"Unfortunately, I never tried C&C BH with HD600, I can assume it would offer quite an expansive soundstage, a natural trait of BH amp, however from a power perspective I cannot say for certain, sound will definitely come out. and it may drive them fine on high gain. I do have HD600 here with me atm actually and they can be driven from something like JDS C5 or Tralucent's T1, those amps cost a little more than $100 with T1 coming in around $250.
I'm quite surprised at your soundstage comments with an ER4 and DX50 headphone out, if anything from my experience both are quite lacking in soundstage width, it is well known an ER4 (which I own) has hardly any staging, however again if you're finding it suitable why worry about an amp upgrade?
The problems with DX50 headphone out is it lacks soundstage width in comparison to many players I've heard and the instrument separation is weak, what this does is cause congestion and smearing in the mid-range, especially with faster or busy tracks. Next time you listen to your DX50 from headphone out, listen how easily you can pick out background samples or backup singers, (guitars, piano, vocalists etc) throughout the chorus for example of a busy track, you may think it's ok in the way of coherency though I promise you it can be much better. Now depending what you've heard you may not agree, but I can assure you players like Studio V 3rd Anv, Colorfly C3, Rocco BA express superiority in those technical areas without too much trouble, that's where my problem lies with DX50 HO.
Apart from those areas mentioned I don't really have an issue with headphone out, detail is there, resolution is fine, I simply cannot stand the congestion and narrow stereo imaging but again I'm comparing to other players I'm accustom too. To put it bluntly I have an IEM called RDB Mini, it has a wonderful wide soundstage, I know this because I've heard it with players like Studio V 3rd Anv, little Colorfly C3 though why when I put it with DX50 does it suffer and become narrow? To me that's subtracting from the IEM's potential.
Therefore I add the T1 and try to improve those areas much as possible."
Edited by olddude - 5/5/14 at 6:13am
Yeah, what he said. Except I use the C5