Quick view SOLD OUT KEELEY Keeley Electronics Hydra Stereo Reverb & Tremolo $249.00 Available now at Northeast Music Center! The new HYDRA is a high fidelity and true stereo Reverb and Tremolo. Designed to be the perfect end to ANY pedalboard, regardless of genre. Save up to 3 presets and dive deep into the HYDRA’s... Out of stock Add to Wish list Compare