2023 UPDATE: Best Ring Modulator Pedals - Compare Prices + Features | Delicious Audio
Boss MD-200 Modulation Pedal | Sweetwater
Red Panda Bitmap 2 Reduction and Modulation Pedal RPL-103V2 B&H
MAKO Series: M1 High-Fidelity Modulation Machine
Guitar Pedal X - GPX Blog - Jackson Audio's New Wave Modulator is an incredibly innovative and expansive 7 Mode Stereo Analog Chorus, Vibrato, Rotary and Harmonic Modulation Pedal