Native Instruments today announced that NI-Spektral Delay, its unique effects processor, is now available for Mac OS X. The new version of NI-Spektral Delay fully supports the modern technologies and interfaces of Mac OS X, including AudioUnits, RTAS, VST and standalone operation with CoreMIDI and CoreAudio. NI-Spektral Delay 1.5.5 is immediately available to all registered users as a US$29 download.