Buying a Tube Amplifier

I totally disagree with some of the posters above about electric guitars and tube amps. The tonal density of electric guitars is represented MUCH better on my current tube setup than any of my previous ss setups. Tubes are not necessarily about "warmth" as much as density of tone. Now, granted my amps are way outside of your suggested price range.

You didn't mention if your budget was for just amps or amps and a pre. If you are looking at that price range for an integrated, I suggest you look at a used Manley Stingray. I doubt you will be disappointed, and it will drive moderately efficient speakers.

As for driving B&W speakers, I would tend to agree with others that tubes in your price range might not be a good match.

PMB

I am having a hard time finding any information on the ARC D70, any suggestions where I can get some

I agree with Daveyf but again biasing is a bit trickey. You might want to check the archives here and on Audio Asylum. I'm not sure if ARC has any info on their website but this is an amp you can't go wrong with, proven design and excellent performance, good price and easy to resell if it doesn't meet your needs.

Great response Freediver!

Saunig, you might check under the 'Reviews's section, I posted a review there a few months ago. Other areas to research are the Audio Asylum forum on the web.
BTW, Freediver, as a guitar teacher, i don't quite agree with your post about why guitar players favor tube amps. IMO, we favor tube amps for their superior sustain ability and warmth that they give to the pups. Distortion is also more controlled and useable. In our home gear, we are looking for less distortion and more truth to the source, not less. Tubes in home gear are able to give us a 'warmer' sound and IMHO a more spacious sound....not quite the same as what we need in the guitar world, just IMHO.