It's a booster. A circuit that amplifies the signal

UTILIZATION

One button. Any other questions?

SOUND QUALITY

That's exactly what I wanted: a pedal that gives a little more potato when the time has finally come solo!
Obviously, it does not react like the clean channel or saturated and how it is connected. I play on the tube amp.

In series
On the bright, it increases the volume.
In disto, it depends on the gain level: the lower it is, the greater the volume effect will be important. Also thicken the sound. on the other hand, if the gain of the amplifier is already high, the level difference is then rather low. It will only do more saturated the amplifier.

Loop effect

Whatever the channel, it amplifies the signal, whatever the gain already present without added distortion from Extra. Normal, except to play hard on the master of the amp, the power stage does not saturate.

I also tried a Fender transistor (an amp with lots of recent mail): there was not terrible. No effect of boost, just a little more gain. Not terrible.



OVERALL OPINION

I use it since this morning. We are already inseparable, it will follow me until my death or his.