Opinions on Esoteric clocks ......

I have added the GOR-b between the P-03 and D-03 after more than a year using the two alone. It is really hard to say what, specifically, it does, except that when you remove it the naturalness of the sound is diminished, and even superb CDs and SACDs become excellent digital sound again, not just excellent sound. I have heard from a very reliable source that the G03x has little positive effect between the P-03 and D-03, but is a substantial step forward when used with the P-05 and D-05. If, after my own experience, I were going to get a P-05/D-05 combo for a second system, I wouldn't even consider it without an Esoteric clock, the best I could afford.

Technically, this is all pretty much over my head. All I can comment on is what I hear. So I have to take issue with the comment above that "if there was a clock output from your P05 so you can feed D05 with it, you wouldn't need external clock because the benefit would be the same." Unless I misunderstand, this seems to be saying that if you can slave the transport's clock to the clock in the DAC, the result will be the same as with the external clock. (If I misunderstood, sorry.) When I ran the P03 and D03 by themselves, of course the P03 was slaved to the D03's clock. The very substantial improvement when the GOR-b was added was over the P03 slaved to the D03.