Ultratone E.Q. is the result of my collaboration with Piero Quintana, the man behind the excellent Quintana Dead Blues eXperience(https://www.pieroquintana.com/).
Part of our goal was to boost its characteristic fuzz without altering its personality.
The validated solution: an active equalizer to sculpt the frequency response of the incoming signal.
In addition to being able to give more punch to the bass and/or treble, Ultratone E.Q. allows for targeted emphasis of a frequency band, with the effect at the edges of the band being controllable for a smoother or more abrupt rendition.
In more technical terms, we have a high pass filter, a low pass filter and a configurable band pass filter. These filters are active, they do not rely on frequency attenuation (passive) but on their amplification.
Internally the amplifier operates at 18 volts, which provides a large headroom to avoid distortion.
This pedal is ideal for boosting breaks and solos while remaining transparent. It is also a perfect effect to add to a vintage fuzz that is full of gain but lacks volume (I personally use it happily after a Univox Superfuzz).