Sophia Electric Coke-bottle KT88-ST Tubes (long life version)

This patented Sophia Electric coke-bottle KT88-ST (long life version) tube has the most refined sounding with best high frequency extension, a cure for the dark sounding KT88 amplifiers. We offer 2-weeks return policy net of shipping and $25 restocking fee per quad.

Positive Feedback Online Review: "The Sophia Coke Bottle KT88-ST's easily bested my modest collection of glass bottles. These tubes brought to my system clean and detailed high frequencies, round, dimensional, realistic midrange, and full, rich, and taut dynamic bass. This is a very coherent, highly musical tube." -- Francisco Duran