I've tried the 627X for a while now with my "iPod Classic + CLAS -dB + 627X + FitEar ToGo 334/AKG K3003"-rig and it sounds better than my two other AMPs (TTVJ Slim, ALO Rx-MK3-B). The soundstage is wider and deeper, the bass has a bit more authority but is still very well controlled, the separation and individual characteristics of instruments is more defined, and most importantly it is virtually (99.5 %) black with the extremely sensitive (and I repeat), extremely sensitive FitEar ToGo 334. In comparison the ALO Rx-MK3-B is a "hissing hell".
Hi guys, is there anyone who have the portaphile 627/x and the RX-Mk3B or SR-71B and compared the performance with the balanced function of the latter 2 amps?
To Aero Dynamik: was your above comparison using the single-ended or balanced mode of the Mk3b?
The reason I am asking is I have the Clas -db/SR-71B fully balanced in/out and am seeking to try out a different amp. I have been reading rave reviews of amps like this portaphile, the Bialbero Epsilon S, etc. But I can't seem to find any comparison to the balanced operation of the Mk3b or the Sr71B.
Just a light hearted comment here, does anyone notice that with each new amp debut, it seems the feedback from users usually are: better separation, wider soundstage, etc in comparison to the previous generation amps. By now it would seem the latest amps have a soundstage the size of a basketball court or stadium compared to amps from 7-10 years ago :) These are just my thoughts when reading the reviews in general, not only in this thread, nothing personal.
Balanced mode, and I feel the 627X (single ended mode) is the better AMP. Actually, balanced doesn't do anything for me, and I tried to start a thread about it here, but the response was practically nonexistent.
Well, in my case it might have been imagination, but in comparison to my iPod Touch generation 4 (which I think I was comparing to with out mentioning it), I feel it's a fact. Right now my appreciation of the 627X boils down to its ability to tame some of the edges that I hear when listening to not so great pop/rock recordings with my otherwise absolute favorite headphone (any type) the AKG K3003. Also, more than anything I appreciate the mids of the 627X, especially female voices through the AKG K3003. Very realistic, organic feeling.
I should add that in general I find the effect of separate AMP/DACs to minimal and for me not really worth the money. Guess I just don't have those "golden ears", and to some extent I always seem to regret my purchases of gear, except for headphones. I guess an AMP can be a good thing for those hard to drive full size headphone 300 Ohm or more, but for sensitive IEMs I really can't recommend a separate AMP.