Ultrasone Signature Pro

I had these professionally modded to allow for the use of a balanced cable.
I used these with a IBasso DX200, Dx150 w Amp 3, Sony zx300, Sony TAZH1ES.
The build is excellent. Solid, beautiful leather cups (may be too small for big ears) and headband that resist sweat unlike typical leather (this is Ethiopian sheep leather). The fit is snug but not tight. The ability to deaden the outside noise on busy NYC street, trains, and subway are best ever for closed back (Sony MDRZ7 stinks in comparison).
They need some power, I felt sony zx300 (4.4 balanced) came up short. The IBasso w Amp 3 (2.5 balanced) gave it the extra power to push the lower end to where it sounded alive and full. The Sony TAZ also pushed it to an even greater extent (4.4 balanced). Bottom line is that they are not as efficient as some other closed backs and as such need a bit more power for it to sound even better.
The lows are slightly accentuated, but are not bloated and never effect the mids. The mids are good but at times can seem slightly recessed and not as articulate as I think they should, but thats more with male singers than female. The highs in general are never shrill but still have that sparkle that I like when its supposed to be there.
I listen to mostly classic rock but tested these with everything from the doors to fleetwood mack to 2pac to U2 to DMB. I will say like any headphone, the better the source material the better these headphones sound
My favorite match is the Ibasso DX 200 and 150 with the 2.5 balanced amp3. Great all around sound w enough power to drive them effectively on the go
And speaking of on the go, these fold down flat into a beautiful case, or fold in half into an even smaller profile. Either way they are very transportable and fairly lite. I love the supplied case as I can keep the cables attached and also keep my Ibasso inside secure.
If you want or need transportable, high quality material, and a headphone that sounds as good as many other higher priced headphones, this is a winner.
I compared these to CA cascade, Sennhesier HD800S and Sony MDRZ1R. Cascade are so bassy even after 100 hours burn in I sold them. Love my Senns, supper open sound stage and natural presentation (and no they are not bass devoid just natural if there is bass in the song they are true to it), and The sony's while a smooth listen seemed kind of flat in the highs which I guess make them so smooth.
All in all for critical listening and for pure enjoyment I love my Senns, but on the go I feel while the Ultrasones are different, they give me a at home sound experience on the go and while not as perfect as my senns are a good sacrifice for on the go listening.
I had also listened to the CA Vega, andromeda and Doarado. Bought and sold all 3. The sound isn't bad in any of them but IEM just don't give me that sense of openness that a over ear can (and by openness I mean sounstage of which the ultrasone while way behind the Senns still is fantastic)
As you can tell I am not true audiophile. I love music and am always looking for new tech. I got these modded to keep forever. And the way they are built I would say they will outlast many other headphones.
I also have had the Audio Technica 50X just for comps as they seem to have a similar form factor (although built cheap in comparison). Hands down the ultrasones blow them away. Sony MDRZ7 w 4.4 balanced were good but when I got the ultrasones I sold the Sony that day
I love em. I say audition them and if you like them and feel you are missing a dual exiting cable and the balanced option, look up Pterek on etsy. He did them reasonably priced w great precision. Mine are dual exiting 3.5 sony locking collars (he can do whatever you want). Highly Rec these!

The Ultrasone Signature Pro's...my second pair of Ultrasone headphones coming from the Edition 8's. I must say I am pleased with these especially for the price I managed to get them for. Listening from a decent smartphone or a MacBook I have to say they are impressive.

BASS
The bass quality is very very good. And in terms of quantity does not disappoint. The sub bass is deep and wide. Higher frequency bass is agile and punchy, perfect for metal (double-bass drumming).

TREBLE/MIDS
A little shy but in no way recessed. The treble and mids sound beautiful. While not as forward/euphonic sounding as the Audeze LCD-2's or as resolving as the Sennheiser HD800's, the midrange displays excellent detail/resolution. IMO these are more close in sound to the Fostex TH900's but with a more held back midrange. The treble is fast and in no way sounds harsh or metallic.

OTHER COMMENTS:

Very good for classical music. And watching movies is a pleasure as well. I enjoy listening at lower volumes too. The bass retains its punchiness and micro details are displayed with great satisfaction. Not a bass monster.

