Sub 'N' Up Mini Octaver Effect Pedal. The TC Electronic pocket-sized pitch-shifting Sub ?N? Up Mini Octaver features the same state-of-the-art octave-engine found in it?s raved-about bigger brother for awesome octave sounds, including your choice of the amazing Sub ?N? Up TonePrint octave tones. Add to this pitch perfect accuracy, flawless polyphonic tracking, an authentic old-school monophonic algorithm?and you've got the impossibly small, penultimate octaver for your crowded pedalboard.