A.R.T. LeVeLAr Professional Tube Compressor/Leveler in great shape. So sayeth lnlrecording.com: From the designers of the award winning Tube MP comes the latest in the Personal Processor Series of world class signal processing: The Levelar. The Levelar is a single channel leveling amplifier. Similar in design philosophy to the classic tube limiters, the Levelar utilizes a VCA-less design for premium performance. The Tube Compressor's design features electro-optical (Vactrol ®) and vacuum tube electronics, which delivers classic sound without the "old" noise. Ask any audio engineer what makes a great compressor/limiter and they will tell you - "sound". The classic pieces each had a sonic "flavor" that made them popular. One of the main complaints about many contemporary compressor and limiter designs is that they are "life-less" or "dull" sounding. This is primarily due to the action of the VCA (voltage controlled amplifier). Classic compressors and limiters had a "sound" that isn't available elsewhere. Tubes alone were not responsible for this sound, but rather the complete circuit design. The Tube Compressor from ART has characteristics reminiscent of these classic pieces, yet offers a "sound" you simply cannot get elsewhere. The Tube Compressor is as simple to use as a contemporary compressor. The primary difference is that it is used (as the classics are) to level out the signal as opposed to altering the complete dynamic range. The Tube Compressor offers both compression and limiting. Due to its very fast attack and release response times, the Tube Compressor provides the "classic" punchy and transparent characteristics of the "LA-" type levelers and offers a finely tuned auto setting which behaves like the classic stereo modules, providing a smooth, loud, and fat sound. For the latest in state-of-the-art tube compression and limiting, we invite you to pick up the next link in your signal processing chain with the ART Tube Compressor. Check one out at your nearest authorized ART dealer today. ® Vactrol is a registered trademark of EG&G Vactec Inc., St. Louis, MO, USA PRODUCT SPECS Dimensions: 5.25" D x 5.375" W x 2.0" H Weight: 1.5 lbs Input Impedance: 20k ohms (XLR), 1M ohm (1/4") Output Impedance: 600 ohms (XLR), 300 ohms (1/4") Maximum Input Level: +15dBm Maximum Output Level: +26dBm (XLR), +20dBm (1/4") Power Requirements: 9VAC @ 700mA Frequency Response: 10Hz to 20KHz (+/- 0.5dB) THD: <0.1% (typ) Equivalent Input Noise: -97dBm (1/4" to 1/4") Equivalent Input Noise: -99dBm (XLR to XLR) Slope: 2.3:1 (Compress), 6:1 (Limit) Maximum Attenuation: 28dB Controls: Threshold Controls: Active/Bypass Switch Controls: Compress/Limit Switch Auto/Fast Release Switch Controls: Output Level Control Connections: 1/4" Balanced Input Connections: XLR Balanced Input Connections: 1/4" Balanced Output Connections: XLR Balanced Output Connections: 9VAC Power Input PRODUCT FEATURES Single channel tube and Vactrol® based leveling amplifier Premium hand selected 12AX7A tube Musically transparent sound VCA-less tube and Vactrol® compression circuitry Adjustable threshold control Selectable attack and release characteristics Gain reduction LED meter ladder with threshold indicator Compression and Limiting options Variable output level control Balanced 1/4" and XLR inputs and outputs Extremely low noise AC-powered, All-steel construction Designed and manufactured in the USA $40 shipped.