D.W. FEARN
VT-12 Microphone Preamplifer
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D E S C R I P T I O N
The Model VT-12 Vacuum Tube Microphone Preamplifier is de signed to provide recording
professionals with a sonically superior input device for ribbon microphones. It is typically
used in sound record ing studios for recording individual tracks. A quality ribbon microphone
is connected to a VT-12 input, and the VT-12 provides a line-level output. In most situations,
the VT-12 will feed directly to the input of the recorder.
The VT-12 is a recreation of the classic tube preamps of the 1960s, updated with improved
modern passive components and computer-aided circuit optimization. Because of the unique
qualities of vacuum tubes, the VT-12 has a clarity, transpar ency, and warmth that solid state
preamps lack. Its modern design and construction allows the VT-12 to exceed the per -
formance of vintage vacuum tube preamps.
It is designed for use in the professional recording envi ronment. It accepts all low impedance
balanced microphones. It features a regulated +48 volt supply for phantom powering con-
denser microphones, a switchable 20 dB input pad, a phase (polarity) reversal switch, and a
true VU meter. It is built to sound great for a long time, with top quality parts used through-
out; all the transformers and many other components are custom-made for the VT-12.
All four power supplies (filament, phantom power, B+, and meter amp) are solid state and
fully regulated. The Gain control potentiometer is a MIL-spec carbon type for long, noise-free
operation.
The VT-12 is not mass-produced. Each one is hand-made and meticulously tested and lis-
tened to before shipment to the customer.
Summary of Contents for VT-12
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