Last night I removed the CDM9 Pro transport from my CD Player and was amazed to
find that when I shook it, it sounded completely different from the CD
transport I took out of a cheap Aiwa.

It had a less plastic sound and I concuded it was because it was partly made of
metal.

Can anybody confirm that CD mechs do sound different or am I alone on this?

My 6 year old daughter could also hear the difference even under blind
listening tests at a distance of three and six foot. I have made a tape
recording which I can supply if anybody is interested the cost is $10.00.

When I connected my scope to a high quality microphone the scope also showed a
difference in the wave form. Conclusive proof I think that CD transports DO
sound different.