It appears the original Solen caps were a partial bottleneck in hindsight.These speakers are exceptionally good in standard form. The CAST reveal the flaws of the previous cap quite bluntly however.As others have pointed out,tone is fabulous! What I`m noticing though is the improved dynamics. Contrast,ebb and flow,gradiations and subtle inflections are much improved.There`s a sense of better color,vividness which yields more emotional involvement.To summarized, there`s a greater sense of life and reality, more music and less stereo hifi(if that makes any sense).If you like your current speakers, the Duelund upgrade is actually a bargain.They are expensive but the increased music reproduction is significant,thus a high value return. You could buy new speakers and may not like them as much as your current speaker with the Duelund CAST capacitors.
Regards,