Amazon.com: TC Electronic SUB 'N' UP MINI OCTAVER Compact Version of Hugely Popular Sub 'N' Up Octaver with Advanced Polyponic Octave Engine and TonePrint-Enabled Technology for Easy Custom Effects : Musical Instruments
MXR M225 Sub Machine Octave Fuzz Pedal | Sweetwater
Pedal - ASH-PFX-SUB-U – The Music Cart
Dunlop Slash Octave Fuzz Guitar Effects Pedal | Guitar Center
Sub Octave – FTelettronica Handmade Pedals
Foot Pedal Modular SUB C CXC I- : Brent | AMACO
TC Electronic Sub 'N' Up Octaver Dual Octave Pedal | Sweetwater
Amazon.com: TC Electronic SUB 'N' UP OCTAVER : Musical Instruments
Ashdown Compact Sub Harmonic Generator Effects Pedal Silver And Baby Blue : Target