Altiverb 5 offers an extensive set of parameters, it supports all plug-in formats on the Mac, parameter automation and surround. Altiverb 5 gives you a choice between iLok SmartKey or Challenge/response copy protection, and it lets you sample your own spaces. Audio Ease also releases free impulse responses every few weeks for Altiverb users.

Supported Mac OS X Plug-in formats : HTDM, VST, MAS, RTAS, AudioUnit and added in Altiverb 5: AudioSuite.

Changes in this version include:
iLok authorization, or challenge/response
New Stage Positioning control allows you to place your source sound anywhere on stage.
Four band EQ, taylored for reverb.
Internal level meters
I/O controlls for front, rear, center bleed and lfe channels.
Separate Gains and Delays for Direct, Early Ref and Tail
Extensive CPU load control
Room Size shifts room modes and resonances.
Reverse reverb mode.
Internal test samples can be triggered from the Mac's keyboard.
VR movies, pictures, statistics, mic layouts etc, in the info screen.
Automatable preset switching.
Built in presets, user presets.
Impulse Responses in unlimited levels.
Three band damping

For more information, visit their web site at www.audioease.com.