Release your inner beast with the first realistic guitar feedback simulator on the market – the Softube Acoustic Feedback Plug-in. Go from moderate and subtle to rampant and wild by the twist of a knob (or two). To break new musical ground, try inputting a synthesizer, a violin, or even your mother's grand piano. Acoustic Feedback comes bundled with a stripped, but extremely useful, version of the White amp from Softube's Vintage Amp Room plug-in. (Due to some careless handling, only the Master Volume and Mic position controls remain intact. All other pots have been broken off. Or something like that...). NOTE: This software requires a Pace iLok USB key ("dongle") which can hold over 500 cross-platform software authorizations — all manageable via iLok's website. You can authorize software programs, plug-ins, features, and modules — even those published by multiple developers — without the burden of multiple keys. iLok also allows you to easily transfer authorizations from one computer to another without violating a software publisher's license agreement. Purchased separately; see product number 241800.