Hello
Sounds impressive. I do own 988 and I would like to suggest, first - with capital F -
to look for good power cords (I have Cardas top of the line for that mission). The improvement is something you have to experience for yourself. As for interconnects I can recommend Silversmith, AudioQuest Cheetah, Transparent UltraLink & XLO top of the line, As for LS cable, try AudioQuest Montblanc & Analysis Plus Oval 9.
Looking for subwoofer for myself, and reading rave reviews about the Tbi; I would like to ask you about integration, placement, number (one? Two?) and associated components. What are the results that you've achieved (bass, dynamics?)
Thanks Yoel Pelerman