The Garmy 600+ is a high-performance, research-grade potentiostat, galvanostat, and zero-resistance ammeter (ZRA) designed for fast, low-current measurements. The system can apply a maximum potential of ±11 V and perform electrochemical impedance spectroscopy measurements (EIS) between 10 µHz – 5 MHz. Applications include physical electrochemistry, fast cyclic voltammetry, and electrochemical investigation of noise, solid-liquid interfaces, semiconductor photo-electrochemistry, fuel cells, and batteries and capacitors.