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  5. Avalon VT-737SP Valve Microphone Preamp

Avalon VT-737SP Valve Microphone Preamp

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Discontinued, this product can no longer be ordered.

Alternative items
Avalon VT-737SP Valve Microphone Preamp
Product no: SEL-AVAVT-737SP

Product information

General

The ultra-high-end Avalon VT-737SP mono microphone amplifier serves the microphone signal with valve-driven preamps, an opto compressor, and a richly detailed EQ section, resulting in transparent, warm, and lush sound whether used in the studio or as part of a live rig.

The Avalon VT-737SP Preamp

The VT-737SP provides three input options, each with phase relay: the standard-issue microphone input complete with 48V phantom power supply, an instrument DI input with a front-fitted jack input, and a balanced line input. The Class-A mono preamp is supported by two cascaded valve triodes with negative feedback, and a set of four tubes, while the high-gain boost ensures controlled signal adjustments and the passive high-pass filter completes the deal.

Opto Compression & Sweep Equalizer

The opto compressor can be controlled with immense detail, and contrasting with classic opto compression, the attack and release can be set as well as the threshold and make-up gain. Accurately squeeze the signal to gain anything from subtle dynamic control to lush, character-packed limiting, and everything in between. The four-band equaliser further shapes the sound with a high-shelf and a low-shelf with an incredibly gradual curve, and a low-mid and high-mid band with a switchable Q-factor.

Bax Music Warranty: This product comes with a 3-year warranty, the tubes come with a 3-month warranty.

Specifications

Product features

19-inch rack size 2U
Number of channels 1
Digital output no
Sustainable product not specified
Energy source AC
Phantom power yes
Phase reverse yes
Feedback dection/eliminator no
Frequency bands per channel 3 - 5 bands
Headphone output no
Built-in compressor yes
Built-in equaliser yes
Built-in limiter no
Connection sockets none
Switchable boost/cut no
Stereo function yes
Analogue audio input type balanced line in (XLR), microphone input (XLR), Hi-Z instrument input (TS jack)
Analogue audio output type balanced line out (XLR)
Type of dynamic processor compressor
Equipped with tube yes

Weight and dimensions including packaging

Weight (incl. packaging) 18,0 kg
Dimensions (incl. packaging) 58,0 x 47,0 x 21,0 cm

Product specifications

  • analogue valve mono instrument and microphone preamp
  • 4 dual triode vacuum Sovtek 6922 valves
  • unbalanced 6.3mm jack instrument input, +30dB
  • balanced XLR line and microphone input, +30dB
  • balanced XLR output with trim, -45dB to 20dB gain
  • input frequency response: -/2.5dB 10Hz to 120kHz
  • output frequency response: -3dB 1Hz to 200kHz
  • analogue Vu meter
  • variable high cut filter from 6dB per octave 30Hz to 140Hz
  • variable compressor threshold from -30dB to +20dB
  • variable compressor ratio 1:1 to 20:1
  • variable compressor attack from 2ms to 200ms
  • variable compressor release from 100ms to 5sec
  • 4 EQ frequency bands
  • treble: switching 10kHz, 15kHz, 20kHz, 32kHz, +/- 20dB range
  • high mid: 200Hz to 2k8Hz and 2kHz to 28kHz, +/- 16dB range
  • low mid: 30Hz to 450Hz and 300Hz to 4k5Hz, +/- 16dB range
  • bass: 15Hz, 30Hz, 60Hz, 150Hz, +/- 24dB range
  • dimensions: 482 x 305 x 89mm (19", 2U high)
  • weight: 12 kg

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