Using AU/VST in Audirvana is a great thing Currently it is a bit…well…it is the beginning…but this will change for sure over time and it is the right way to go imo.
Maybe some tipps for you:
-If you get on Mac Apple Mainstage you get all the AU from Logic Pro. This is for beginners a great set! Mainstage is not expensive. Right now 32,99.- MainStage - Apple (DE)
-If you connect Audirvana´s output to an virtual audiocable (Mac, eg. Blackhole for free - https://github.com/ExistentialAudio/BlackHole) and take it as input for your DAW you can play with plug-ins too. You may even do so with Garageband (however limited to 44.1 with GB). Try Logic and change Project´s bitrate to desired. Using a DAW you have a fixed Bitrate! So, maybe you play around with plugins and when you have a set you like move it back to Audirvana itself. Saves RAM too and you have variable bitrates back If you want to use VST, VST3 on Mac with Audirvana take e.g. Ableton or BitWig or whatever…Anyway key is the virtual Audio cabel. But keep a close eye on the bitrate…(For the criminals among us, once you are in the DAW you can record your streams…lol…)
(-Most DAWs are limited to 192 today. Which is more than sufficient imo. However Steinberg Wavelab can do 384…For this DAW integration here, you may pick the least expensive editions, as you use just one track - the Audirvana stream, however keep an eye on the supported bitrates and the plug-in integration features… e.g. Vergleiche die Versionen von WaveLab | Steinberg +++ However Blackhole virtual cable can only go up to 192. Did not look for other “cables”…)
(-Are you still able to use the remote control on you iphone? Sure, no change here )
(-Here another thought on this please. If you go the routing way to a DAW, the plug-ins are applied >>after eg. upsampling with Audirvana. I would say, this is better to do the plugins after and not before like in Audirvana itself. But I am not sure about this. One for sure, if you apply “after” you need more CPU and RAM as the stream is much larger of course…On the other hand you provide to the plugin the “highest” quality…hm…maybe in a future release Audirvand will provide two slots for inserting plug-ins…one before upsampling and one afterwards…lol…also, i would like to save sets of plugins with their presets… and … and …and…saving the equalizer settings per track…like apple music can do it for local files…lol…)
Hope interesting for you, have fun!