To answer your question it really is a matter of system synergy. Whether it be tube or SS, every component does contribute its own sonic character.
If the question is, whether the Oppo will add too much TUBE character, then the answer is a definitive NO. It is VERY neutral and resolving. Yes, tube rolling will give different tonality and does allow you to adjust the sound to your personal taste. Being neutral and resolving however, means that it will not OVERLY color the system sound! If ANYTHING, the resolution and neutrality will remove what HAS BEEN a bottleneck to good sound in your system prior to addition of the ModWright 105!
I hope this helps!
Thanks,
Dan Wright
President, ModWright Instruments Inc.
360.247.6688