• For important technical information about each version, please see the Release Notes page.
  
  

• Enhanced reverb plug-in: UAD Plate 140 is now UAD EMT 140 with additional controls
• (4K Channel Strip) Minor Q control revisions now better reflect the reference hardware
• (FATSO Sr.) Minor Attack and Release control revisions now better reflect the reference hardware
• (Cooper Time Cube) Coils setting in automation now matches GUI value

• New EQ plug-ins: UAD Manley Massive Passive & Massive Passive Mastering
• New Precision Series plug-in: UAD Precision Enhancer Hz
• Firmware update resolves reboot and “Error 74” issues

• UAD-2 Driver enhancements significantly improve host CPU performance and address CPU spiking
• Resolved issue saving custom RTAS presets from within some UAD plug-ins

• Apple WaveBurner (v1.6.x) no longer crashes on quit
  
  

• New EQ plug-in: UAD Trident A-Range Classic Console EQ
• (EMT 250) New Noise parameter optionally eliminates modeled noise floor
• (EMT 250) Improved Wet/Dry slider mouse tracking
• (1176LN/SE) Added output dB labels for controls view and automation

• Mellowmuse ATA plug-in and manual are updated to version 1.4

• UAD-2 SOLO/Laptop now supports “Higher Performance” graphics mode
• Resolved Err -50, Not Responding, and Kernel Panic errors with UAD-2 Duo & Quad
• Resolved excessive UAD-2 unload times when quitting Logic Pro
• Resolved UAD-1e wake from sleep issue on some Mac Pro systems
• Fixed scrolling of horizontal controls which were previously reversed
  
  

(FATSO Jr./Sr.) Minor functional and sonic changes improve usability and emulation accuracy:

• All LEDs turn off when power disabled
• Ch 2 parameters default to OFF/"0" in mono instance
  
• Improvements to interaction between Compressor threshold and Tranny circuit
  
• Removed discontinuities in the saturation curve at clip level
  
• Copy+Paste settings from mono to stereo now working
• IMPORTANT: FATSO Jr./Sr. v5.4.1 session and preset settings are not backwards compatible with v5.4.0
  Please see the release notes for more information.

• New "Clear CPU Affinity" setting reduces CPU spiking on most multiprocessor systems (UAD-2 only)
  
  

• New EQ plug-ins: UAD Neve 31102 and 31102SE
• (UAD Meter) 1176SE no longer uses 1176LN RunOn setting in plug-ins tab
• (Fairchild) Automation is no longer overwritten when controls are linked
• (UAD 4K Channel Strip) Clicking "OFF" labels now disable HP and LP filters
• (Cooper Time Cube) Improved control resolution in lower ranges

• New special plug-ins: UAD EL7 FATSO Jr. and FATSO Sr.
• New reverb plug-in: UAD EMT 250

• (UAD-2) Reduced host loads on multiprocessor systems
• (UAD-2) Improved host CPU spiking/dropouts in Vista

• (AU) Removed Fairchild Mono Audio Units plug-in
• (VST) Mono(m) plug-ins no longer load on UAD-2 when RunOn is set to UAD-1
• (UAD-1) Resolved intermittent kernel panic on certain systems during driver install, driver load, or system wake

• Additional UAD RTAS presets
• Fixed issue with enabling Tempo Sync in CS-1, DM-1, and DM-1L
• Pasting 1176LN/SE or LA-2A settings via UAD preset menu no longer zeros parameter values
• (UAD-2) Latency is now 1x the hardware I/O buffer size instead of 2x
• (Mac) Pro Tools 8 no longer hangs using Precision Multiband on UAD-2
  
  

• New plug-in: UAD 4K Channel Strip
• New plug-in: UAD 4K Buss Compressor
• New plug-in: UAD Cooper Time Cube Mk II (UAD-2 only)
• Extra presets are included in installation
• Enhanced dialogs when loading authorizations
• (UAD Meter) Added key command for "Always On Top" mode
• (UAD Meter) Card disable button updates after scrolling in System Information tab
• (UAD Meter) Use Host Mode setting works properly in Cubase 4/Nuendo 4

• UAD buffer automatically configures to match audio hardware I/O setting
• Mono instances generally use less DSP
• Factory presets available in RTAS format
• (Mac) Fixed plug-in UI drawing issues under Mac OS 10.5 Leopard

