There is a consumer review of a G08 which can be found here :
http://forum.hifichoice.co.uk/viewtopic.php?t=10755

In it the reviewer states :

"It took between 200 and 500 hours for the dynamic range to open up and the timbre of instruments (particularly strings) to be reproduced accurately."

Which to me does seem like a very long time but seeing as I dont own one I cant compare.

Hopefully things will get better over time for you and your new investment.

Meridian DSP 6000's | DSP 5000c | 565 | 518