It all depends on what you are after. The gsi75 sure fits your expressed desire for fewer boxes and by extension, fewer cables. My recollection of the phono stage is that it was highly adjustable. It is a solid state phono stage however. The dac was actually quite good.
the downside of the gsi75 is what you get is what you get, zero ability to season the amp if it doesn’t check all your boxes. One manufacturer of kt150’s, one manufacturer of 6h30’s, no tone controls, about your only opportunity to affect the sound would be on the ac side and speaker cables. Maybe phono cartridge. Maybe through dsp with roon but that would be about it.
make no mistake, the gsi75 was arc’s all out assault on building a reference quality integrated and it is an exceptional piece, especially at used pricing. Biasing was no issue and it was rock steady. I had mine matched up with wilson audio duette 2 speakers and it was a really special setup. As i type this Im trying to recall why I moved on from it and frankly, I must have been crazy LOL.
good luck and best wishes.
