25-04-2016, 03:19 PM
I did become suspicious that one of the EL34s has started slowly leaking. The output from one channel has a lot of rumble on it.
I can swap the valves around to prove that is the problem and then test one channel at a time before ordering a set of new valves.
A matched set of four valves costs about £30.
http://uk.rs-online.com/web/p/double-tri...s/6784111/
I can swap the valves around to prove that is the problem and then test one channel at a time before ordering a set of new valves.
A matched set of four valves costs about £30.
http://uk.rs-online.com/web/p/double-tri...s/6784111/