• New firmware improves overall performance and stability
  
• RE-201 now sonically matches UAD-1 version
  
• Fixed "DSP Load Limit" error with multiple Cambridge EQ instantiations
  
• Fixed Precision EQ "DSP Limit Expired" error when DSP Load Lock is disabled
  
• Fixed intermittent audio corruption and system spiking with Precision De-Esser

• Plug-in subfolders are created when UAD presets saved with UAD Toolbar

• Authorization files can be dragged onto UAD Meter window
  
  

• New console EQ plug-ins: UAD Harrison 32C and 32C SE
• New phase utility plug-in: UAD Little Labs IBP
• Fixed issue with control values sometimes "jumping" in relative circular mode
• (RTAS) Includes Mellowmuse ATA automatic delay compensation plug-in
• (UAD-2) RTAS is fully supported
• (UAD-2) All UAD-1 Plug-Ins are now available for UAD-2
• (UAD-2) New Pro Tools Configuration window for UAD-2
• (UAD-2) All UAD-1 Plug-Ins are now available for UAD-2
• (UAD-2) New Pro Tools Configuration window in UAD Meter & Control Panel
  
• (UAD-2) Global bypass now releases DSP resources
  
• (UAD-2) Parameters updated properly after global bypass re-enable
  
• (UAD-2) Roland Dimension D sonics now match UAD-1
  
• (UAD-2) Neve 1081 sonics now match UAD-1
  
• (UAD-2) Plate 140 controls mode modulation parameters now active
  
• (UAD-2) Plate 140(m) no longer louder than UAD-1 equivalent
  
• (UAD-2) Precision Maximizer now outputs audio when Limit is enabled
  
• (UAD-2) UAD Meter & Control Panel prompts for authorization when needed

• File replace confirmation now appears saving presets via plug-in toolbar
  
• (UAD-2) VCA VU is now installed correctly
• (UAD-1) Authorization files can now be dragged to meter in Vista x64

• (UAD-2) Sleep support is implemented
  
• (AU) Scroll wheel control of parameters now updates hosts and automation
  
• (AU) AU plug-ins host load no longer higher than VST versions
  
• (AU) Plug-in bar paste settings now updates automation values
  
• (AU-Logic) Plug-in buffers (residual sounds) now cleared in Logic
  
• (AU-Logic) Reduced host load/CPU spikes in Logic with "live" tracks
  
  

• (UAD-1) New plug-ins: UAD Moog Filter & UAD Moog Filter SE
• (UAD-2) Resolved Plate 140 crash issues
• (Pultec) Resolved allocation errors under certain conditions
  

• (UAD-1) Resolved software version mismatch under certain conditions

• (UAD-2) Resolved system hang (spinning cursor) under certain conditions
  
  

• Support for the new UAD-2 product line
• New UAD Meter & Control Panel for UAD-1 and UAD-2
• New Plug-In Toolbar for UAD-1 and UAD-2
  
  

• New classic VCA compressor plug-in: UAD VCA VU
  
• New dynamic filter plug-in: UAD Precision Enhancer kHz
  
• (Prec. Buss Compressor) Display range of Gain Reduction Meter changed to -16.0db - 0.0dB
  
• (TrackAdv) Settings are now recalled properly on session load

• (UAD Meter) Authorizations window now accounts for Dock size
  
• (UAD Meter) Resolved crash when opening Authorizations window when driver not present or version mismatch

• Host no longer crashes when plug-in removed while demo dialog is still open
  
• Demo dialog no longer prevents CPU Load Limit dialog from appearing if both occur simultaneously
  
• (Samplitude) VST(m) plug-ins no longer cause crash
  
  

• New Precision Mastering Series Plug-In: UAD Precision Buss Compressor
  
• New Plug-In: UAD SPL Transient Designer
  
• (Precision series) Input metering (where applicable) is now post-input gain
  
• (Precision Limiter) Clicking on Hold/Type LED controls behaves properly
  
• (Precision Multiband) Improved meter color ranges are more suitable for peak metering
  
• (RE-201) Delay time displays now redraw if covered by another window
  
• (Plate 140/DreamVerb) Fixed BSOD/kernel panic that could occur under specific conditions
  
• (Ableton Live) VST(m) instance settings changes no longer affect second instance
  
  

