The team's opinion: The Quebec brand Solidgold Fx offers original products of exceptional quality. The sparkling finish of the Jfet Booster perfectly underlines the main characteristic of this pedal: Raising the level of your amplifier while bringing a "sparkling" side to your treble. To put it simply, the latter is a rather transparent boost that will allow you to push your amp while maintaining its characteristics. However, the Jfet Booster is intended for solo guitarists wishing to bring a little "air" to their sound. You know these frequencies located between 2khz and 3khz and which help to pierce the mix. Badly dosed, this range of frequencies can quickly become painful. But the Canadian team masters its subject perfectly, and the treble is ideally gauged. A very good reference, presented here in new condition!