For Sale a pair (2) Dynaco Mark 3 in good conditions. Original circuit and 6550 Sylvania USA output tubes with good emission. 60w of pure tube 117v voltage usa. The item "Dynaco Mark 3 Tube Mono Blocks" is in sale since Thursday, November 18, 2021.This item is in the category "Consumer Electronics\Vintage Electronics\Vintage Audio & Video\Vintage Amplifiers & Tube Amps". The seller is "tubefive" and is located in Málaga. This item can be shipped worldwide.