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musical instrument details
AVALON VT-737SP Mono Vacuum Tube Preamp, Compressor No Reserve!
Estimated price for orientation: 1 300 $
Category: Preamps and Channel Strips
Class:
Description Condition: Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. See all condition definitions- opens in a new window or tab ... Read moreabout the condition Brand: Avalon MPN: Does Not Apply Model: VT737SP UPC: Does not apply
The Avalon VT-737SP features a combination of TUBE preamplifiers, opto-compressor, sweep equalizer, output level and VU metering in a 2U space.First impressions matter. When a client walks into your studio for the first time, you need to make the best impression, so do yourself a favor: coil your cables, throw out your old coffee cups, and make sure you've got an Avalon VT-737SP channel strip in your outboard rack. Ever since this "Class A Mic Processor" was introduced in the late 1990s, studios large and small have relied on its platinum-sounding tube preamplification, world-class optical compressor, and musical four-band equalization controls. A gleaming, glowing VT-737SP in your rack tells clients you've been in this game for more than little while, and that you're ready for anything they've got.Technically speaking, the VT-737SP's Class A preamplification section is arranged as two cascaded, dual vacuum tube triodes, configured with minimum negative feedback as single-ended, anode-coupled followers. What matters, however, is the sound that this circuit produces. The Avalon sound is one that's beautifully transparent and smooth. It takes whatever instrument, electronic audio, or human voice you feed into it, and gets it ready for international stardom, all without changing the central character of the signal. And the VT-737SP is ready for any input: it supplies 48 volts of phantom power for use with highly detailed vocal microphones, sports a high-gain switch for extended headroom (great for loud sources like amplified guitar), and a direct hi-z input for tracking warm, shimmering electric bass.From the preamp stage, your signal then travels to Avalon's opto-compressor. While it can be used on any signal, the VT-737SP's compression profile works best on instruments with a long decay. Optical compressors respond to changes in dynamics by presenting a photo-resistor with a light source that dims as the volume gets lower--this non-linear decay can't be matched by solid-state compression circuits, and makes sources like voice, guitar, bass, string ensembles, and piano really sing and breathe. Also handy: if you're tracking a stereo source like drum overheads or a choir and you've got two VT-737SPs, you can link their compression circuits together for perfectly synchronized dynamics processing.The equalizer section of the Avalon VT-737SP is a perfect complement to the unit's preamp stage. Each band's range and sweep is tuned with the preamp character in mind, and adjusting each quickly enhances or tames your input signal in a transparent way. Still, there's quite a bit of range you get on the VT-737SP's EQ controls; with shelving on the treble and bass bands, and two separate, sweep-able mid controls with variable Q-widths, you can really focus in on problematic frequencies, or bring out the shimmer. For added flexibility, the EQ can be moved ahead of the compression circuit with the flip of a switch.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 +30dBLine: Balanced Class A 20k ohms, -27dB to 28dBMaximum input level and connector types:Microphone26dB@25Hz, +30dB@1kHz balanced XLR Instrument+30dBunbalanced front panel jack socketLine +36dB balanced XLRMaximum output level: +30dB balanced 600 ohms, DC coupled,discrete Class AOutput type and gain: XLR connector, output trim gain -45dBto20dBNoise 20kHz unweighted: -92dBNoise microphone EIN: -116dB, 22Hz-22kHz unweightedDistortion THD, IMD: 0.5%Frequency response -2.5dB: 10Hz-120kHz input filter includedFrequency response -3dB: 1Hz-200kHz line in-outVU meter and gain reduction: High quality illuminated OVU=+4dB and gain reduction to -20dBHigh cut filter: Variable 6dB per octave 30Hz-140HzCompressor type: Optical passive attenuator incorporatingtwin vacuum tubes and stereo linkThreshold - Ratio: Threshold variable -30dB to +20dB,ratio-compression variable 1:1 to 20:1Attack - Release: Attack variable 2mS to 200mS, releasevariable 100mS to 5 secondsEqualizer type: Discrete Class A, variable active andswitched passive designFrequency bands (4): Treble - switched 10kHz, 15kHz, 20kHz,32kHz, ﾱ20dB range, shelf High mid - variable200Hz-28kHz and 2kHz -28kHz, ﾱ6dB range, hi-lo Q Lowmid - variable 30Hz-450Hz and 300Hz-4k5Hz, ﾱ16dB range,hi-lo Q Bass - switched 15Hz, 30Hz, 60Hz, 150Hz, ﾱ24dBrange, shelfAC power: Internal toroidal 100v to 240v, 50-60Hzselectable, 75 watts maximumDimensions: 19 x 12 x 3.5 in (482 x 305 x 89mm)Weight: 22lbs. (10kg)
