Bass leaves after amp warms up?

I'll be curious to hear the outcome of the new amp, which is rated at 135 watts into 8 ohms and 200 watts into 4 ohms.

As I have followed this post and looked around on the net, I just found this review on the AudioPrism III conditioner. I believe Fishing uses the II, which is very similar. What is interesting is the comment made in the 3rd paragraph from the end. They also make reference to a similar conditioner. Hopefully someone with more technical knowledge can explain why they say this.

http://www.soundstage.com/revequip/db02.htm
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Fishing, here is an article about the other conditioner that was referenced in the AudioPrism review. It’s long, but read carefully @ Listening Up… the Game is Afoot. The last 3 sentences of the 1st paragraph seem to somewhat describe your problem. The next paragraph talks about positioning the conditioner, and further down shows a picture of a fairly extensive setup.

http://www.soundstage.com/noisy15.htm

I may be ”grasping at straws”, but just trying to help. The best way to determine if the AudioPrism is causing a problem is to take it out completely. Just use something like a heavy duty outlet strip to get enough plugs for everything, and you probably will notice some degradation of sound, but play the system to see if the problem occurs. If it does, we’ll just keep looking for other ideas. At least, this is something simple to do, and I don't think it is something you have tried.

Today I will set up just amp & turntable sans digital.
Sounds like a good experiment!

Sounds like a great experiment. I would also use the power cord that came with the amp instead of the Kimber PK10 you have been using, and everything plugged to the wall outlet. Keeping the system as simple as possible will help to resolve the problem.

What about the Kimber PK10, did you use it with the other amps? I remember someone talking about faulty AC connections, and thought about the plugs on each end of the PK10. Have you ever used the stock power cord?

It's been a while since I used stock power chords but will give it a shot.

Did you ever try a different power cord on the amp?

Fishing, definitely appears to be a very high quality integrated and I do hope this new amp works well for you, however someone has misinformed you about the power. The ratings I quoted was from the company's website.

http://www.accusticarts.com/pdf/produktblatt/power-I-mk3.pdf

Agree with Mapman, what's on paper never tells the whole story.