The Hazelrigg Industries DVA is a hybrid microphone preamplifier based on the Hazelrigg Industries VLC and D.W. Fearn VT-2 preamp. Utilizing a single 6072a vacuum tube, the input circuitry matches the VLC/VT-2 input stage exactly and features transformers in both the input and output stages.

Make-up gain is provided by a low-THD/high output solid state signal path (as opposed to the vacuum tube circuits in the VLC/VT-2) due to the module size and power supply limitations inherent in the 500 series format. Total gain available is approximately 60 dB.

Many condensers have a high output and require an input pad to avoid overloading the input transformer. If needed, use the pad on the microphone if available. If you’re looking for saturation, engage the -20 db pad and sending the DVA an attenuated signal, then adjust gain for tone and output.

FEATURES:

Vacuum tube microphone preamp (6072a)

Vacuum tube DI (6072a)

Amplifier designed by D.W. Fearn

Transformers in both input and output stages

Front panel microphone/instrument input

Output indicator LED

Polarity reversal switch

-20 dB pad switch

+48V Phantom Power switch with LED indicator

High pass filter switch