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VT 747 BLACK & BLUE

The Avalon VT-747SP combines a creative STEREO tube-discrete Class A spectral-opto-compressor with a musical six band program equalizer, L-R output level and gain reduction metering and internal regulated power supplies in a 2U space. Ideal for high performance DAW input signal conditioning, stereo buss compression-EQ, stereo keyboards and analog mastering applications.

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FEATURES

* Stereo Class A opto-compressor with spectral control
* Stereo Class A six 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
 

SPECIFICATIONS

Circuit topology: Three (3) dual triode vacuum tubes (Sovtek 6922), high-voltage discrete Class A mode.
  • Input gain range: Balanced, Class A, 20k ohms, -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 to 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
  • Side-chain 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)AC power: Internal toroidal 100v to 240v, 50-60Hz selectable, 70 watts maximum
    • 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
  • Dimensions: 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)

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