I'm not going to write a full review of my Fostex PM0.4n's but as of right now I am really impressed. I will probably be using them in the living room for a little while, but they are definitely near field monitors. They sound amazing from the sweet spot, but still very good from other places.
The treble is clean and detailed. The mids are clean and very detailed you can hear the vibrations in a singer's voice or guitar string clearly. Vocal's are right up front and centered. Imaging is good when you have both volume controls properly adjusted. The bass is clean but not overpowered. A bass guitar or tuba sounds right. If you are in the sweet spot the bass is very good. Off axis or at a distance a sub would make a wonderful addition. They easily fill an 8x14 room to my satisfaction at half power. I will probably invest in a cheap sub to improve the off axis listening and fill the room even better.
I am currently listening to them on mid volume from the other end of the house and they sound very clear from three rooms away, in spite of the fact that they are at a moderate listening volume in that room. As you get closer they sound better and better. I was afraid they would be horrid with a low quality source, but I am using an iPod nano 4g with a fiio line out dock and an old generic 3.5mm to RCA cable and they sound fantastic. They are relatively large compared to something like the audio-engine a2 but they are smaller than most bookshelf speakers.
My 5yo has spent the last 40 minutes listening to kid's music on them in utter bliss. She ran in and sat down in the sweet spot. :D
If you toss a quilt over them covering the speakers and sit off axis.... they sound like Bose pc speakers.
As long as you don't muffle them behind soft furnishings, I suspect you would really like them.
After sitting in the sweet spot for a bit, I have realized something. With the same sound and source the Fostex PM0.4n sounds almost exactly like quarter modded Alessandro MS-1's from the sweet spot. The sonic signature is pretty darn close. If you like those headphones, you will like the Fostex.
Edited by cheapfi - 11/9/13 at 2:43pm