The ZAM is both environmental-friendly and cost-effective, as it makes 9 volts batteries redundant and improves dramatically the sound of the instruments. It works smoothlessly on my electric bass, I am looking forward to plug it on my Naja set for bouble bass, which uses so many batteries that I almost reverted to the old system.

Thank you to the ZAM Team for bringing this welcome innovation.

Gérald Muller