My Oppo Pm-3 pads were falling apart, but I couldn't find a replacement. ATH-MSR7 pads fit nicely, but you'll need to tear the original pads apart & keep the plastic base. Carefully
Pad Replacement for Oppo PM-3 | Audio Science Review (ASR) Forum
Pad Replacement for Oppo PM-3 | Audio Science Review (ASR) Forum
Oppo PM-3 YDYBZB Pad Replacement Guide • Audioreviews.org
Pad Replacement for Oppo PM-3 | Audio Science Review (ASR) Forum