Just a quick impression/observation about my Livewires. Not a rigorous scientific test as some songs were ripped in ALAC and various MP3 bitrates (mostly 192 and 256 VBR). I'm in the process of re-ripping CDs in FLAC for Rockbox, and maybe a comparison will be due then. But here's just a quick note for those considering the Livewires, and I'd like to hear from those with Livewires, too.
I did a burn in by DVDR->optical digital->iBasso D1->Livewires for approximately 8 hours overnight. Detail is still there, and it sounds less harsh than when I first got them a couple days ago.
Comfort is great. Although the Right earpiece seems to be more fussy about insertion technique as far as noise isolation is concerned. Seems to be better noise isoation compared to my UE SuperFi 3.
I've been listening with my Livewires for a few hours with this set up:
iPod nano 2GB 1st gen -> ALO Cryo Silver LOD -> RSA Tomahawk.
There is no perceptible hiss before the 3 o'clock position on low gain. The Line Out + Tomahawk combination is practically hiss-free. The Tomahawk also seems to prevent clipping/distortion when using the iPod nano's EQ.
Currently, I'd describe the Livewires sound as analytical or clinical and slightly bright (but with no hint of sibilance). The Livewires excel in detail, especially in the highs - to the point of almost being harsh. The bass can be prominent (see below) and does not overpower everythingelse.
It is not the warmest sound out there and I'll see how burn in helps, so you'll have to take this into consideration. I have a Grado SR60 with hundreds of hours on it, and I'd say that the Grado sounds slightly warmer than the Livewires (with 8 hrs break in). Never thought anyone could call the Grado sound warm...
So far, Livewires have worked well for acoustic/Jazz music such as Diana Krall, Patricia Barber, Holly Cole, Alison Krauss, Rodrigo y Gabriela, etc. The re-mastered copy of Miles Davis' Kind of Blue (the remasterd CD version, not the SACD layer - haven't tried my home setup yet) has prominent hiss - a limitation of the recording. However, Muddy Waters sounds great - clear, musical and relatively noise-free, but maybe because there are more quite passages in Kind of Blue.
Pink Floyd's DSOTM sounds great. The effects come through clearly, but perhaps because it's a recording engineered for detail. One thing I've noticed is the details in acoustic instruments come through more pleasantly (clearer AND warmer) than synthesizers (some would argue synth sonic detail is irrelevant). Pink Floyd instruments sound warmer then, say, William Orbit.
Nouvelle Vague's This is Not a Love Song and I Melt With You is very revealing detail-wise. The instruments come through very clearly and fluidly but never overpowering the vocals. Similarly, Amy Winehouse's There Is No Greater Love sounds great - this track has intricate detail that comes through clearly without blurring the acoustic instruments in the background. Amy Winehouse's voice sounds a slightly thinner compared to a similar listen on the Grado SR 60 - just my subjective opinion.
The Livewires is capable of very very deep bone-shaking bass, but it seems only some recordings bring out this bass. I've tried various EQ settings (limited on the iPod, of course), and still can't seem to get consistent gratification from bass-head type music like Crystal Method or Blue Man Group CDs. Some songs shake my head and brain with bass, others don't, even though the songs to me are supposed to be bass-heavy. I was expecting more 'thump' with Dream Theater's Systematic Chaos, for instance.
For some reason, Sting (even the 1994 remasterd Best of), Toto and Boston (Third Stage is an incredible CD) recordings sound slightly thin and the bass and lower midrange/vocals seems to be weak compared to the Grado. However, Gwen Stefani, Akorn and Fergie come through with very strong, almost boomy bass.
However, everytime I'm frustrated with the Livewires' shortcomings, I do a quick A/B with my UE SuperFi 3, and the Livewires win everytime - as it should be considering an almost $200 price difference.
I've been happy so far, maybe because it's my first phones with such level of detail, but only time will tell if this is fatiguing, or if the sound will change with burn in. Will let you know. The bottom line is we can analyze an audio system to death, but what matters is how much enjoyment we get out of the set up (therefore the need for Head-Fiers to have multiple setups).
Maybe the Livewires will have better synergy with an amp other than the RSA Tomahawk. The only other amp I have is the iBasso D1, but I have to be mobile right now and can't listen with it right now. My iPod is only 2GB, so trying different CDs is a real PITA. I'll try evaluating the Livewires by PowerBook->USB->iBasso D1 netxt.
The above is just my quick, amateur(ish) observation, and individual results may vary so the Livewires' 30-day money back guarantee is great here. Note, however, the ear impressions are kept by Livewires and after the 30 days the phones have no resale value.
Maybe someone else can tell us how similar tracks sound on their Livewire / amp combination. I'm particularly interested to hear from others who have had their Livewires for a while. Is this IEM worth keeping?
Phew, I typed more than I planned to - kind of like Head-Fi where I spent more than I planned to.