Ok, I will critique this first list as I never saw your edit. I must say, I was shocked that I have everything you listed, more or less. All songs are lossless AIFF/FLAC using Audirvana (direct mode, exclusive mode, integer mode, volume DAC only) through my SoundBlaster E3 (poor Teac is STILL in the shop....) at moderate volume (around -32dB). Wang Chung - Everybody Have Fun tonight: To address your concerns you have regarding your headphones, both the main vocals as well as the accompaniment are well defined, coming across as neither forward nor recessed with great airiness and separation in relation to the instruments. The drums (well, drum machine) have great impact for both the kick and the snare; not too much but in no ways weak (very punchy and good body);; It was the 1980s after all and massive sub-bass was virtually non-existent for the time. All in all, it sounds like I am listening through a killer set of loudspeakers. Very impressed with the overall resolve. Propaganda - A Secret Wish: I haven't listened to this album in years! In regards to how well it sounds, one word: Fantastic! Very etherial and spacious. The sound is very clean with a thick sense of warmth attached. Instrument separation is well defined, despite the relatively thick sound. Again, being the 1980s, bass is very clean and punchy (both the drums and electric bass), and the synth effects are well rendered and in some instances really tickle the senses! Prodigy - No Good: Simply put, blazingly fast, detailed, and punchy. Sub bass is definitely present, but appropriately weighted and complimentary. Mostly coming from the effects and not the drums/electronica bass. FLA - Millennium: A while ago I trashed my FLA library as they were encoded in AAC 128 and I never got around to re-barrowing the CDs. However I do own Millennium. Dude, stop taking me back to the good ol'times, it's depressing how much better the music was back then. But thanks, haven't listened to FLA in years! What can I say, FLA on the M4U 1 sounds AWESOME! Being Industrial, there is heavy distortion and processing, and the PSBs simply excel! Lets just say that for being distortion, it is incredibly clean...and fast...and transparent! Imogen Heap - Sparks and Speak For yourself: Nicely detailed (despite having a lowish DR rating). Instruments and effects are fast and well rendered with great transparency. Vocals are forward, airy yet full bodied but not peaky nor any harshness to the sibilance. Bass has really good weight on the low end (very complimentary), and mid-bass is clean and punchy. Much like Propaganda, some of the effects tickle the ears with excitement. Daft Punk - Tron Legacy: Precise, clean, visceral, transparent, linear sonic laser-like perfection (go computers!)! I listened to this album to death with my beyerdynsmics, and I don't regret selling them in favour of the M4U 1. I think the best way to describe the sound is BIG! I simply could not listen to only the two songs suggested, I got drawn in! May'n - Welcome to my Fanclub's Night: FANTASTIC choice! My favourite song from Macross Frontier! One that I can't listen to on too many headphones, You say May'n's voice is shrill. No, it's squeaky, very very squeaky! On lesser headphones her voice is like sibilant nails on a chalkboard, but not with the M4U 1! Well, at sane volumes anyway. Honestly, listening to this song on my PSBs is akin to listening to the DTS Blu-ray on my loudspeakers! May'n's voice is VERY smooth and detailed, forward but doesn't overpower. As for the arrangement, an assault on the senses; fast, airy, good body and spacious. A very treble/upper mid oriented song but the PSBs control any potential glare or peakiness like a pro. Honestly, the songs I listened to I had not previously done so with my PSBs. It was as much as a discovery as it was a test. Overall I am quite impressed, especially in regards to how much better they rendered the music over my Sennheisers and beyers. Well, I hope this helps out.