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Special Order
Note: This item may not be returnable or could require a restocking fee. Contact one of our Audio Consultants for more details. Due to the special nature of this item, we order each unit fresh from the factory, exclusively for you! Lead times may vary so please chat, call or email for up-to-date inventory status.



Buzz Audio Velox-DC Optical Compressor - Silver

Dual-channel optical compresser utilizing Buzz Audio's BE41 discrete opamps
MFR# Velox-DC

Product Description

Buzz Audio first manufactured the SOC-1.1 in 1999 and it brought to the market an optical (light dependent resistor) compressor with more user control than what was available at the time (LA series for example). The unit was immensely popular and Buzz built hundreds of them, but the construction was a bit messy and time consuming, so, the SOC-1.1 was retied and replaced with the Buzz Audio Velox Optical Compressor!


The Velox sports the same amazing compression character of the original SOC-1.1 but Buzz Audio have added a MIX control so you can blend the input signal with the compressor output. It also includes a BASS filter into the side chain to reduce the sensitivity of the compressor at low frequencies. The upgraded "DC" version of the Velox, available here, features high-end Class A discrete transistor BE41 amplifiers.


The Velox is very easy to use for recording individual tracks or on the stereo mix buss because of the "soft knee" characteristic. The AUTO attack and release settings have been perfected to provide natural compression and in many cases that's all you will ever need for acoustic or vocal work. The MIX control allows you to use the 20:1 (virtually brick wall limiting) compression and blend that with the input for more "heavy" sounds - the options are virtually endless - but what ever you choose works!


  • DRIVE: turning it clock wise increases compression, which is way more sensible than counter clock wise!
  • MAKEUP: variable control that adds up to 15 dB gain after the compressor section to correct for lost level
  • MIX: variable control that allows you to mix between the input signal and the compressor output (post the makeup control)
  • COMP IN: Push button switch to bypass or engage the compressor, (hard wire bypass)
  • BASS: Push button switch that engages a high-pass filter into the side chain to reduce the sensitivity of the compressor at low frequencies.=
  • METER G.R./O.P.: Push button switch to select the display on the VU meter of the amount of gain reduction or the output level
  • ATTACK: rotary switch with FAST (1mS) 25mS, 50mS selections plus our excellent AUTO mode
  • RELEASE: rotary switch selects recovery time of 100mS, 200mS, 400mS, 800mS, 1600mS and a superb AUTO mode
  • RATIO: rotary switch with 4 settings for depth of compression, 2:1, 5:1, 10:1, 20:1
  • There is also a handy power ON/OFF switch and a channel A/B LINK switch which soft links the sidechain circuit, useful when used on stereo mixes


  • The same compressor characteristic as the original SOC-1.1 but with additional features
  • DC version utilizes Buzz Audio BE41 discrete opamps
  • Smooth soft knee compression - does not dig holes in your tracks
  • Mix control for blending the uncompressed and compressed signal further enhances the ratio selections
  • Side chain high pass filter (bass mode) for more bass punch on full mixes
  • Boutique hand made with loving care in New Zealand
  • All high quality components and controls to last a life time

Product Specifications

Condition New
Unit Weight 9 lb
Channels Dual-Channel
Chassis 19-inch Rack-mount
Rack Spaces 2U
Compression Type Optical

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In almost 20 years in Pro audio buying, never did I receive a unit so well packed and exactly as described. Works flawlessly. The whole process has been so smooth. I will never hesitate to do business with you guys in the future and will recommend you to everyone I know.
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This was my first experience buying something from Vintage King (although I surf the "used" categories on the website frequently!), and, despite being on the other side of the world, I had absolutely no trouble and everything went very smoothly.
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The speed of delivery exceeded my expectations! I was VERY pleased that my shipment arrived in time for a scheduled vocal tracking session. The packing insured that my order arrived safely. And the sales staff responded quickly to questions regarding the product.
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