The Avalon VT737 SP Limited Edition Tube Voice Channel in Black. Delivers impeccable clarity with tube warmth and presence for your mic, instrument or line mono channel.
The Avalon VT737 SP Mono Mic Pre/Compressor/EQ is a combination tube preamp, opto-compressor and sweep equalizer, with output level and VU metering in 2 rackspaces. Balanced mic, front-panel instrument DI, and balanced line inputs. Class A preamp uses 2 cascaded, dual vacuum-tube triodes configured with minimum negative feedback. The Avalon Vt 737sp has a high-gain switch, high-pass filter, and hardwire relay bypass..
The main features of the Avalon VT737 SP include:
- Tube preamp
- Opto-compressor
- Sweep equalizer
- Output level control
- VU metering
- Balanced mic input, front-panel instrument DI, and balanced line inputs
- High-gain switch
- High-pass filter
- Hardwire relay bypass
- Circuit topology: 4 dual triode vacuum tubes (Sovtek 6922), high-voltage discrete Class A
- Gain Range Microphone: Transformer balanced 850/2500 ohm, 0dB to +58dB Instrument: Unbalanced 1 meg ohm, 0dB to +30dB
- Line: Balanced Class A 20k ohms, -27dB to 28dB
- Maximum input level and connector types: Microphone26dB@25Hz, +30dB@1kHz balanced XLR Instrument+30dB unbalanced front panel jack socket
- Line +36dB balanced XLR
- Maximum output level: +30dB balanced 600 ohms, DC coupled, discrete Class A
- Output type and gain: XLR connector, output trim gain -45dB to20dB
- Noise 20kHz unweighted: -92dB
- Noise microphone EIN: -116dB, 22Hz-22kHz unweighted
- Distortion THD, IMD: 0.5%
- Frequency response -2.5dB: 10Hz-120kHz input filter included
- Frequency response -3dB: 1Hz-200kHz line in-out
- VU meter and gain reduction: High quality illuminated OVU =+4dB and gain reduction to -20dB
- High cut filter: Variable 6dB per octave 30Hz-140Hz
- Compressor type: Optical passive attenuator incorporating twin vacuum tubes and stereo link
- Threshold - Ratio: Threshold variable -30dB to +20dB, ratio-compression variable 1:1 to 20:1
- Attack - Release: Attack variable 2mS to 200mS, release variable 100mS to 5 seconds
- Equalizer type: Discrete Class A, variable active and switched passive design
- Frequency bands (4): Treble - switched 10kHz, 15kHz, 20kHz, 32kHz, +/-20dB range, shelf High mid - variable 200Hz-28kHz and 2kHz -28kHz, +/-6dB range, hi-lo Q Low mid - variable 30Hz-450Hz and 300Hz-4k5Hz, +/-16dB range, hi-lo Q Bass - switched 15Hz, 30Hz, 60Hz, 150Hz, +/-24dB range, shelf
- AC power: Internal toroidal 100v to 240v, 50-60Hz selectable, 75 watts maximum
- Dimensions: 19 x 12 x 3.5 in (482 x 305 x 89mm)
- Weight: 22lbs. (10kg)
