I had a DK design MK I and found the bass "slam" lacking compared to some other amps. Was using silver speaker bi-amp wires. Took amp to local Hi-End shop and compared
au24 and Analysis plus copper cables; both had better "bass slam" than my silver cables. Total ultimate bass about the same but "hit" with copper very different. AnalysisPlus power cord improved bass also. Ultimately sold amp and kept silver speaker cables for use with my 4watt Almarro amp which has bass I prefer over DK. Best Wishes, Mike. (PS, Do borrow some other power cords, IC, speaker cables before you buy expensive items to "correct" bass problem.