Tube integrated amp recommendations

Good to see a wider list of options now.

At your budget (new and used), you have dozens of brands to choose from and hundreds of models, if you take the time to research via the multiple threads within Agon on the same question you posted AND if you search wisely across the internet.

Agon posters tend to cluster around certain brands and components and on those more widely available here in the US.

I encourage you to also consider the lesser known European and Japanese options.

Thanks everyone---I've got my homework cut out for me. I was hoping to get more brand recommendations. Customer service is important to me and Raven definitely has that going for them. 

I purchased an Octave V80SE, which runs KT150s, along with their super black box both used from a single owner. It is a phenomenal integrated, one of the best I've ever heard. However its cost is a bit over what you're looking to spend, but I bet one of their other integrated amps would be great. Octave tube integrated amps are not single-ended (all except one model), but if you're looking for clarity, honesty to the recording, dynamics, fabulous midrange that isn't too warm (just on the warm side of absolute neutrality) Octave is great. I have low sensitivity Dynaudio 2-ways and this amp gives them all the current they need and then some. I'm currently using their built-in phonostage, which is actually quite good, with the hopes of upgrading the phonostage down the road. 

@bluorion enjoy the journey.....

Take a look at the Mastersound compact  845.  I have one you might be able to talk me out of.😁