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musical instrument details

Avalon VT-737 Class A Tube Mic Preamp, Compressor & EQ

Estimated price for orientation: 950 $

Category: Preamps and Channel Strips
Class:











Description
Brand: Avalon Model: VT-737sp
Number of Channels: 1 Features: High Impedance Input, Phantom Power, Phase Reverse, Rack-Mountable
Type: Channel Strip


Avalon VT737sp
Brilliant microphone preamp, lots of features with its compressor and a great sounding EQ
Perfect for vocals, acoustic, bass guitar...The unit is in great working condition. Recently serviced with fresh valves.
A few marks and scratches from equipment above and below in the rack being moved. Most noticeable a scratch on top above the VU display.
Nothing that effects performance or makes it look bad. Selling due to a recent Mixing desk purchase, and since i have two of these, selling one to make some money back.Item located in Coventry, midlands.
Ship to UK only,PreamplifierThe VT-737SP has three input selections: 1. The VT-737SP features a higher-performance microphone input transformer with +48v phantom selection. 2. Instrument DI high source input with jack located on front panel. 3. Balanced line input, discrete high-level Class A. The Class A preamplifier utilizes two cascaded, dual vacuum tube triodes configured with minimum negative feedback. A high gain switch boosts the overall gain of the preamplifier. The four high quality tubes are configured as singled ended anode coupled followers. A passive-variable high pass filter and hard-wire relay bypass completes the input signal conditioning. The phase reverse relay is available on all three inputs.
Opto CompressorThe opto-compressor features a minimum signal path design with twin Class A vacuum tube triodes for gain matching. The optical attenuator acts as a simple passive level controller. Full dynamic control from soft compression to hard- knee limiting can be achieved with threshold, ratio-compression, attack and release controls plus gain reduction selection on the large VU meter. Special spectral control including de-ess is available with the dual sweep mid EQ to side-chain switch. The EQ section can be flipped pre or post the opto-compressor via a front panel switch for alternate effects and tone shaping. Two VT-737SPs can be linked via a rear panel link cable for stereo tracking. The compressor bypass is a sealed silver relay for the most direct signal path.
Sweep Equaliser & Output LevelThe VT-737SP equalizer utilizes 100% discrete, Class A-high-voltage transistors for optimum sonic performance. The high and low frequency bands provide the smooth characteristics of an all passive design, while the dual mid bands include variable frequency and switched Q-width selection. The enhanced range of the mid bands is extended into the high and low bands by the use of X10 frequency multipliers. The bypass switch incorporates a sealed silver relay for the most direct signal path. When the EQ to sidechain is engaged, the high-low EQ remains in the audio path for "tone enhancement". The output level control provides a variable control of the overall signal path. The output amplifier utilizes another dual triode vacuum tube driving a 100% discrete, Class A, high-current, balanced and DC coupled low noise output amplifier.
FeaturesVacuum tube triode signal pathTransformer balanced microphone inputHigh-voltage circuits for maximum headroom to +30dBLow noise -92dBInternal discrete power supply with toroidal transformerSoft-start tube life extenderStereo link for compressorsAll discrete Class A equalizer with musical passive filter designSealed silver relays for signal routingLarge control knobs with professional conductive plastic potentiometersVU meter for output level monitoring and compressor gain reduction