• Fixed Sonar compatibility mode glitches in mixdown on multiprocessing systems
  
• Authorizations window now fits at 1024 x 768 display resolution
  
• UAD plug-ins no longer "hijack" keyboard commands in Pro Tools, Ableton Live, or Magix Samplitude
  
  

• New Precision Mastering Series Plug-In: UAD Precision Maximizer
  
• New Precision Mix Series Plug-In: UAD Precision De-Esser
  
• (Realverb Pro, ModFilter, Nigel) Eliminated fade-in at beginning of offline bounce
  
• (ModFilter) Renders no longer have silence in first 4096 samples

• System sleep is improved
  
  

• Support for UAD-Xpander

• Resolved kernel panic on wake from sleep after several sleep/wake cycles
  
• Resolved Precision Multiband playback glitch when used on track insert in Logic
  
• Multiple UAD-1 cards are supported in Magma chassis connected via ExpressCard
  
• Mac OS 10.4.10 is now correctly displayed in UAD-1 Meter System Information window

• UAD VST to RTAS Adapter is updated to version 2.11
  
• Resolved "err=3" issue that occurred on some systems
  
• New "Sonar compatibility mode" option improves Sonar performance
  
• Resolved Wavelab "serious error" issue that occurred on some systems
  
  

• New channel strip plug-in: UAD Neve 88RS
  
• New compressor plug-in: UAD LA-3A

• System sleep is now supported

• Resolved UAD-1 not responding in systems with greater than 2GB RAM
  
• Resolved installation issues on certain XP systems
  
• Microsoft Windows 2000 is no longer supported
  
  

• Resolved potential noise burst issue with UAD Helios Type 69

• Requires Mac OS X version 10.4 or higher

• Drivers are signed
  
• Plug-in demo dialog won't cause crash in certain hosts during plug-in scan
  
• (Vista) User Account Control can be enabled
  
• (Vista) UAD software does not require Administrator privileges
  
  

• Fixed intermittent crashes in various hosts when closing certain plug-in editors
  
• Modfilter/Phasor "Enable" parameter now correctly displays "Off/On" values in automation
  
• UAD RTAS Adapter v2 now requires Mac OS 10.4.x
  
• (Pro Tools 7, required for Adapter v2, requires Mac OS 10.4.x)
  
• (RTAS) CS-1 plug-ins once again load saved settings (PowerPC-only issue)
  
• (AU) Fixed Logic 7 AU Manager crash under OS 10.3.9
  
• (AU) DM-1L default settings now match VST default settings

• 64-bit driver support
  
  

• New equalizer plug-ins: UAD Neve 1081 and UAD Neve 1081SE
  
• Full "Touch Fader" automation support
  
• Single unified installer for all plug-in formats
  
• Includes Version 2 of UAD VST to RTAS Adapter from FXpansion

• Universal Binary for Intel-based Mac compatibility
  
  

• (33609SE) Optimized DSP

• (Plate 140) Clicking reverb time "+" button no longer crashes host
  
  

• New compressor plug-ins: UAD Neve 33609 & UAD Neve 33609SE

• 1176/Cambridge/DV/RV/DimD Controls no longer jump when GUI is opened over cursor position
  
  

• New equalizer plug-ins: UAD Neve 1073 & UAD Neve 1073SE
  
• (RE-201) Improved accuracy of displayed delay times
  
• (RTAS) Third instance of CS-1 no longer crashes Pro Tools

• Mac OS X version 10.3.9 or higher is required
  
• (AU/Logic) New Live Mode option for reduced latency in Logic (Logic v7.2.1 required)
  
• (AU/Logic) Support for importing Logic OS 9/Windows projects containing VST versions of UAD plug-ins (Logic v7.2.1 required)
  
  

• New Space Echo plug-in: UAD Roland RE-201
  
• (Precision Limiter) Added selectable meter type for full K-System compatibility
  
• (Precision Multiband) Resolved issue with level-dependent surge during bypass/enable
  
• (TremModEcho) ModDelay Sync no longer grays out when Echo type changed

• (AU) Controls changed via key up/down now correctly write to automation
  
• (AU) Resolved Digital Performer DSP allocation issue in multicard systems(AU)
  
• (AU) Resolved rare Digital Performer crash when opening sessions with plug-ins that support Tempo Sync
  
• Mac OS 10.2.x "Jaguar" is no longer supported
  
  

