

PDB Passive Direct Box instruction sheet

VT-I/F Instrument Interface DI Manual
(this product has been discontinued and replaced by the VT-3 DI, but the manual is included here for reference

How to purchase our products