Oppo 105 setup

I currently have a signature SL 1 running through a Spectron power amp with Onkyo HT receiver bypassed for stereo with Von sweichert vr4 se stereo and front pair with VSA rear and subwoofer. I use a modded shanling for redbook Cds and have a squeezeboxrunning wirelessly for Hires computer files.I also have a michel orbe for vinyl.

My question is having just bought an Oppo 105 what changes would you recommend to the amplification and connections.

I have thought about selling the shanling, spectron and Onkyo and replacing them with a top notch multichannel amp but would I get as good or better sound quality and what setup would give the best results?