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Item # 186102 | Customer Ratings: Ratings ( 4 Based on 2 reviews)

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Avalon VT-747SP Stereo Compressor EQ
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Vacuum-tube warmth and presence with solid-state flexibility.

The Avalon VT-747SP Stereo Compressor"EQ lets you choose between tube tone and the classic Class A discrete transistor sound. Ideal for high-performance DAW input signal conditioning, stereo bus compression-EQ, stereo keyboards, and analog mastering applications. This Avalon Compressor combines a stereo tube-discrete Class A opto-compressor with musical 6-band program EQ, L-R output level and gain reduction metering, and internal regulated power supplies. All in just 2 rackspaces.

Avalon VT-747SP Stereo Compressor EQ Features:

  • Stereo Class A 6-band discrete passive program EQ
    TSP twin signal path, vacuum tube bypass
    Low noise -92dB
    Fully balanced Class A input and DC coupled outputs
    Stereo dynamic 60dB high resolution output meters
    High-quality analog VU meter for gain reduction
    High headroom +36dB input before overload
    Spectral side-chain monitor for pre listen
    EQ pre-post selection for opto-compressor
    Sealed silver relays for all signal routing
    Internal discrete regulated power supplies
    Military spec vacuum tubes for long life and low noise


Avalon VT-747SP Stereo Compressor EQ Specifications:

  • Circuit topology: 3 dual triode vacuum tubes (Sovtek 6922), high-voltage discrete Class A mode
    Input gain range: Balanced, Class A, 20kOhms, -20dB to +16dB with high gain switch
    Maximum input level: +36dB balanced XLR pin 2 hot
    Maximum output level: +30dB balanced 600 ohms, DC coupled, discrete Class A
    Output type: XLR connector, output trim gain -45dB to +6dB
    Noise: 20kHz unweighted -92dB
    Distortion: THD, IMD: 0.5%
    Frequency response: -3dB 1Hz-200kHz
    Gain reduction meter: High quality, illuminated gain reduction meter 0dB to -20dB range
    Output meter: Twin 20-segment LED VU meters with -27dB to +30dB range
    Compressor type: Optical passive attenuator
    Make-up gain: Variable 0dB to +10dB stereo tracking
    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
    Sidechain spectral contour: Variable threshold -15dB to +15dB, frequency 70Hz to 9kHz twin ranges
    Equalizer type: Discrete Class A, passive design optimized for full range program material
    Frequency bands (6): Variable amplitude LF +/-24dB 15Hz shelf response
    Variable amplitude MF1 ±8dB 125Hz selected Q response
    Variable amplitude MF2 ±4dB 500Hz selected Q response
    Variable amplitude MF3 ±4dB 2kHz selected Q response
    Variable amplitude MF4 ±10dB 5kHz shelf response
    Variable amplitude HF ±20dB 32kHz shelf response
    AC power: Internal toroidal 100V to 240V, 50-60Hz selectable, 70 watts maximum
    Dimensions: 19" x 12" x 3-1/2" (482 x 305 x 89mm)
    Weight: 22 lbs. (10kg)
    Weight-packed: 26 lbs. (11.8kg)


Avalon VT-747SP Stereo Compressor EQ

One year parts and labor warranty. 90 day warranty for tubes.

Get your gear covered!

Now you can get added warranty protection for your new gear. Pro Coverage steps in where the manufacturer's "normal wear and tear" ends. Our PRO COVERAGE program offers you UPGRADED COVERAGE if your product ever fails!

Pro Coverage includes:

  • Accidental damage protection (new gear only)
  • Expedited Repair
  • Free Shipping (for returns or repairs)
  • 100% Coverage for Commercial Use
  • Extended Return Period
  • Extended Price Protection
  • No Lemon Guarantee
  • Free Transfer of Coverage to a new owner
  • Repair Costs Covered for up to 3 years from date of purchase
  • Repairs Can Be Authorized Toll-Free by Phone or the via the web
Product Reviews
(Based on 2 reviews)
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  • Best Stereo Compressor

    As reviewed by WF Studios on 10/27/2006

    I've used a ton of compressors but for stereo sources the Avalon VT-747 is my favorite. Switches quickly from clean Class A solid-state to a warm tube sound at the push of a button. Your mixes will come to life when run through the 747. It is also great on keyboards, stereo guitar processors, drum machines, and even makes samplers sound "bigger." Run the stereo outs from your electronic drum kit though a VT-747 to give them more life. Finally, I have found the 747 to be a very useful tool for mastering; its 32khz slider can add substantial "air" opening up dull mixes and giving them new life. Try one - you will be impressed!

    11 of 11 people found this review helpful.
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  • A clear compressor that does not compromise

    As reviewed by Fuzzball on 9/26/2006

    I have never been a big fan of over compressed music but I decided to use this unit in my friends studio anyway. The unit did a very good job, especialy on Bass guitar. The compressor does an excellent job if you need to use suttle compression on vocals. I even tried to use the unit on a keyboard and I had decent results. I would not say that this unit is the best compressor I have ever used but it is definitly on of the best I have used in its price range!

    7 of 9 people found this review helpful.
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