These A2900 are branded Marconi and were made by the MO Valve Company in England. They all have balanced sections (do not select balanced sections when checking out as the only stock we have remaining have balanced sections.)It has wide, flat black plates and an amazing huge soundstage! These are the biggest and boldest sounding tube in the 12AT7 category, and are extremely low noise and low in microphonics.
$299.99 per tube. Limited supply.