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 those controls low and your missed treble is back! Finally use the Volume (& Out) control to transport the shimmering music out into the world of ears.

• All original and handmade Himmelstrutz design. Not in any way based on early or later known creations
• Mechanical (true) bypass switching, ON indicated with a blue LED
• External controls: 'Under', 'Over', & 'Out' controls / Bass, Mid, Volume. (Bass, Mid +/- 7-9 dB)
• Internal controls: 1 'Top' (treble) trimmer (+/-7-9 dB)
• Power Consumption: 9 V DC/2 mA (= rich battery life). Battery included.
• AC Adapter (Optional): 5-18 V DC, center-pin negative (Straight plug, BOSS Standard connection, regulated power supply)
• Dimensions (L/W/H): 111,6/61,6/50,0 mm (4,37/2,4/1,9 In)
• Weight: 450 grams (0,99 lbs)
• Colour, finish: May vary depending on season and reason. December 2010-2012: 'Stockholm White' (RAL 9010)

Even if Under Over sounds great by itself it also works well with all other Himmelstrutz pedals—stacked in whatever order you prefer.