I’ve had experience with two EL84 amps, both of which I’ve kept in the mix over the years. Vintage: Eico HF-81. Great midrange, hard to fault, except for low damping factor. My more powerful Anthem Integrated 1, with a quad of el84’s, has proved a sleeper. It’s paired well with Quad 57’s (the Eico not so much). Because it’s really good with every speaker I’ve tried, I won’t get rid of it. Even when it caught fire due to a short on a JJ output tube (more tubes, more can go south). Should be fused, but no. Still worth the replaced resistors- back in service and sounding great with old Monitor Audio MA3’s . . .