D. W. Fearn VT24 Vacuum Tube Mic Preamp
The VT-24 has eight tubes, but it runs cool enough that no fan is required.
Features:
- Four independent channels
- Each channel identical to the legendary VT-2 Mic preamp
- 3RU (5.25”) of rack space
- Uses the same custom Jensen audio transformers as the VT-2
- 48V Phantom power, 20dB pad, switchable for low-Z mics, polarity (phase)
- 8 tubes, but runs cool (no fan)
- 120/230V rear panel switchable (100V with internal jumper)
Quotes
“Like most of our products, the VT-24 came about because it was something I needed for my own recording projects. I wanted to record every microphone with VT-1/VT-2 mic preamplifiers, but I was running out of rack space in my small control room. A four-channel version of the VT-2 would double my preamp capacity in the same space. I did not want to compromise on the sound nor on the features of the VT-2. The VT-24 uses the identical circuit and custom Jensen input and output transformers as all our mic preamplifiers. It has four true VU meters, but they are smaller than on a VT-1/VT-2. Specs are the same as a VT-2, and, most importantly, the sound is exactly the same.” – Company founder, Douglas Fearn
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
- Inter-modulation Distortion SMPTE: less than 0.02%
- Signal to Noise Ratio: 74 dB minimum
- Equivalent Input Noise: -124 dBm maximum
- 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) D
- Weight: 20lbs (9kg)