Amptweaker has long established themselves as being a go-to company for awesome amps as well as overdrive/distortion pedals. The Amptweaker SwirlPool is their first go at a modulation pedal. They went all out on this one – giving classic sine wave tremolo sounds all the way to rotary speaker sounds. There’s a lot of cool knobs that give the SwirlPool modulation sounds that are very unique to this pedal. Check it out!