Got the Arrow 4G. As an amp newb, I don't have anything to compare it to, but part of my overriding intentions have been met: form factor, form factor, form factor. I bring this with me and don't leave it at home. It fits in my pocket with the music playing phone. Sure, the fatter, larger amps can pack more sound enhancement, but what good is it if left behind? As for subtle but useful features, I look forward to double headphone insertion and watching a movie on the pc with the wife. Sound is enhanced with no thrown switches. Switches thrown do result in appreciable differences.
Thanks for your thoughts. The form factor is extremely nice and the switches give the amp good versatility, which can make some very technically proficient headphones that don't fit your preference more to your liking.
sorry, I haven't heard any other amp to comparing them with arrow 4G (I live in Iran)
but I can say some things absolutely:
1- I hear a lot of interference when some one is trying to call me (my phone is Motorola)
2- the Arrow is really portable (I put it in my pocket while going to university)
3- I can't hear any noticeable improvement in SQ of my shure se315 (although I didn't expect any improvement on SQ when I ordered arrow)
4- when I listen to live recording tracks, the sound stage is amazing
5-I'm planning to buy a westone 4r with a 75ohm added impedance to pair with my arrow ( this is why I ordered arrow )
edit: do you find the crossfeed function useful ? I just use it on some live recorded tracks.
I haven't use bass boost; but put the treble on " I " some times.
1. Yep, and that is the most unfortunate thing about the amp.
2. Very portable!
3. Lower end BA earphones in general don't improve much with many amps.
4. Is the soundstage better with the amp? If so, that is an improvement ;)
5. Nice, should be a good combo
I don't notice a difference with the cross feed on, but then I don't listen to much from before the 70's.
Yo, Joe - typo !
I know - I kept typing 'EPH' instead of 'EHP', but there it is in black-and-white.
Good to hear. The hiss really isn't a factor for music playback, but I noted what I heard. I do have some ultra high sensitivity CIEMs, with the most sensitive being the DUNU DC4 and hiss isn't an issue with my setup. If you have a quiet source, you may hear the hiss, but it is still doubtful. I try to mention all the things people may be concerned with, even for tiny % of people that may have a setup that could lead to hiss.
just received my portaphile 627 yesterday. it is the version with the blue lights. The amp is currently going thru burn in. I can say so far that using CK10 there is no hiss and no perceived channel imbalance down to the quietest volume setting (I had to take off one ear piece to verify sound was actually coming out both). the bass quantity/impact is significantly increased. I'll reserve the rest after burn in
one more thing...Mr. Aguilera has been extremely helpful thru this transaction - emails were replied promptly and I was given updates on the order processing, and a surprise on shipping
 and of course I post this in the wrong thread doh
The channel imbalance is there on mine. I listen at extremely quiet levels, as low as the amp will go, when lying in bed and every single amp with an analog volume control has had imbalance issues with my high sensitivity CIEMs at that volume. Not a big issue IMO and as mrarroyo stated (good).
And thanks for posting here ;)
I have 5 CIEM reviews I need to do before I review any more amps, and each review takes on average 2-3 weeks... But, it is an amp I am very interested in hearing. I did have the RX, I think the original and while it was great with some of my IEMs, it didn't fit help my SM3 much so I sold it.