I wonder why it isn't possible for AT to use the same headband-frames from A900x for W1000X/A2000x and so on. 

There are no seperate drivers available anymore. You can try to find some broken DT880's for spareparts or you buy one and use your revox for spareparts. 

Indeed no soundstage king, but still on a level that you don't miss something all the time. 

Read the improvements on their website and you'll know.  

MS2000 or a SR325000 :D was a very special thing. I didn't liked it that much, but I can absolutely understand if other do.   These Magnums, well, that is a lot of money for a better fabricated MS2 /SR325.

Nice to hear that you like this mod!   Quote: Thats a property of the modded superlux housings Nickchen used. Usually isolation and sound leakage is better.  

The problem is this kind of diaphragm on the backside of the driver.     At that time I didn't find a proper material to imitate this diaphragm.   The other difference to DT990/770 driver is the 3mm thick felt in front of the driver.     That's the easy part.

    Quote:   Correct.       Quote:   At least, Beyerdynamic uses the same driver for 990/880/770, but they are using different damping schemes. It is easier to transform a DT880 driver to a DT990/770 but its possible vice versa.   ----   In a few days I will...

Done! Quote:  

Yes, you can make the hole smaller with tape. Just cover hole with tape and then stick a new hole through it.   ...and I have to update the opening post...

The A1 is fix at 100ohm at the headphone output.

I don't know what your are trying to say.

The Beyerdynamic A1 have an impedance output of 100ohms. That tames sharp highs significantly.  But I do not like the overall tonality with 100ohms. I prefer the sound signature with 0ohms output impedance. And thats what most headphone amps have.

Hey Guys,   Did someone tested the newer Audio-Technica pads which come along with A2000x and W1000x on the RP18? Actually I'm using W100 pads and thats pretty close to the W11 pads (except of wearing comfort).

  Quote: These are just called HD25 replacement head-pad. You can get them separately for about 7€/piece!  directly from Sennheiser.