I have a lot of catching up to do with apps so I thought I'd do a proper job and brake out my 'good' interface to test a few releases on. I'd just updated my iOS version to 9.2.1 and all seemed well. Plugged in the One and messed around with the Apogee control app Maestro, which to be honest has always been fussy for me, and eventually got the interface recognized. Plugged in my guitar, launched the first app on the chopping block and .... woah.
Instead of the lovely tones I was expecting I got a weird echoey noise like someone emptying a buffer.... not pretty.
So off to troubleshooting land. To be clear I pretty much knew this was a hardware thing, but never the less you wont convince a support engineer of that until you've jumped through every hoop imaginable. So yeah ... I uninstalled and reinstalled the Apogee App. Tried dozens of other apps which ran fine with the built in iPad hardware. Substituted alternate connector cables. Switched headphones. Even reset another iOS device (a phone which I had to do anyway ...) but the ONE stayed messed up. Of course I couldn't try another ONE interface because $350 ... but I love the way support people always ask if you have another one 'lying' around! So off to Apogee. After emailing numerous times and waiting for a reply for too long I finally received this:
This is a recent recognized problem that occurs on some iOS 9.2 devices that we're currently working to provide an update to.
*Please Note - If your ONE iOS is giving problems only on iOS 9.2
Apogee has received several reports from customers who have stated that their One works fine on their iPad or iPhone until updating to iOS 9.2 with symptoms being: input stuttering/distortion on all inputs in all apps. In our testing, we’ve found that apps that allow you to record at 88.2 or 96k sample rates (like Auria and MetaRecorder) do not have distortion. However most iOS apps do not provide these options and only record at 44.1 or 48k sample rates and therefore have this distortion issue. You can use your One on a Mac computer normally. We have reported this issue to our engineers and they are working diligently to find a resolution. We do not have a timeline, but it is likely there will be an update soon. We'll be sure to keep you and all registered One users aware of updates improving the stability in El Capitan and iOS 9 as soon as released. We understand the frustration this is causing and thank you for your patience and understanding.
So if you've been pulling your hair out it's not you. There's no mention of this bug at Apogee's site ... disappointing seeing it's meant to be a premium product. I hope a fix is imminent ... I'll keep you posted.