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The Avalon Vt 737sp 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.

Avalon Vt 737sp Mono Mic Pre/Compressor/EQ Features:

  • 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

Get tube warmth, a high-class mic pre, compression, and EQ all in one. Order today.

Avalon Vt 737sp Mono Mic Pre/Compressor/EQ Specifications:

  • 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)

Avalon Vt 737sp Mono Mic Pre/Compressor/EQ

Write A Review

Average of 12 User Ratings

Overall

Overall: 9.27

Quality

Quality: 9.67

Features

Features: 9.40

Value

Value: 8.53

Customer Reviews

Overall

Overall: 8

Quality

Quality: 8

Features

Features: 9

Value

Value: 3

not so fast........................
Posted by c.locke from oklahoma city on Dec 12, 2008
Experience w/product: I own it
Reviewer's Background: recording engineer,composer
Reviewer's Play Style: gospel hip hop
The avalon is alright, a lot of it is hype. I had the chance to compare it to the la 610 mkii on every level and the la610 just sounded better period. Depending on what sound your looking for, don't be fooled by the price. I feel the la610 was more cleaner, although the avalon has more eq control you have to look at the whole pic. But every piece of gear has pro & cons.

Overall

Overall: 9

Quality

Quality: 10

Features

Features: 8

Value

Value: 8

Beautiful Sound at a large price
Posted by 808 booming from Hawai'i on Jul 27, 2008
Experience w/product: I have used it
Reviewer's Background: Recording Engineer, Active Musician
Reviewer's Play Style: Mod Rock, Funk, Hip Hop, Jazz, Metal
WARM & CLEAN...At the studio I used to work in, we would use this as the pre for almost EVERYTHING - vocals, acoustic guitar, bass, cello, violin, etc. While it's not a magic box, the difference between going direct into the board and using this is huge - like the difference between photographing in natural sunlight and under florescent lights. Not my favorite compressor, best used subtly & compressed later in the chain, but my favorite preamp of all.

Overall

Overall: 9

Quality

Quality: 10

Features

Features: 9

Value

Value: 9

Nice Preamp
Posted by Rahbaba from Germany on Jan 9, 2008
Experience w/product: I own it
Reviewer's Background: Active Musicians
Reviewer's Play Style: Blues, Rock, Pop, etc...
Nice smooth sound. The equalizer section is very useful and musical. The compressor section is ok. If it had a limiter on it, that would help quite a bit. Overall, it imparts a very nice sound to the source audio. Oh, and I absolutely love the way a bass plugged directly into (front panel) sounds! If you can't get good sounds out of this, sell your stuff and stick to recording to cassette decks.

Overall

Overall: 10

Quality

Quality: 10

Features

Features: 10

Value

Value: 9

Nothing Holds A Candle...
Posted by Mulholland Studios from Los Angeles, CA on Nov 11, 2007
Experience w/product: I own it
Reviewer's Background: Recording Engineer- Studio Owner
Reviewer's Play Style: Rock - Blues - Jazz - Folk - R &B
The Avalon Vt 737sp is the be all end all preamp in my book... I have worked extensively with summit pres, neves pres, and even ssl stuff... nothing is a versatile and easy to use... The eq sound full and rich... the compresion is sweet and has cool ways you can feed it through the signal chain... also the natural tube distortion you can get is like nothing I've ever heard... bottom line you can't beat it... My only complaint would be it's price... I would love to buy a secound one for stereo tracking but I have to hold off because of the price... But trust me I own cheaper presonus and ART stuff... none of it holds a candle.............

Overall

Overall: 8

Quality

Quality: 10

Features

Features: 8

Value

Value: 8

Good but not Great
Posted by JV from Philly Burbs on Apr 28, 2007
Experience w/product: I have used it
Reviewer's Background: 30+, musician, vocalist, DJ
Reviewer's Play Style: All
I've been recording my vocals and a few friend's vocals with karaoke backing tracks for years now and could never figure out why I couldn't get that slick, warm professional "record" sound. So I bought one of these to see if it would do the trick. Unfortunately, it sounds about exactly the same as other methods/equipment I've tried. I have an AT 4033 mic going into a Firewire 410 and then into SONAR 5. I experimented by recording my vocals through a MACKIE CFX12 board and then simultaneously outputting one channel to the Avalon/FW and the other directly into the Firewire. Result: just about the same sound. I guess the magic is in the mixing and application of FX and double tracking, etc. Oh well, I guess I'm going to return the unit and be happy with the current front end of my recording (I also sometimes use an Aphex 107 preamp). The only real complaint I have is that the compressor didn't seem to have a limiter function.

AS far as looks go, it's definitely a nice heavy duty professional looking unit but I think a lot of this "warmth" stuff is more in people's heads rather than in their ears. To be honest, I also did an A/B with the Aphex vs the Avalon and couldn't really hear any noticeable difference between the 2. Maybe this says a lot for the M-ADIO FW 410 - it sounds just as good!

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Avalon Vt 737sp Mono Mic Pre/Compressor/EQ

Overall: 9.27Read 12 Reviews

$2,249.99

MSRP: $2,500.00 Savings: $250.01(10%)

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Avalon Vt 737sp Mono Mic Pre/Compressor/EQ

Overall: 9.27Read 15 Reviews

MSRP: $2,500.00

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