Stone Vintage Radio Museum - Antique Radios, Wireless, Crystal Sets, Tubes, and Valves

Here is a 300B amplifier that I made. It uses a pair of Western Electric 300B tubes as well as a pair of 6SN7 tubes and a 5U4 rectifier. The output transformers are made by NP Acoustic (http://npacoustic.com/) in Viet Nam. I read several good reports on these 3.5K output transformers and am very pleased with them. I am still testing to see which 6SN7 sounds best. I made the base from the ash tree. It delivers about 7 watts of single ended power.

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