INV 2717 The TC Electronic Sub 'n' Up Bypass Guitar Pedal is a versatile and powerful octave pedal designed for both guitar and bass. Here are some key features: Polyphonic Octave Engine: Offers flawless polyphonic tracking for complex chords and fast runs. Monophonic Octaver: Replicates classic monophonic octave tones for that old-school vibe. TonePrint Technology: Allows you to beam custom-made tones into the pedal via the free TonePrint app. Controls: Includes Dry (volume/blend), Up (octave up), Sub (octave down), and Sub 2 (two octaves down) controls. Mini Toggle Switch: Offers three modes: Poly for polyphonic tracking, TonePrint for custom presets, and Classic for monophonic tones. True Bypass: Ensures the cleanest tone with zero high-end loss when the pedal is off. Optional Buffered Bypass: Prevents high-frequency loss from long cable runs. This pedal is perfect for adding depth and richness to your sound.