This 8ch micpre Thunderbolt 2 Audio interface is amazingly versatile, as a convertor it works with ADAT, S/PIDF and Word Clock.
Also has a MIDI I/O as well it acts as a stand alone 8ch MicPre

The rack-mountable TAC-8 audio interface is designed to act as the central hub in both professional and home environments. It provides 8 analog inputs and 10 analog outputs, 10 digital inputs and outputs (in both S/PDIF and ADAT Optical formats), and both Word Clock and MIDI I/O.

Whether you want to record large scale multi-channel 24-bit/192k sessions in your studio without worrying about latency or you want to bring your onstage performance to new heights, the TAC-8 allows you to take full advantage of today's latest technology.

With 8 analog inputs, 10 digital inputs, and the ability to record and play back 8 channels simultaneously, the TAC-8 allows you to record what you want, when you want. Lay down full backing tracks—drums, bass, guitar, keyboards, even vocals—at the same time, or go big with an 8-mic drum setup, or anything in-between. Thunderbolt's speed ensures you won’t have to deal with latency issues, and the TAC-8's built-in software mixer and flexible output options let you customize each session to your needs.