Prime Studio are offering an online service to process you tracks through their vintage and modern analog gear, they call it the Sparkle Service.
I have been fortunate enough for the guys at Prime Studio to have processed some of my tracks through a Fairchild 670 and a Pultec EQP-1A, and I've got to say im blown away with what ive got back. In this video above you will see me comparing the different processed versions and comparing it to the original pre processed vocal.
Here is the list of equipment you can have your tracks processed through.
Neve 1081, Neve 1064, Neve 1077, Neve 31102, Focusrite ISA 110, Pultec EQP-1A, GML 700.
Fairchild 670, Avalon 2044, Mercury M66, Neve 2254, Neve 32264a, Summit Audio TLA100A, Urei LA-4, Urei 1176LN.
AKG BX20, EMT 245, Lexicon 300, Roland SDD320, EMT 245.