Budget? Really, I suppose it depends on what you plan on doing. I don't know that plugging a tuner into your pc soundcard is going to sound any good. You could take the line out of your pc and send it to the aux of an amp but I imagine there would be a potential for unwanted distortion. I used to do this with my Delta 44. It worked fine for listening to music.

When it comes to PC audio, I think it's all a matter of just buy what you can afford. The more you spend the better.

Budget around $600.

My initial idea was to connect PC and tuner to an amp where I can select the source and adjust the volume.

I use passive speakers and an amp, that way if you blow a speaker/ amp just use the other one/set you got till you get it fixed.

One things for sure, put your money into a good set of speakers that turn your crank!

There is nothing better than enjoying your mixes.