The URS 1975 Classic Compressor digitally recreates of a transformer input and voltage controlled gain reduction amplifier (VCA) characteristics. Warm and aggressive! High Res 48 bit "Double Precision" processing The URS 1975 Classic Compressor TDM version features Hi Resolution 48-bit TDM and 64-bit RTAS "Double Precision" processing for increased clarity, headroom and unparalleled gain reduction. Hi Resolution "Double Precision" processing helps to avoid internal clipping in the Digital Domain. Adjustable Knee Control The Compressor’s Knee is fully adjustable from hard to soft. The Compressor/Limiter/Side Chain version has adjustable knee as well. This allows for: soft compression and soft knee limiting.soft compression and hard knee limiting.hard compression and hard knee limiting.hard compression and soft knee limiting. Independent Compressor and Limiter Sections The Compressor and Limiter sections are totally independent of each other. Both feature separate variable Attack, Release and Threshold controls. Built in Internal Side Chain Filtering The Internal Side Chain High and Low Pass Filters fine tune how narrow or "Broad Band" the URS 1975 Classic Compressor will affect the program material. Both Filters completely overlap to dial in problem frequencies. Listen Key The Listen Key is after the Filters section. The Listen Key allows you to monitor the signal being sent to the Gain Reduction detection circuit. Signal Flow Explained The URS 1975 Classic Compressor signal flow inserts the Gain Makeup control before the final Limiter. This is the secret to how hard you can hit the final "Brick Wall" Limiter. The URS Classic Compressor utilizes Feed-back gain sensing. Feed-back gain sensing gives Compression and Limiting a servo type of control. See the detailed signal flow diagram below. Classic Sound with Modern Features The URS 1975 Classic Compressor adds other powerful modern features such as totally variable Compression Ratios, Attack and Release times. Two Different Plug-ins Two different URS 1975 Classic Compressor plug-ins are included: Compressor/Limiter/Side Chain versionCompressor only version The 1975 Compressor/Limiter/Side chain version has a modern "Brick Wall Limiter that was not found on the vintage unit. The 1975 Compressor /Limiter / Side chain version is also well suited for drum Sub groups, Aux sends (TDM versions) and highly recommended especially on the Mix Bus. The 1975 Compressor only version is also 3x more DSP efficient. The 1975 Compressor Only version will act as a Limiter when the ratio is set at 10:1 and above. Main Features: Compressor and separate "Brick Wall" LimiterInternal Side Chain with High and Low Pass FilteringAdjustable Knee control from hard to softStereo, Mono and Multi-MonoHigh Res 48 bit Double Precision TDM processingHigh Res 64 bit Double Precision Native processingThe URS 1975 Classic Compressor digitally recreates a popular feed forward 1975 VCA Compressor.Pro Tools 7.4.x and Leopard OSX 10.5.x compatibilityPro Tools 7.x.x and Tiger OSX 10.4.x compatibilityPro Tools 6.9.2 and Tiger OSX 10.4.x compatibilityPro Tools 6.9.2 and Panther OSX 10.3.9 compatibilityPro Tools 6.7 and Panther OSX 10.3.9 compatibilityPro Tools 6.2.3 and Jaguar 10.2.8 compatibilityPro Tools 7.x.x M-Powered version compatibilityFull Windows XP support!Full Pro Tools TDM support for Pro Tools|HD Accel, Pro Tools|HD and Pro Tools 24|MIX systemsFull 192 kHz support for TDM, RTAS and AudioSuite versionsFull ProControl, Control|24, Command|8 and Digi 002 supportFull ICON Console Control Surface support — including center section Dynamics panelSupports Mbox, Digi 001, Digi 002, Digi 002 Rack, Pro Tools|24 MIX, Pro Tools|HD and Pro Tools|HD Accel and M-AudioInterfaces.Audio Units support for Logic Pro 8.x thru 6.x, Digital Performer 6.x thru 4.x, Bias Peak 6.x thru 4.x, Abelton Live 7.x through 6.x, Final Cut Pro and more!VST support for Mac and PC Cubase, Nuendo, Sonar, Abelton Live, Acid, Sound Forge, Reaper, Wavelab, Bias Peak and more! Specifications: Input LevelGain Make up Output ControlSeparate Limiter and Compressor Threshold controlsVariable Limiter KneeVariable Limiter Attack Time 1ms - 50ms.Variable Limiter Release Time 50ms - 1500ms"Brick Wall" Limiter Ratio fixed at 1000:1Variable Compressor KneeVariable Compressor Attack Time 1ms - 50ms.Variable Compressor Release Time 100ms - 1500ms.Selectable Compressor Ratio 1:1, 2:1, 3:1, 4:1. 6:1, 8:1, 10:1, 20:1. InfinityVariable Hi-pass Filter Side chain @ 12dB per Octave 20hz to 5KVariable Lo-pass Filter Side chain @ 12dB per Octave 20Khz to 1kExternal Side Capability for ProTools TDM systems and other Host Applications where supportedGain Reduction MeterIn / Out Bypass switch - selectable Limiter, Compressor or bothLine input Trim offers -10 to +20 gain variable to .1dbPlasma Style Input and Output VU MetersCompressor/Limiter/Sidechain Instances- 9 per HD Accel chip and 4 Instances per HD chip and 2 per MIX chipCompressor only Instances - 17 per HD Accel chip and 8 Instances per HD chip and 4 per MIX chip Registration InformationSerial Number
