Wyred. Totally wyred or can pair with Cary SLP 98

I want a second, solid state alternative for my all tube system, so that I do not need to wait 30-45 mins for optimal sound. System is Cary SLP 98 F1 Direct coupled into Manley Snappers, currently driving Silverline Sonatina IIIs. I want an inexpensive solid state amp (monos, stereo or integrated) that I can just switch on and liste to music. Wyred seems to have great reviews. For only $500 more one can get the STI-500 vs the ST, SX-500, or mAMP monos. I appreciate any advice, recommendations, etc.