The Curveball is a 3 band EQ with dual Boost functions and can even be used as a clean channel preamp. The all-important Mid frequency is selectable using the Mid switch, to easily simulate 3 band passive EQs from classic US amplifiers, UK amplifiers, and the Thrash EQ setting puts the middle right in the sweet spot for metal. The Mid knob also boosts in a peaky way through that same frequency range, making this a great way to get great parked wah tones by boosting it. The Low knob boosts in a shelving way, but cuts more like a Tight control so you can further optimize the attack. The High EQ also boosts in a shelving way, but rolls off highs like a guitar tone control. This provides the most flexibility in tweaking your front end boost.The secondary boost feature is a great way to either make up for two different guitars or set up two different boost amounts. By pressing and holding the footswitch, the EQ is locked ON, and the secondary boost is primed and ready to go. Press the footswitch again and it gives you up to 10 dB of additional boost
Curveball - Demo by Amptweaker