Futterman H3a OTL amp for sale seen on on eBay!

Just saw a Julius Futterman H3a power amp listed for sale on eBay today. Great piece of audio history to own !

rdiiorio04-10-2020 5:56pm

noromance Details Discussions Posts This discussion Message User 9,404 posts 04-15-2020 at 01:42am Copy Comment URL Report Comment Edit Delete Don't they have a reputation for taking out tubes and worse?
noromance Details Discussions Posts This discussion Message User 9,404 posts 04-18-2020 at 02:26pm Copy Comment URL Report Comment Edit Delete Early ones had stability issues. http://www.atma-sphere.com/Resources/OTLs_Defined.php Reading more, it seems JF improved the circuit and fixed the issue.