Since 2007, ZR Speaker Lab has been cooperating with Ground Zero. Four speakers in Plutonium-Reference line were developed, which are Plutonium GZPW Reference 18, Plutonium GZPM Reference 100, Plutonium GZPK Reference 180 and Plutonium GZPT Reference 25.

Descriptions of the products can be found on the official Ground Zero website:
www.ground-zero-audio.com



The speakers can be also bought on Amazon.