Audio Aero Prestiges new transport?

I received answer from AA to my questions today. They informed that I have to pay 450 euros + shipping charges for that upgrading process. I quess I will do it anyway.

Saxman2, please describe sound differences between old and new transport. I quess they changed the motherboard too.

1.Much quieter operation
2.more open
3.better bottom end
I have a Dartzeel pre and it gives a very different
presentation(a little leaner and more open). I like the sound
direct and through the pre amp.

I like to use my Prestige with ARC ref 3 with balanced cables. It gives me fuller sound and better soundstage.

A few days ago, after a long wait I finally received the upgraded Prestige (SE + new Sony transport).

The initial impression was: very quiet transport, still more open, tactile sound, slightly stronger bass. Overall: worthwhile upgrade.

However, there still seems to be a problem with the transport:

When I start the player, an electronic noise (hum) is heard from the speakers as the transport spins up. When I stop the CD, the same type of noise is heard as the transport spins down. When I go from one track to the other, short electronic pops are heard. I do not mean mechanical noise coming from the transport (which is much softer than the previous Philips transport), but electronic noise coming from the speakers (or headphones). The noise is quite irritating and sometimes occurs at the same time as the music. As soon as the transport has reached a constant speed, there is no noise.

This problem occurs only after the player has warmed up. When the player is switched on after a period of rest (= not powered on), there seems to be no problem, but it starts after approx. half an hour or so of being powered on.

I have not yet written to Audio Aéro about this, but plan to do so this weekend.

Anyone having a similar experience with the Sony built transport?