• New Precision Mastering Series plug-in: UAD Precision Multiband
  
• DMA enhancements improve non-realtime renders
  
• (Dimension D) Eliminated click when changing mode
  
• (ModDelay) Depth values over 170c are now recognized by text entry
  
• (DM-1/L, RS-1) Right Pan value no longer lost when saved with project

• Improved DMA engine provides more efficient PCI data transfer resulting in lower host CPU load
  
• UAD Driver Utility updated to eliminate errors under Mac OS 10.4.3

• DirectX is no longer supported
  
  

• New chorus plug-in: UAD Roland Dimension D
  
• Tempo Synchronization for CS-1 and Nigel family plug-ins
  
• (Precision Limiter) Fixed issue which could cause clicks on mixdown in certain hosts
  
• (Precision EQ) Presets are now saved correctly under all conditions
  
• (Fairchild) Cubase/Nuendo no longer crashes when read and write automation are simultaneously enabled
  
• (CS-1/DM-1/DM-1L) Mod type is now restored properly when set to Tri90 or Tri180 in session/preset
  
• (CS-1 family) Bank support and new default presets
  
• (Nigel family) New default presets
  
• (VST) Mono plug-ins are now installed into separate "Mono" subfolder

• Fixed drawing problem where knobs sometimes wouldn't draw if editor instantiated partly offscreen
  
• Installers are now distributed in .zip format
  
• Control-click ("select" click) on slider now sends current parameter value to host for automation
  
• (AU) UAD plug-ins now work correctly in Digital Performer when instantiated in mono-in/stereo-out configurations
  
• (AU) Fixed crash in Digital Performer when deleting/re-instantiating a plug-in with automation data present
  
• Mac OS 9 is no longer supported
  

• Optimized "Turbo DMA" engine provides full support for the latest multi-processor and multi-core systems, and enhanced performance with FireWire and USB audio interfaces
  
• Windows 98SE/ME is no longer supported
  
  

• New chorus plug-in: UAD Roland CE-1 Chorus Ensemble
  
• Reduced "UAD Not Responding" issues
  
• (Pultec/Pultec Pro) Reduced clicks/pops when enabling modules
  
• (Precision EQ) Reduced clicks/pops on initial band enable and power switch toggle

• (OS X) Support for Mac OS X 10.4 Tiger
  
• (G5) Reduced clicks/pops during export
  
• (AU) Resolved touch automation issues
  
• (AU) UAD DSP resources released during Logic Pro 7.1 bypass & freeze
  
• (AU) New bypass mode reduces CPU spikes/dropouts under Digital Performer
  
• (OS X-VST) Mono UAD plug-ins for cross-platform compatibility and complex routings
  
• (OS 9) Cycling certain plug-in presets no longer causes system freeze
  
  

• New Precision Mastering plug-in: UAD Precision Equalizer
  
  

• New reverb plug-in: UAD Plate 140
  
• Resolved control tracking issue introduced in version 3.6.0
  
• (Controls now switch values midway between positions again)
  
• (Precision Limiter) Fixed one sample offset in reported plug-in delay
  
• (DreamVerb) Pops/clicks when plug-in turned on has been eliminated
  
• (Pultec) Added factory presets
  
• (DelayComp/TrackAdv) Added preset support
  
  

• (DreamVerb) Resolved issue with loading presets created by certain VST hosts
  
• (OS X) AMD-8131 DMA mode is now auto-detected and changed if necessary
  
• (AU) Added support for saving VST presets
  
• (AU) UAD plug-ins pass current Apple AU validation tests with no warnings
  
• (MAS) Resolved DreamVerb issue with random noise bursts when automation enabled
  
• (G5) Improved multicard performance on systems without AMD-8131 controller (which as of this writing includes the dual 1.8GHz model M9454LL/A)
  
  

• New Precision Mastering plug-in: UAD Precision Limiter
  
• Improved knob control and resolution in Circular modes (including fine control with Shift key)
  
• Reduced host memory used by multiple instances of Fairchild
  
• Reduced plug-in file sizes for faster downloads and less hard disk usage
  
• Resolved UI anomaly in DreamVerb when Horseshoe 2 Shape Blend is at 100%

• (OS X) Added auto-unload of UAD plug-ins "orphaned" by forced quit, unexpected quit (crash), or improper cleanup by the host application
  (This was already being done in Windows and Mac OS 9)
  
