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Avalon VT737SP Tube Channel Strip (Open Box)


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MSRP: $2,750.00 $2,399.99 Save : $350.01 (13%)
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MSRP: $2,750.00 $2,399.99 Save : $350.01 (13%)
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The Avalon VT-737sp will add warmth, clarity and character to your recordings. Sam Ash Direct has the guaranteed lowest price and fast free, shipping.

It takes a clever, meticulous design to deliver a sweet, warm, detailed audio signal. Meet the Avalon 737sp. It’s a full-featured tube channel strip combining a microphone preamp, instrument DI, opto-compressor and sweepable equalizer, all in a 2U rack space.

The Avalon 737sp is an ideal front end to any DAW (digital audio workstation) or tape based recording device. The high performance tube mic pre includes an input transformer (helps to reject unwanted interference including radio frequencies) and +48v phantom power for your condenser microphones. There are 4 high quality tubes in the path offering oodles of warmth and rich tone. There’s a front panel instrument DI (direct input) and a balanced, discrete high level class A input, all benefiting from the glorious tube presence. Next inline is a class A vacuum tube opto-compressor with complete in-depth controls. Soft compression to hard limiting can be easily achieved. It has attack, release, threshold and ratio compression. De-essing is achieved utilizing the dual sweep mid EQ to side-chain switch.

Now that your signal is under control, there’s the 100% discrete class A transistor equalizer section. It has a musical passive filter design yielding tasty delicious tones that go from subtle tweaking to drastic tone shaping…all controlled with easy to grab control knobs (nothing beats the feel of a well constructed rotary knob for precise tuning.). Any elements of this loaded strip can be switched on or off so you get great flexibility during tracking. There’s also a tube driven 100% discrete, class A low noise output amplifier to send your fantastic signal out into the world. All the action can be measured with the onboard, center of the action VU meter, switchable for output level monitoring or gain reduction reading. Two 737sp’s can be linked for stereo tracking as well as mixdown and overall conditioning duties. It also doesn’t hurt that the Avalon 737sp is one heck of a looker and makes any recording setup that much sweeter to the eye. The Avalon 737sp will deliver your signal in beautiful sounding, 1st class style and give your recordings the thick, rich tone you’d expect from a company like Avalon.

Get your Avalon VT737SP Direct Signal Path Channel Strip today from Sam Ash Direct and enjoy the confidence that comes from fast, free shipping, the guaranteed lowest price and our 45/60-day return/price protection policy.

  • 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

  • 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  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 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 maximum

Things You Will Get:

  • Channel Strip
  • Manual
  • Power Cable


by PowerReviews
Series VT Series
Model VT737SP Microphone Preamp
Warranty Info:

The manufacturer’s warranty covers parts and labor for one year from date of purchase. The warranty excludes damage from misuse, abuse, and contains other exclusions.