CONCLUSION:

A great all-rounder headphone for every genre of music. Competes with a lot of higher end headphones. Portability is also a big plus.

I have my Signature Pros a few weeks now and i am really enjoying them.
 
I have been into headphones for about 4 years now and these are my most expensive pair (i have a pair of Denon AHD2000, Grado SR225i and Etymotic ER-4PT to compare to).
 
I was looking for really good quality portable headphones that have decent isolation and great sound and these fit the bill perfectly.
 
The sound quality is fantastic, the bass is solid without being overpowering, the middle is beautifully balanced and the treble is crisp without any sharpness. I have found the instrument separation is really noticeable and ive been rediscovering a lot of my music again and hearing parts i never knew existed. The soundstage is very good though not in the class of a well driven Hifiman HE6 it is the best ive heard from a closed headphone.
 
I have driven them from my Fiio X3, and iPod with the Fiio E11 portable amp, my laptop and my iPhone directly and they all drive the cans very well.
 
The headphones are well made and you can feel it in your hand, the leather is beautiful and is very comfortable. They fold easily and come with a very nice hard case which makes transporting them a simple matter.
 
Bottom line I’m wearing them for about 4 hours per day, they always feel comfortable and the sound is never fatiguing. If you can afford them id say treat yourself!

I've found myself unable to use custom IEMs and needed to find some high quality portables for my three hours a day on public transport. After lots of research and some excellent help from assorted head-fiers, I settled on these.
 
My music tends to be expansive american 20th century (Copland, Ives, Gershwin), more minimal (Reich, Stockhausen, Ligeti), and female vocal (Dusty, Roberta Flack).
 
I've been listening to the Sig Pro non-stop since they arrived, and for my head they are as comfortable as any I've worn. My main home headphones are LCD-2 and I love their sound which seems to work very well for my preferred listening, I didn't expect the new ones to match the LCDs, and they don't, quite. But they are remarkably close. They have quite an open feel for a closed headphone and the Copland and Gershwin feel very spacious. I'm not a major bass head, but I dug out some meatloaf and felt really nice, absolutely bassy enough for me but still strong on the voice. Brass sounds really good, bold and bright - just the way I like it.
 
Next step, going portable. This was the main reason for buying them so I really needed them to behave nicely with my IBasso DX-100. And they really do. To my ears, they actually work better with the DX-100 than the LCD-2s. They more than match my ACS-T1 CIEMs for comfort and clearly exceed them for sound quality on everything I've listened to so far. They only fall short of my perfect portable headphones in two respects: sound isolation and noise leakage. They aren't bad at all but they don't compare to CIEMs (I guess nothing you stick on your head as opposed to in your ears is going to...).
 
The overall package you get for your money is nicely assembled. The case has a sturdy feel and enough space for my DX-100; the interchangeable cables are useful, as I prefer shorter for commuting and longer when I'm settled somewhere; and I hope to get hold of the cable with the inline microphone to try to use them as a phone headset. 
 
All in all I love them, and if I was only allowed one pear of headphones for all my needs (perish the thought), I'd pick these.

Just received these babies to replace my Ed8 for portable use. I must agree that they don't sound as "Wow" as the Ed8 on first listen. Although all the detail is there, the soundstage feels a tad more congested than the Ed8, the upper registers with female vocals have that metallic tinge to them. Thats kinda surprising since I've been listening to the EX1000 the past month or so extensively.
 
Anyhow, the Fostex HP-P1 can't seem to drive the SigPro as well as I had hoped. Adding on my trusty iQube helps a fair bit with the aforementioned soundstage and tinge. Gonna burn them in (and my ears as well) and see how they go~

Excellent set of closed cans and these would be my favorite if only they had a little more punch in the low end. Disappointing for me to hear mediocre bass. Especially in a set of closed cans.

 
I just received my SigPros (bought from a fellow head-fi'er), and now have several hours with them.  They are great headphones.  Agree with most of what everyone's saying about them.  These are the best sounding headphones I have heard.
 
They don't have the look of the higher priced headphones.  In fact, they look like they'd cost $60-150... which is a selling point for me.  I listen exclusively at work and leave them at work, so having them look like everyone else's headphones should help keep them from getting stolen.  You don't get the "I just paid $1k" wow factor when you look at them, but depending on where you listen, that's for the best.  They are a wolf in sheeps clothing and you'd need to be a headphone-centric audiophile to have an idea what they are.
 