• (AU) Parameters with only two states now display their textual values correctly in "generic" views and on external control surfaces
  
• (AU) UAD plug-ins pass current Apple AU validation tests
  
  

• Resolved "UAD Not Responding" error when RealVerb-Pro is used with Pultec-Pro
  
• Added input mute to RealVerb-Pro and DreamVerb to eliminate noise blasts caused by invalid inputs to the plug-ins
  
• Resolved issue with DreamVerb in mono-in/stereo-out mode (right channel predelay no longer set to 0)
  
• Resolved RTAS issue with UAD DelayComp ("Plug-ins" parameter now compensates for multiple plug-ins correctly)
  
• Improved DMA/interrupt handling to enable higher plug-in counts and/or lower host loads on some systems with multiple UAD cards
  
• Reduced system memory use (may resolve some card initialization errors, e.g. "No system memory resources", "MapRDRAM failed", etc. under Windows, and resolves potential issues initializing multiple cards under Mac OS X 10.2.x)

• (OS X) Reduced DSP load during bypass in most hosts
  
• (OS X) Text entry implemented
  
• (G5) Improved performance on G5 systems with multiple UAD cards (particularly with FireWire and USB interfaces)
  
• (AU) Keyboard shortcuts implemented
  
• (AU) Mono-in/stereo-out mode in Digital Performer reenabled
  
• (AU ) GUI meters now continue working if multiple instances of a plug-in are instantiated and one is removed
  
• (MAS) Fairchild settings now restore properly when session is reloaded
  
  

• Fixed Pultec-Pro and DreamVerb issues when running at 192kHz
  
• Fixed Dreamverb distortion when re-enabled
  
• Delay modules no longer slew when resuming

• Fixed Dreamverb effect bypass when re-enabled
  
• Mono-in/stereo-out has been disabled in MOTU Digital Performer to increase stability
  
  

• New vintage EQ plug-in: UAD Pultec-Pro
  
• Cambridge: Reduced CPU load of graphics redraw
  
• Fairchild: Improved Lat / Vert presets (#6-9)
  
• Fairchild: Added new presets

• Reduced host loads on G5 systems (all OS versions), and non-G5's running OS X 10.3
  
• (G5) Added AMD-8131 mode setting in UAD Meter
  
• (G5) Improved performance, particularly with FireWire & USB interfaces
  
• (G5) RealVerb Pro: Resolved dropouts with FireWire & USB interfaces
  
• (AU) Reverb tails now sound when transport stopped in Digital Performer
  
• (AU) Fixed Digital Performer crashes when removing plug-ins or changing screensets
  
• (AU) Cambridge: Resolved gain knob automation issue
  
  

• New compressor plug-ins: UAD Fairchild and UAD Fairchild Mono
  
  

• DreamVerb noise burst under certain conditions has been resolved
  
  

• Added support for AMD-8131 PCI-X chipsets (used on 64-bit Opteron and Mac G5 systems)
  
• DreamVerb now correctly releases CPU resources when bypassed via UAD Performance Meter
  
• Dreamverb right channel dry signal no longer missing in mono-in/stereo out configuration
  
• DelayComp bug when used with non-zero samples parameter on a send (or mono track/bus in Logic)

• Support for Mac OS X VST and Audio Units
  
• (VST9) "Live Mode Behavior" switch for Logic Audio

• Added support for Windows Server 2003
  
• Resolved host CPU loading issue introduced in 3.2.0
  
  

• New reverb plug-in: UAD DreamVerb
  
• New presets bundle (available as separate download)
  
• Fine control mode (shift+drag) with horizontal/vertical sliders now provides increased resolution

• Logic Audio issues no longer occur when UAD Powered Plug-Ins are used where their input is derived from any source in a "live mode". (Logic version 6.1.1 or higher required)
  
• (MAS) Control+click on A/B button in Cambridge EQ now behaves as described in manual

• UAD Meter "Invalid System Time" error under Win98/ME in timezones ahead of GMT
  
• UAD Meter "Card Not Available" error for some multiple card users
  
• Intermittent Windows 2K/XP Blue Screen error:"IRQL_NOT_LESS_OR_EQUAL"
  
• Improved stability when exiting host applications in Windows 98/ME
  
  

