I have ProAc D30R’s driven by various nice ARC tube amps of roughly the same vintage as your Classic 30. (My amps are VT60, VT50, V70). I run a nice REL subwoofer to augment the low end. Listen to jazz and vocals mostly. The sound is wonderful. Saturated tonality, great sense of space, very organic, but still quick and impactful when needed.
I think a key to making this ARC amp work well with a solid state digital source is a tube linestage to ’round out’ and ’fatten’ the sound profile. I use nice CJ linestages to accomplish this - Premier 16 or ET5. The older CJ’s would do the same. The Classic series (my V70 is a close relative) errs on the side of sharpness and lean bass, while giving you wonderful transparency and sense of space.
Another thought is to look at the input and driver tubes in the Classic 30 - buy some old stock tubes which can play warmer tones and fatter bass than modern Russian tubes typically supplied by ARC (if that is what your amp came with).
If you were to mate ’warmer’ speakers to the Classic 30, I would think about Vandersteens, Spendors, Sonus Fabers, perhaps higher KEFs and Linns.
Good luck and take care.
I think a key to making this ARC amp work well with a solid state digital source is a tube linestage to ’round out’ and ’fatten’ the sound profile. I use nice CJ linestages to accomplish this - Premier 16 or ET5. The older CJ’s would do the same. The Classic series (my V70 is a close relative) errs on the side of sharpness and lean bass, while giving you wonderful transparency and sense of space.
Another thought is to look at the input and driver tubes in the Classic 30 - buy some old stock tubes which can play warmer tones and fatter bass than modern Russian tubes typically supplied by ARC (if that is what your amp came with).
If you were to mate ’warmer’ speakers to the Classic 30, I would think about Vandersteens, Spendors, Sonus Fabers, perhaps higher KEFs and Linns.
Good luck and take care.