I own a 508.24 and used to use it with a 557/502 combo. I now use it with a ML 383. I do think that Meridian does try and create their products with synergy so they work well together. I base that on the fact that Meridian made a change to the first generation 557 amp to work a little better with their 502 pre.
With that said, I think the 508.24 will work fine with other brands. I don't think they do anything to the 508 to make it work with theirs and cause it to not work well with other brands.
With that said, I think the 508.24 will work fine with other brands. I don't think they do anything to the 508 to make it work with theirs and cause it to not work well with other brands.