I have been using the PM-3 for a days and it seems to have a wider and flatter response than my old voice-coil phones so that more detail in the music is evident.  They initially seem to snug but they are comfortable over many hours. Maximum PC called them a winner in Battle of the Cans.

Why PM-3?  Well I was reading "Battle of the Cans" in April edition of MaximumPC where DT1770 PRO had perfect soundstage but OPPO PM-3 was more practical with less cost.  So I decided to try planar magnetic.

Been using new PM-3 for a few hours and I am pleased so far.  I consider it an upgrade from old ATH-M50 and AKG K141.  They are good enough but I find the PM-3 more revealing of details in the music. I miss having replaceable ear pads. The AKG came with optional velour pads which I prefer, at...

Quote:   You can find a cheap choice by searching for "headphone amplifier kit" on Ebay. Select something around $20.  They are usually sent by air mail from China which is cheaper that something quick from UPS.  There is a software guru named Fred Brooks who advised.. "plan to throw the...

Quote: The subjective report of one person should be taken lightly. However, opinions of the crowd can be given more weight. I tried the audio-technicia m50 because it seemed popular here and I am pleased with that choice.

Quote: Mental constipation, verbal diarrhea.....

Quote: Perhaps you are doing boring academic work. Some people are lucky in that they can do what they like instead of having to like what they do.   Try finding a mentor.  A mentor can help you to spend time more efficiently in working toward your chosen purpose.

Quote: I have it intermittently in my left ear. I can ignore it until someone asks if I have it.  It usually occurs after I fall asleep on the sofa in a slouching position. Perhaps I have a pinched nerve.

Well, with the touchy volume control caused by high gain, and the possible instability of the CFA design, I decided to use this amp as a DIY experiment. I bypassed the TPA6120 with a 4562 followed by a pair of BUF634T. The existing split-rail power supply remains since I perceive no problem with...

Quote: If you have a scope, check for RF oscillation. Amplifier instability could be a factor in intermittent distortion. I had a couple of cheap amps with that problem.

  >>On a certain level I do agree (most headphone amps are far more complicated than necessary), but overall I'm sitting here saying dafuq? for your reasoning & justification of that.   A person is more likely to get help if he asks about something well-known.  

Quote: Aluminum wire perhaps?  Each power socket has screws to pin down the wiring. Of course, they must be tight. The ground wires of every socket is fed back to a common point on the circuit breaker panel, as far as I know.   All of the entertainment equipment I have has 2-wire plugs...

Your image page is dark and linked to "party poker". For DIY here it is best to select an amp which many other people have done successfully like "O2", "PIMETA", "CMOY" ..   Anything with a torroid sounds expensive and perhaps has more components then are needed for good quality and a...

See "Post Pics Of Your Builds"  

Quote: I believe other people have experimented with a custom case for O2.. so you can also.  However, you probably should not connect the AC power line anywhere inside that case.  There would be a risk of shock or fire, and not much advantage.  Plus, you need a larger case.  It is easier...