The other effect of getting new pads is that I can safely turn the volume up a little higher. The old pads had lost so much material and volume that I think I was squashing them closer to my ears to get a good fit. The new pads definitely feel thicker and softer and there is a little more space between the drivers and my ears now. The HP-2 also stay more firmly on my head, requiring much less fiddling to get perfectly comfortable.
So I listened to The Cars (1978) HDCD tonight. It's an album I know really well, and the effect is more than placebo. I did turn the volume up a little bit, but there were things I hadn't noticed before and overall I was enjoying the album more than I expected, thinking I'd been overplaying it. The first thing I noticed was that Ric Ocasek and Benjamin Orr's voices were a lot clearer and more upfront – I had always found them too distant and indistinct before.
The other obvious improvement is the soundstage. It doesn't get any bigger but stereo pans and reverb are well integrated, and the arrangement of the physical instruments (or the engineer's arrangement) is precise and realistic where it was hazy before. The crescendo on the last track, All Mixed Up, gets loud, but the instruments stay separated instead of colliding in a noisy muddle like they did before.
Drums and basslines are more urgent, timing seems tighter, and rhythm is more prominent. The HP-2 are fun again. I really enjoyed the guitar solo bit at the end of Bye Bye Love, which I had never noticed before. It was clear as day with the new pads. Treble rolloff is gone and voices and tones sound richer and more natural.
I'm a happy camper. I'd been slowly becoming more and more dissatisfied with the sound of my system, and I guess part of the problem was the steady deterioration of the pads.
A few months ago, I noticed that holes had opened up on the rim where my ears were touching the inside of the metal cups. Turning up the volume didn't help much, either – it was the same flat, lifeless sound, but amplified. I think the new pads are focusing the sound of the drivers where the old pads were "leaking" the sound. Do not underestimate the effect of the right pads on HP-2s.
More to come.
Old pads: