The B&K Ref 30 is an excellent choice.
Before going with the suggestion to keep the Yammie, do you have a dealer
that will allow you to use the B&K on an evaluation basis, ie for 2-3 days?
You should find that the B&K will hold its own against stereo preamps running out to the $1500-2000 price point.
The DSP-3090 does lack analog bypass, and the B&K has better internal
DACs than the Yammie, plus analog bypass. So if you're using your DVD
as a transport and D/A with the Yammie, you'll see an improvement there
as well. In addition, because of the analog bypass capability if you want
to add on an external DAC, you can do so as well, and just take the DAC
output as a Direct (aka analog bypassed) source.
The stereo preamp suggestion would be ok, but quite frankly, the Yammie is a little long in the tooth when it comes to technnology.
I've had the B&K Ref 30 for 4 months now, having reviewed it for Secrets,
and can tell you the analog bypass is excellent, having recently wrapped
up an audio-only review of the Sony DVP-S9000ES (Stacey did the video).
I'm currently playing with the 5.1 bypass and the Onkyo DV-939 and JVC
XV-723GD, and once again it does an excellent job of getting out of the
You can read my review of the B&K Ref 30 at the Secrets
Your call, but I think with your mix, the B&K is the better choice.
Contributing Writer,Secrets of Home Theater and High Fidelity