i sold the analog four mk1 probably 5 years ago by now and miss it way too much so I plan to get the mk2 but seeing as mk2 is $1400 vs mk1 for $700 I’ve been weighing the two to decide which to get it’s come down to the audio interface for me, can mk1 also be used as audio interface or only the mk2? also what made you upgrade if you chose to?