@firstonetallguy, I should have added “neutral” and transparent. The T2 is on the neutral side, so if your system is neutral then it may be too much of the same thing, which some people
may like. Totally a matter of preference.
It doesn’t seem like your system is super neutral so the T2 may be a good fit. The other thing to mention is that I compared the T2 to my Marantz 8805 and found the Marantz to be warmer, a littler fuller sounding, and had a tad wider soundstage though less accurate (using HEOS and Tidal). The T2 had higher resolution, was crisper, and was more accurate. Marantz in general is on the warmer side. Though the 8805 has a different architecture than the 7703, the 8805 has dedicated HD boards.
If you do end up keeping the Marantz as your preamp, then make sure you use the multi-channel inputs since those are the only ones that pass a direct untouched signal. PM if you want to discuss further.