Avalon VT737 SP Tube Voice Channel

VT737 SP Tube Voice Channel description:

The Avalon VT737 SP Tube Voice Channel. 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

The main specifications of the Avalon VT737 SP include:

• 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)