• New EQ plug-in: UAD Cambridge EQ
  
• UAD Cambridge has full-featured 14-day demo and replaces feature-limited version in 3.0
  
• New 1176SE "Special Edition" plug-in uses very little DSP
  
• UAD DSP load limiting avoids overloading host system
  
• LA2A and 1176LN use less DSP and also more accurately model the hardware with certain extreme settings and/or program material
  
• TrackAdv has new color to easily distinguish it from DelayComp
  
• Preflex Morph distortion under certain conditions has been fixed
  
• 1176LN Input knob in All Buttons mode is more accurate (may affect sessions and presets using extreme settings in this mode)
  
• Nigel ModDelay/Echo parameters are now properly recalled in Logic Audio
  
• DelayComp no longer causes noise and/or crashes in some hosts during parameter value changes
  
• Text entry now accepts "," in place of "." for European users
  

• Up to four UAD cards are supported with automatic load balancing
  
• New control modes: circular (jump), relative circular (grab), and linear (slider)
  
• New UAD Meter Configuration window
  
• Plug-in latency is displayed in System Information window
  
• RealVerb Materials and Shape parameters now accept text entry

• (DX) UAD plug-ins have significantly less host CPU load
  
• Drivers now load after reboot when multiple cards installed on some Win2K/XP systems
  
• (DX) Offline processing no longer truncates end of selected region in most hosts
  
• (DX) Offline Processing no longer results in right channel silence
  
• (DX) Additional Pultec delay is now compensated correctly
  
• Miscellaneous installer fixes
  
  

• Unnecessary error messages (err=3, err=29, etc) have been eliminated
  
• Logic 4.x no longer crashes when mono plug-ins are loaded
  
• Preflex output is now consistent at all sample rates
  
• Nigel Tremolo module no longer changes mode when Preflex Morph is used
  
• Installer and uninstaller have been improved
  

• UAD Meter no longer causes audio dropouts on some systems
  
• Fixed problems opening/closing mono plug-in editors during automation playback
  
• UAD plug-ins now use the host knob mode setting
  

• (DX) Improved DirectX support
  
• (DX) Added support for additional DirectX host applications, including: Sonic Foundry Sound Forge, Acid, and Vegas
  
• (DX) Many DirectX issues have been resolved
  
  

• New EQ plug-in: UAD Cambridge Demo
  
• Mono versions of UAD plug-ins for Logic Audio
  
• UAD Track Advance plug-in aligns UAD processed audio tracks with MIDI tracks
  
• Bypassing UAD plug-ins now releases DSP resources
  
• New Samples parameter in DelayComp and TrackAdv facilitates Pultec compensation
  
• Direct text entry of parameter values
  
• New keyboard shortcuts to reset and toggle between saved and edited values
  
• Up to 32-bit, 192kHz resolution for all UAD plug-ins
  
• Graphics resource sharing significantly reduces host memory usage and download size
  
• UAD plug-ins now display information messages if errors occur
  
• Overall stability is improved
  
• ModFilter gain no longer drops when knob touched in highpass mode
  
• Echo Recirculate parameter is now stored when set to Infinite
  
• LA2A output no longer muted after Bypass>Suspend>Enable
  
• LA2A/1176LN/Pultec processing now begins at start of audio
  
• 1176LN automation text now matches user interface text
  
• Fixed all issues related to 96kHz and higher sample rates
  
• UAD Meter no longer displays version mismatch on errors even if versions are correct
  
• UAD Meter now displays correct DSP load (under-reported loads are now reported)
  

• (MAS) ModDelay and Echo parameters in Nigel and TremModEcho are now saved

• Up to four UAD cards are supported with automatic load balancing
  
• (DX) DirectX support
  
• UAD CPU limiting disables UAD plug-ins instead of overloading host system
  
• Mouse scroll wheel support
  
• New control modes: circular (jump), relative circular (grab), and linear (slider)
  
• New UAD Meter includes enhanced System Information and Configuration windows
  
• UAD Meter now remembers ‘Always on top’ setting when reopened
  
• UAD Meter spacebar no longer activates plug-in disable button
  
• Wavelab no longer crashes when quit under Windows 98/Me
  
  

• (VST9) Support for Dual Processor systems
• Improved driver stability and reduced interrupt latency
  
• Improved performance with certain I/O devices (including M-Audio)
  
• Driver loads much faster during system startup
  
• (MAS) Fixed spurious "Ran out of record buffers" and similar errors
  
  

