timidiI read your appolo review. It was a good read. Still made me wonder if firewire is the same thing as ADAT and why don't mfgrs do more with ADAT. And, if the appolo USB interface has ADAT, why would I want USB. Those are just some random thoughts anyhoo.
Good questions, I may need to rent you for the Q&A segments at my workshops.
Firewire and USB are bi-directional protocols for handling
computer data. ADAT is a unidirectional optical protocol that handles 8 channels (at 44.1 and 48 kHz, fewer at higher sample rates) of digitized
audio data. So, USB or Firewire is how your interface connects to your computer. ADAT is what allows sending 8 channels of digital audio from one piece of ADAT-compatible audio gear to another.
For example, suppose you have an Apollo Twin. It has two mic ins. Legendary funk drummer Mike Clark shows up at your house with his drums, and you panic because you don't have enough mic pres. Fortunately you remember the Cakewalk Blog post I wrote on audio interface basics, where I used audio analysis equipment to measure the performance of TASCAM's mic pres so no one could accuse me of being biased. Also having read my review of the TASCAM US-20x20 in a previous ezine, you realize it has 8 of those preamps,
and an ADAT output.
Eureka! So you order a US-20x20 from Amazon, a drone delivers it in 26 minutes, you plug the US-20x20's ADAT out into the Apollo Twin's ADAT in, and 8 channels with excellent mic pres now show up in the Apollo console software, where they can appear as inputs to SONAR.
You set up the mics, Mike plays an incredible drum part, and decades later, musical historians concur that Clark's part was
the crucial factor that propelled your single,
"The Word 'Awesome' Must Die," into being the
#1 song of 2017.
Isn't technology wonderful?!?!?