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Avalon VT737SP Tube Class A Voice Channel

£2,514.00 £2,095.00 (ex. vat)

Avalon VT737SP

  • Avalon VT737SP
  • Avalon VT737SP Rear
  • Avalon VT737SP
  • Avalon VT737SP

Avalon VT-737SP

The Avalon VT-737SP is a premium channel strip delivering tube warmth with exceptional detail and clarity. The VT737SP features a Class-A tube preamp, opto-compressor, sweep equalizer, output level and VU metering in a 2U space. 

The Avalon VT-737SP has three input types:

  • Microphone input with +48v phantom selection.
  • Instrument DI input with jack located on front panel
  • Balanced line input, discrete high-level Class A

The phase can be flipped on all three inputs and thre is a passive variable high pass filter.

AVALON VT-737SP Features

  • Vacuum tube triode signal path
  • Transformer balanced microphone input
  • High-voltage circuits for maximum headroom to +30dB, low noise -92dB
  • Internal discrete power supply with toroidal transformer
  • Soft-start tube life extender
  • Stereo link for compressors
  • All discrete Class A equalizer with musical passive filter design
  • Sealed silver relays for signal routing
  • Large control knobs with professional conductive plastic potentiometers
  • VU meter for output level monitoring and compressor gain reduction.

Avalon VT-737SP Specifications

  • Circuit topology: Four 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: 
    • Microphone 26dB@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 to 22kHz unweighted
  • Distortion THD, IMD: 0.5%Frequency response -/2.5dB 10Hz to 120kHz input filter included
  • Frequency response -3dB: 1Hz to 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 to 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 to 2k8Hz and 2kHz to 28kHz, +/- 16dB range, hi-lo Q Low mid - variable 30Hz to 450Hz and 300Hz to 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 maximumDimensions 19 x 12 x 3.5 in (482 x 305 x 89mm)Weight 22lbs (10kg)
  • Dimensions-shipping carton: 21 x 18 x 8 in (533 x 457 x 203mm)
  • Weight-packed: 26lbs (11.8kg)
Manufacturer Avalon
Model VT737SP
GTIN 0696818737001
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