PMT Audio
D.W. Fearn VT-2

D.W. Fearn

VT-2

Microphone Preamplifier

From D.W. Fearn:

VT-Series Microphone Preamplifiers have long been the weapon of choice for top artists, engineers, producers, and other audio professionals. Designed to deliver unparalleled performance in ultra high-fidelity tracking sessions, any microphone or sound source will benefit from the improved clarity, definition, and lack of solid-state artifacts that are the hallmarks of the VT-Series.

In designing the VT Series of Microphone Preamplifiers, no compromise in sonic quality, reliability, or ruggedness was permitted. Like the best tube equipment of the 1950s and ’60s, each VT preamp is hand-built on a heavy-gauge aluminum chassis, utilizing point-to-point wiring. Additionally, each and every vacuum tube is selected for minimum noise and microphonics, and to deliver maximum sonic clarity. The front panel switches control sealed, gold-contact precision relays for all audio switching, totally eliminating the possibility of dirty contacts degrading the sound quality while minimizing the internal audio path. Four class-A triode amplifier sections (in two tubes) in each channel comprise the entire active circuit.

This elegantly simple circuit, expertly executed with top-quality components and careful design optimization, provides the sonic superiority that the VT-Series preamps have become known for.

Specs

Type
Dual channel vacuum tube microphone preamplifier
Input
150 ohms
Input load impedance
1.5k ohms
Minimum input level
-65 dBm nominal
Maximum input level @ 20 cps
-30 dBm without pad, -5 dBm with 20 dB pad
Gain
53 dB
Frequency response
+/-0.25 dB 20 cps to 20 kc; -3 dB @ 0.5 cps and 55 kc
THD+Noise
less than 0.25% 20 cps to 20 kc
Intermodulation distortion
SMPTE less than 0.02%
Signal to noise ratio
74 dB minimum
Equivalent input noise
-124 dBm maximum
Output
low-Z, transformer-balanced
Maximum output level
+22 dBm, 20k ohm load
Phantom power
+48 volt phantom power (completely disconnected when off)
Pads
20 dB input pad (switchable), integrated switchable 43 dB pad for Line Level processing
Meters
True VU meters (amplifier isolated)
Connectors
Gold input and output XLR connectors
Power requirements
115 or 230 VAC, 50/60 Hz
Dimensions
19" (48.5 cm) W, 5.25" (13.5 cm) H, 14" (36 cm) D

Source: D.W. Fearn VT-2 product page