Giannis Spathopoulos made this one-off treasure audio power amp. This prototype model featuring four JJ EL34 power output pentodes per channel in an ultra linear push pull configuration. With an ECC83 as a pre stage, an ECC85 as a phase splitter, and a 6FQ7 as a buffer, this extremely dynamic and sweet sounding design is rated at 30 Watt in a class A configuration, and 70W in a class AB1 configuration.