Diamond is budget system, cant really match with Naim or Rega. You need to upgrade the speaker like Epos, Proac or Sonus Faber then you will be blown away. Diamonds limits your system. If you wana keep the diamond, try electronics from CA, Marantz or Nad.

only sounded great around 2am till 6am in the morning? U mean the listening environment during these time?

If u're looking for a upgrade from your Diamond 9.1, I would suggest u to upgrade the speaker instead of amp + CDP, heard from many seasoned audiophile, for the same amount of money and u gotta choose between CDP, AMP and Speaker, always opt for speaker, it does return with significant improvement.

If u favor the Diamond 9.1 warm sound, the next best upgrade would be ATC SCM7 or Sonus Faber Concertino Domus. IMHO to spend 10k driving the Diamond 9.1, would be abit wasted.

Perfect hifi is doing a promotional package of Concertino Domus + Audio Analogue combo at RM9999, go and have an audition, it may suits u

Do you know why your system sounded best from 2am till 6am? I strongly believe it is due to electricity consumption. Starting midnight (on weekdays I would say) mostly people are on bed and this is the time when electricity is least consumed around your neighborhood. Less electricity consumption means less electricity fluctuation, hence the improvement you found on your system. Maybe you could try experimenting some power conditioner or power cables.

Well, maybe you knew this and sorry if I am like explaining ABC to you. But again, using 10k electronics to drive 9.1s will limit your electronics. Your 10k electronics will need better judgment. I am not against Wharfy as myself is a proud owner of 9.1s

Cheers.