The Electro-Harmonix 9-volt battery is of the classic carbon/zinc type and has a higher internal resistance than an alkaline battery. This reduces circuit loading, especially in vintage effects pedals, to provide the best tone and dynamics.
It's the type of battery that Eric Johnson uses in his fuzz faces and they sound warmer with this type compared to alkaline batteries.
It's the type of battery that Eric Johnson uses in his fuzz faces and they sound warmer with this type compared to alkaline batteries.