The Sound of a Classic! The Vox V847-A wah pedal improves on the V847's popular design with increased dynamics and functionality, thanks to a few design changes. A redesigned inductor brings the new pedal's specs even closer to that of the original. and an added input buffer prevents impedance loading of the guitar signal to preserve your guitar's tone in bypass mode. By staying true to the tone and vibe of the 1960s-era Vox wah while enhancing its legacy, the V847-A offers you a modern update on a true classic. Vox V847-A Wah Pedal Features: - Classic Vox sound and styling - Redesigned inductor brings sound even closer to that of the original - Added input buffer prevents impedance loading of guitar signal to preserve guitar's tone in bypass mode - 9V power supply input for connection of AC adapter - Vox V847-A - As close to the original as you can get!