SPANISH BOMB! Granada is a Silicon booster based on the vintage tone from the old Rangemaster units. It comes equipped with all NOS components, AB comp carbon resistors and ceramic capacitors. (Erie and RMC) This units used the ME4003 transistors or OC44. The germanium transistor option is point-to-point mounted The booster to bring out a tone, from soft and harmoniou tone to aggressive and distorted sound. The main finish is in hammered gold with an artistic stamp of a pomegranate, typical of the city of Granada, hence its name SPECS The GRX can be powered by either 9V batteries or power supplies. It uses 2.1 boss type barrels, with negative center, and to avoid noise and leaks, it uses an Isolda power supply. if you don't use an isolated power supply, this noise/oscillation could leak to the other pedals even when the pedal is off. please avoid the daisy chain.