I have both the PM-1s and PM3s. I like them both very much - both work very well with the Explorer 2 and with my mobile phone. The PM-1s in particular sound great through my headphone amp.

On a visit down south I spent a couple of hours listening to closed back phones at a specialist retailer with the intention of buying one. Some I listened to were very expensive and out of curiosity tried the PM-1s as a comparator - I enjoyed them more than anything else I'd heard. I ended up buying the PM-3s to give me more listening options (equipment is in living room and competes with telly) and picked up a pair of the PM-1s from fleabay at reasonable cost.

Both are worth hearing but as mentioned above, it's essential to hear potential purchases for yourself.


Main system: NUC, Roon, Network Acoustics Ag ENO/cable, 218, 5200SE, Townsend Podium, Sennheiser HD820/800s, Sennheiser HDVA 820 amp.
Mobile: Explorer, IE800
Kitchen: MS200, F80