Description
| Condition: | Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. See all condition definitions- opens in a new window or tab ... Read moreabout the condition | Brand: | Avalon |
| MPN: | Does Not Apply | Model: | VT737SP |
| UPC: | Does not apply |
The Avalon VT-737SP features a combination of TUBE preamplifiers, opto-compressor, sweep equalizer, output level and VU metering in a 2U space.First impressions matter. When a client walks into your studio for the first time, you need to make the best impression, so do yourself a favor: coil your cables, throw out your old coffee cups, and make sure you've got an Avalon VT-737SP channel strip in your outboard rack. Ever since this "Class A Mic Processor" was introduced in the late 1990s, studios large and small have relied on its platinum-sounding tube preamplification, world-class optical compressor, and musical four-band equalization controls. A gleaming, glowing VT-737SP in your rack tells clients you've been in this game for more than little while, and that you're ready for anything they've got.Technically speaking, the VT-737SP's Class A preamplification section is arranged as two cascaded, dual vacuum tube triodes, configured with minimum negative feedback as single-ended, anode-coupled followers. What matters, however, is the sound that this circuit produces. The Avalon sound is one that's beautifully transparent and smooth. It takes whatever instrument, electronic audio, or human voice you feed into it, and gets it ready for international stardom, all without changing the central character of the signal. And the VT-737SP is ready for any input: it supplies 48 volts of phantom power for use with highly detailed vocal microphones, sports a high-gain switch for extended headroom (great for loud sources like amplified guitar), and a direct hi-z input for tracking warm, shimmering electric bass.From the preamp stage, your signal then travels to Avalon's opto-compressor. While it can be used on any signal, the VT-737SP's compression profile works best on instruments with a long decay. Optical compressors respond to changes in dynamics by presenting a photo-resistor with a light source that dims as the volume gets lower--this non-linear decay can't be matched by solid-state compression circuits, and makes sources like voice, guitar, bass, string ensembles, and piano really sing and breathe. Also handy: if you're tracking a stereo source like drum overheads or a choir and you've got two VT-737SPs, you can link their compression circuits together for perfectly synchronized dynamics processing.The equalizer section of the Avalon VT-737SP is a perfect complement to the unit's preamp stage. Each band's range and sweep is tuned with the preamp character in mind, and adjusting each quickly enhances or tames your input signal in a transparent way. Still, there's quite a bit of range you get on the VT-737SP's EQ controls; with shelving on the treble and bass bands, and two separate, sweep-able mid controls with variable Q-widths, you can really focus in on problematic frequencies, or bring out the shimmer. For added flexibility, the EQ can be moved ahead of the compression circuit with the flip of a switch.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 +30dBLine: Balanced Class A 20k ohms, -27dB to 28dBMaximum input level and connector types:Microphone26dB@25Hz, +30dB@1kHz balanced XLR Instrument+30dBunbalanced front panel jack socketLine +36dB balanced XLRMaximum output level: +30dB balanced 600 ohms, DC coupled,discrete Class AOutput type and gain: XLR connector, output trim gain -45dBto20dBNoise 20kHz unweighted: -92dBNoise microphone EIN: -116dB, 22Hz-22kHz unweightedDistortion THD, IMD: 0.5%Frequency response -2.5dB: 10Hz-120kHz input filter includedFrequency response -3dB: 1Hz-200kHz line in-outVU meter and gain reduction: High quality illuminated OVU=+4dB and gain reduction to -20dBHigh cut filter: Variable 6dB per octave 30Hz-140HzCompressor type: Optical passive attenuator incorporatingtwin vacuum tubes and stereo linkThreshold - Ratio: Threshold variable -30dB to +20dB,ratio-compression variable 1:1 to 20:1Attack - Release: Attack variable 2mS to 200mS, releasevariable 100mS to 5 secondsEqualizer type: Discrete Class A, variable active andswitched passive designFrequency bands (4): Treble - switched 10kHz, 15kHz, 20kHz,32kHz, ﾱ20dB range, shelf High mid - variable200Hz-28kHz and 2kHz -28kHz, ﾱ6dB range, hi-lo Q Lowmid - variable 30Hz-450Hz and 300Hz-4k5Hz, ﾱ16dB range,hi-lo Q Bass - switched 15Hz, 30Hz, 60Hz, 150Hz, ﾱ24dBrange, shelfAC power: Internal toroidal 100v to 240v, 50-60Hzselectable, 75 watts maximumDimensions: 19 x 12 x 3.5 in (482 x 305 x 89mm)Weight: 22lbs. (10kg)