So - I finally decided to solve my excessive noise issue by buying a new MacBook Pro. A very expensive fix . I took my iMac in to the Genius Bar and they think my graphics card fan is going bad and for some reason that's where the EM is radiating from. That's a $600 fix plus service charge - plus they let me know that in 3 months my 2011 iMac will be considered "vintage" and they won't be allowed to work on it anymore. It's a shame. This iMac still functions like the day i bought it. It's fast and just works great. But...that noise...is so freaking... annoying!!!!
Part of it is my favorite guitar too - it contributes by having some faulty wiring that I've been too lazy to tackle. Could say that about so many things.
Anyway...on to my question. The new Macs don't have Firewire anymore. Just USB-C and Thunderbolt. I have a Firestudio Mobile as my primary interface to the Mac for the Kemper and output to my monitors. So - i need something quality to replace it with. I was looking on Amazon a the Focusrite for about $500 - it has a Thunderbolt interface (I believe) but I wondered what people here with much more experience than I had migrated to. I'm no pro with no pro aspirations but I do want the best sound quality I can afford with minimized latency. I'm a very inexperienced when it comes to recording but now that I've decided to pick up my guitars again - I expect to do a lot more in the coming year.
Thanks much!