If you only need an integrated for component switching and not a DAC or phono stage, I would go with a small builder like James Burgess. Ask him to install a selector switch, shouldn't be hard. I just had a Burgess and it was a very very nice sounding amp. Lot's of small builders, including Had, could probably get it done in your budget.
Integrated Tube Amp approx. $2,500
I'm looking for suggestions on integrated tube amps in the $2,500 range, give or take a few hundred. My speakers are Klipsch Cornwall IVs with a Musician Pegasus II dac. I found the Black Ice Fusion F22 V.2 which looks interesting, but not a lot else in my price range. Thanks.