Profile: D.W. Fearn & Associates is a manufacturer of vacuum tube audio recording equipment, including microphone pre-amplifiers, equalizers, compressors, DI interfaces, and accessories. We provide vacuum tube microphone pre-amplifier, stereo compressor, equalizer, stereo equalizer, microphone pre-amp, recording channel, direct recording of electric instruments, passive direct box, line pad and vented rack panel. Our services include warranty registration, replacement tubes, recall sheets, and on-line support. We have the passive direct box. This single-channel DI uses the top-of-the-line Jensen direct box transformer in a heavy-duty steel box.