Just wondering, is there any difference between, say, an ABM 500 and an ABM 500 EVO? I'm assuming the EVO is just an updated version, and if so, does it have any noticeable advantages over the old ABM?
I think the EVO versions actually have a redesigned preamp section (or was that power amp?), better transformers and footswitches for the EQ/subharmonics. I'm sure I read it somewhere but I can't remember where....
Here's what Harmony-Central had to say "the new Ashdown ABM EVO amplifiers add a tuner mute LED to the front panel and a footswitching facility for the shape and EQ functions both in direct response to requests from Ashdown players. Under the skin, the preamplifier circuitry has been completely redesigned for "silent switching'" and a new custom transformer improves further on the Ashdown's already low noise specifications."