The Final Booster is a full-range booster that can provide +20dB of boost. It will not degrade the highs and lows of your guitar signal when the effect is turned on and will provide a natural sounding boost without affecting the original tonal characteristics of your guitar or bass. The HTS circuit is also built-in to preserve the sound quality whether the effect is turned on or off.
The Final Booster does not reverse phase when the boost is turned on. Although it is not known widely, boosters that employ a single-transistor or FET circuit cause a phase reversal when switched on, and this can cause the sound to drop in level or result in phase cancellation. The Final Booster does not have this problem.