I also have some Bybee iQSEs (2 inside my Cary CD303/300 + 2 below my Cary 300SEI) and two QSEs on my fuse box. The MC 0.5 was a worthwhile tweak that removed another layer of noise (without making the sound more analytical), even though I have an Audience power condition, albeit an old prototype model. My MC 0.5 is plugged into a Furutech NCF duplex outlet which is also effective in removing noise.
An acquaintance has 6 MC 0.5s and brought 4 over to hear what further improvement they would make. While the improvement with all 6 was major in his system (which is much higher-end than mine) the effect was relatively minor on mine. Currently, the main bottleneck in my system is the old power conditioner which limits the performance of everything else.
So in summary, the optimum number of MC 0.5s is going to vary from system to system. Fortunately, HFC along with most dealers offer a trial period so you can determine how many are optimal for you. Another tweak I can highly recommend is the Furutech destat iii and/or the IsoTek Full System Enhancer CD to maintain optimum performance.
An acquaintance has 6 MC 0.5s and brought 4 over to hear what further improvement they would make. While the improvement with all 6 was major in his system (which is much higher-end than mine) the effect was relatively minor on mine. Currently, the main bottleneck in my system is the old power conditioner which limits the performance of everything else.
So in summary, the optimum number of MC 0.5s is going to vary from system to system. Fortunately, HFC along with most dealers offer a trial period so you can determine how many are optimal for you. Another tweak I can highly recommend is the Furutech destat iii and/or the IsoTek Full System Enhancer CD to maintain optimum performance.