It's when you put them on that you realize where the money went.  Compared to my memory of the D7000's, they sound a bit crisper throughout the spectrum, but otherwise comparable sound signature.  Solid, thumping bass in songs that call for it, beautiful male and female voices, at times edging towards too much on the highs, but never crossing over to sibilant or screechy.  Wonderful but natural separation of instruments.  Great isolation in and out, so you can listen at ambitious volumes and not worry yourself over annoying your co-workers (or embarrassing yourself with your Lady Gaga and NSYNC anthologies).
 
My only very minor complaints so far, are comfort-related: I could do with the headband cushioning being a bit softer.  Most people probably won't have a problem with this, but my hair is thinning a bit on top, so my hair doesn't provide any built-in cushioning to speak of and the headband gets to feeling hard on top of my head after awhile.  Also, the earcup cushioning isn't deep enough.  My ears don't stick out particularly, but they still press lightly against the fabric-covered, metal inner wall, and this too begins to irritate over time.  I'll grow ear callouses if I need to.  Like these headphones enough.
 
They are nice and light, so their on-head weight is never an issue.  Clamping is firm but not uncomfortable even with prolonged listening.  The detachable, locking cable goes into the left earcup, which I greatly like as it doesn't end up constantly catching on the zipper of your hoodie/jacket/sweater/etc.  Ends up being more out of the way.  Materials aren't showy, but seem solid and capable.  Time will tell about durability and cosmetic longevity, but I have some confidence.  The leather on the earcups is gloriously smooth and supple.
 
Comes with a nice (but again, not flashy) leather-wrapped hard case, a large and a small terminated straight cable, and that's about it.  "Simple, high quality, and to the point" seems to be the motif for this headphone and package.
 
I'm looking forward to getting back to listening to my music again, and not continually analysing what's not quite up to par.  These fit perfectly into my lifestyle needs, and into my desired sound signature preferences.
 
They are listing at $1299.00 but can be had much cheaper by finding them used (like I did) here in the For Sale forum, or by calling RMC Audio (e.g., not by ordering over the internet with them).
 
Let me know if you have any questions.  I can only A/B them with my Westone 4 IEMs at the moment, but can give you general comparisons from memory of my previous cans.  Oh yeah, I listen to most everything that's not sung in German, although The Magic Flute is an exception there.  So: metal, rap, folk, top 40, classical, opera, country, indie, etc.  I keep my playlist on shuffle.

Running gear:

* JDSLabs built Objective2.
* HRT Music Streamer II.
* Lots of lossless audio and some MP3-320.
* Also tested with Fiio E17

Other cans I own(ed) that I may be compairing these to:

* Grado GS-1000 (non-i)
* AKG K701
* Sennheiser HD 25-1 II
* Grado SR225i (Modified)
* Grado SR80i w/ L-Cush Pads


I'm loving having closed headphones at home, and the SigPros are very nice indeed.
At first I found them a bit bass heavy however, today is a new day and I'm not noticing it as much as yesterday,
This could be me getting used to them (Highly probable) but it could be them breaking in and allowing the mids to sound more freely.

As far as closed headphones go I think they are as fast as the HD 25-1 II's, with a much larger sound stage and less fatiguing.

Do I like them more than the GS-1000's?
I think so... mainly because I find them a bit 'faster' and they have a larger sound stage.

What did the GS-1000's do better?
Vocals, for example, listening to 'Cat Power - The Greatest' would really shine on the GS-1000's but Chans voice feels a little recessed on the SigPros.
Maybe this will improve over the break-in process.

So far, 5 hours in I would sum them up as follows:

• No fatigue at all.
  
• Excellent soundstage.
  
• Very 'fast'.
  
• The build quality cannot be faulted, they would probably last a lifetime.
  
• They sound much better on my Objective2 than on my Fiio E17.
  
• Slightly recessed vocals with Folk recordings, this improved after break-in.
  
• I would not say that they are NZ$1200 better than Sennheiser's HD 25-1 II's, however they are a good step up and I don't know what else you would go with for the money (As far as closed cans go).