No specs listed on the Port, just that it's an upgraded Connect. Adding tubes for pizzazz and for an office.
I would not spend much more on components than you spend on the source, so how about compact system without a huge investment until you are hooked on tubes.
So, how about a Port (~400) to Schitt Lyr 3 (tube preamp ~500) to Klipsch RP41 or 51 powered speakers (~400) and you can have a simple office setup. That's half the price including the Port. If you just need to spend more, upgrade the tube preamp.