VT-2 Dual Channel Vacuum Tube Microphone Preamplifier

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 Microphone Preamp, 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. 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.

New to the VT-2 is an integrated, switchable 43 dB pad, enabling it to be patched into the Master Buss during mixdown and mastering to provide D.W. Fearn’s unique sonic signature to the final mix or mastering process. The new design now makes the VT-2 a veritable triple threat, equally at home in recording, mixing, and mastering.

Features
All vacuum-tube design
Lo-Z input position for superior performance with transformerless microphones
Phase (polarity) reverse switch
+48 volt phantom power (completely disconnected when off)
Custom-design Jensen input and output transformers
20 dB input pad (switchable)
True VU meters (amplifier isolated)
All point-to-point audio wiring
Gold input and output XLR connectors
Polypropylene and polystyrene coupling capacitors
All audio switching through gold-contact, sealed precision relays
International operation on 100, 120, or 220 VAC, 50/60 Hz
CE certified, RoHS-compliant
+4 dBm output
Conservatively rated precision components and rugged construction for stability and long life

Specifications
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
Power Requirements 100, 120, or 220 VAC, 50/60 Hz
Dimensions 19” (48.26cm) W, 5.25” (13.34cm) H, 14” (35.56cm)