Use these free AU Plugins in Logic and Audio Unit host apps to add effects to your audio.
Another great thing about these plug-ins is how easy they are to install. All you have to do is open the .dmg and drag the mda.component file into the /Library/Audio/Plug-ins/Components/ folder (and remove any previously installed mda Audio Units in that folder). Once you do that, you're ready to start using the 14 different plugins included in the package.
Each of these plugins offers something unique, but a few really stood out to me. The Combo plug-in, for example, is a great amp and speaker simulator that really captures the authentic sound of a guitar amp. The Re-Psycho! plugin is another favorite of mine, and I've been using it to change the pitch on drum loops with excellent results.
I also appreciated the range of different effects on offer, from simple pitch-shifters to more complex vocoders and oscillators. Overall, if you're looking for a versatile set of effects plug-ins that won't break the bank, I would definitely recommend giving these a try.
Version 1.0.2: N/A