Rowland 8ti or Krell FPB600c

Having had experience just as Sound 4 me said, I heartily agree. My system was lacking a little-changed my speaker cable and now I think I have the best amp made. Since you do have one of the best amps made, I'd look at the rest of the chain. Good luck.

My system consists of model 2 amp, Bat Vk-30Se pre amp, Wadia 860X, Transparent Super XLR int + spk wires 3 Richard G, Harmonic Tech PRO AC-11 power cords, Power Snakes Cobra on the 860X. WOW! What an upgrade for my 860X.

I had HT cable on my wadia(good),switched to Mamba(light years better). i put the HT on the amp-did'nt work! Everything got kinda dark and a little muddy. I'd try another cord on your amp. I'd also try Analysis Plus speaker cable.

What is a good power cord for my Jeff Rowland model 2 power amp?

Only upgrade from a Rowland 8Ti would be to either add a battery pack or go for broke and get the Model 9Ti's. The 9's will add more width and depth to the soundstage, plus a lot more slam! Go for it! I did.