looking for an integrated amp in the $1500 range

Regarding the rogue Sphinx…. I haven’t heard the V.3 which very well could be a totally different animal, but had the V.1 for a very short time. Did not care for it at all. 

For a $1500 or under integrated you need a Willsenton R8. It gives you the option of either 4 EL34’s or 4 KT88’s. You can swap all different types of tubes and various 6SN7 tubes. Tube combinations will drive your system to sublime levels. You won’t miss the 4004. All for less than $1500. Available at Amazon or directly from the manufacturer for a bit less, and delivered in less than 10 days. But of course the return option via Amazon has its advantages if you don’t like it. But I believe it’s the perfect budget integrated with all the power anyone needs. See all of the videos on YouTube.

An idea if you want to go used. The Music Room will give you a 45 day return window on their gear and sometimes will pay return shipping if you aren't happy for any reason. I have seen some good deals on amps there and they get new stuff all the time. 

Pioneer A-27 integrated amp from 1978-80 recently serviced by a good technician will bow away anything else in the $1500 price range. First 30 watts pure class A, the rest class A/B up to 120W per channel. Finest example of the Golden Age amps and receivers, very rare though.

I don't work for The Music Room so check their policy before you buy. They will also negotiate the list prices.