Hop on under OVER to beam your solo at least one dimension further—push your amp into the land of magic. under OVER adds air to your music, makes it breath. With the Bass (under) control your preferred amount of low end is added. Or reduced. The Mid (OVER) control sets the critical midrange. Set both controls low and you've got a treble booster. Finally use the Volume (& Out) control to transport the shimmering music to your amp—out into the world of ears.

• Mechanical (true) bypass switching, ON indicated with a blue LED
• External controls: 'Under', 'Over', & 'Out' controls / Bass, Mid, Volume. (Bass, Mid +/- 9 dB)
• Internal controls: 1 'Top' (treble) trimmer (+/- 9 dB)
• Power Consumption: 9VDC/2 mA (= rich battery life)
• AC Adapter (Optional): 5-18 VDC, center-pin negative (BOSS Standard, regulated)
• Colour, finish: May vary depending on season and reason. February 2010: 'Stockholm White'

Even if under OVER sounds great by itself he also works very well in company with miss nutCRACKer, GRAMPS+ and any of the FETTO pedals—stacked in whatever order or style you prefer. Here