• (MAS) Support for Dual Processor systems
  
• (MAS) Erratic knob movement when adjusting knobs in certain Nigel modules when automation is enabled has been fixed
  
• (MAS) Excessive host CPU usage in some UAD plug-ins when automation is enabled has been fixed
  
  

• Added support for Emagic Logic Control
  
• The Echo wet/dry "Mix" control within Nigel and TremModEcho has been modified to provide increased sensitivity around zero and +/- 100%.
  (Note: On existing projects, the shape of the automation curves for the mix control will be modified slightly)
  
• UAD Pultec reset problems have been fixed
  
• Nigel/TremModEcho recirculation parameter automation problem has been fixed
  
• Pops/clicks when starting playback in Logic Audio have been fixed
  

• (VST9) UI graphic offset under certain hosts (ie Opcode Vision) problem has been fixed
  
• (VST9) Fixed a problem that could cause clicks during playback or bounce under certain rare conditions
  
  

• (MAS) Support for Mac OS 9 MAS platform
  
  

• New EQ plug-in: UAD Pultec EQP-1A Program Equalizer
  
• New Nigel Mod Filter mode: Non-switched Wah
  
  

• Intermittent distortion problem when bouncing to disk has been fixed
  
• Intermittent noise bursts have been fixed
  
• LA-2A distortion in low frequency signals at low signal levels has been fixed
  
  

• Nigel advanced guitar processor which includes 7 new plug-ins:
  UAD Nigel
  UAD Preflex
  UAD Gate/Compressor
  UAD Mod Filter
  UAD Phasor
  UAD Tremolo
  UAD Trem/Mod/Echo
  
• Reduced PCI bus latency
  
• Mixdown click problem has been fixed
  
• Buffer size mismatch problem has been addressed by Steinberg and fixed in Nuendo 1.5.3

• (VST9) Support for Mac OS 9 VST platform
  
  

• Advanced Multi-Processing support
  
• Nuendo in-place processing support
  
• Latency has been optimized and reduced by 128 samples per plug-in, enabling a minimum latency of 128 samples per plug-in
  
• New UAD Performance Meter options enable fine tuning of UAD configuration parameters including large ASIO buffer size support for Steinberg users. These may also provide greater compatibility with other VST host applications and DirectX systems using the Fxpansion VST adapter
  
• Deactivation switch in UAD Performance Meter enables temporary disabling of all active Powered Plug-Ins
  
• New EX-1M plug-in is a monophonic version of EX-1 that enables independent left and right EQ settings in master effects chains and allows Logic Audio users to conserve UAD DSP resources
  
• New DM-1L plug-in is the DM-1 with available delay times of up to 2400 milliseconds per channel includes a right-delay and left-delay line Ratio Link switch
  
• New UAD Delay Compensator plug-in allows simplified latency compensation
  
• VST host knob mode support for circular, relative circular, and linear parameter changes
  
• Dialog box provides specific information when plug-ins fail to load under certain conditions, such as UAD out of memory, mismatched sample rates, mismatched buffer sizes, or plug-ins in use by another application
  
• All-new installer minimizes user intervention required on the various Windows platforms
  
• Async Distortion problem has been fixed
  
• CPU host load has been optimized
  
• Vintage compressor no longer clicks at start of audio regions in Logic Audio
  
• Vintage compressors 96K operation problems fixed
  
• Fixed Cubase hang problem on session open/close with stereo Powered Plug-Ins (Disable/Enable Audio workaround for Cubase users should no longer be necessary)
  
• Fixed Cubase hang problem on file audition in sessions with stereo Powered Plug-Ins
  
• When insert effects are deactivated with the UAD Performance Meter disable switch, audio is no longer delayed.
  
• When master effects are deactivated with the UAD Performance Meter disable switch, audio is no longer muted.
  
• DM-1 disable switch no longer disables multiple instances
  
• Small one pixel black dots following some knobs and meters have been cleaned up
  
• CS-1 title panel eliminated; its presets panel is now visible at 1024x768 within Logic
  
• Title panels have been modified and now use less screen real estate
  
• RealVerb Pro presets names are now displayed correctly
• Full support of Windows 98/ME/2000/XP operating systems
  
• Wavelab 3.0 support
  
• Windows 2000/XP plug-and-play errors fixed