Sprague Atom Guitar Amp Capacitor, 50uF &ndash; 50V High Quality Electrolytic Capacitor. Considered By Many To Be The Best Electrolytic Money Can Buy Ideal For High End & Boutique Guitar Amplifiers 50uF  50V Electrolytic, Axial Leads, Polarized. Operating temperature -40C to +85C 50uF @ 50V - 0.31" D x 0.81" L