This video, via thesoundtestroomUS, takes a look at Midimux and Audiomux, two new apps that are designed to route MIDI and audio, between iOS devices and Macs, over USB:
Using Ableton and some old favorites in FunkBox and Magellan, we first take a look at getting set up to send and receive the midi data, before tackling the audio transfers about five and a half minutes in. These apps are so simple to use, it’s really a monumental achievement to be able to use your iDevices and Mac so seamlessly together. With this combo, you can now use your iPad or iPhone as a true extension of your desktop DAW, without the need for audio or midi interfaces.
Midimux is available now. Audiomux is currently being reviewed by Apple.
1- What’s the latency like? Is it livable?
2- Does this spell the end of the huge price gap between desktop VST’s and IOS synths?
1. Yes

2. No
Going to get these soon.
As to the price difference between iOS synths and vet’s, -I understand the advantage of vst’s for running multiple instances in a DAW, but have to admit to an ignorance of other benefits. Anyone care to enlighten me? Sound quality seems pretty good on iSEM, and Thor, but have not tried their AU/VST counterparts…
Inquiring minds want to know!
I put Midimux on my iPad 1 & MacBook Air last weekend.
First, I had to deal with the fruitless attempt of the two, now-incompatible devices (using the 9-pin) trying to sync in iTunes. But I somehow I managed to get iTunes shut down and the two devices play nice together over Midimux.
Once I got things going with Midimux, it worked great! What latency there might have been seemed unnoticeable.
Which brings me to a question: Would it be better to use the Camera Connection Kit adapter & a normal USB cable with Midimux with an iPad 1?
When Audiomux is released, I’m getting it!
If it can be done with a cable+black box combo to supply the correct voltages on the correct pins and without need for any app (eg. iConnectMIDI), then why aren’t more developers developing it?