The question is "I would like to know if anyone has tried". I have tried on different new iPad, and iPad Pro, on different piano and with different apps. I always have a terrible lag.For me this is not playable. The flow is not regular.
I will check again and find why I can't reach 6 ms. Any idea? Thx for your comment.

I have a Roland FP-10 and often use a Bluetooth midi connection to an iPad, iPhone, or to my Macbook Air.  It's perfectly fine, just a hair more latency than with USB cable connection if you focus on it, but easy to forget about. 

If you have terrible latency with Bluetooth midi connection from keyboard to iPad, then I would guess it's coming from somewhere other than the Bluetooth midi connection.  What speakers are you listening to and how are they driven?  Do you experience latency playing Pianoteq on the iPad if you're listening to the iPad speakers or to headphones plugged directly into the iPad?

I often connect my iPad to my pianos or keyboards (Kawai, Yamaha and Roland) , as well in Bluetooth or midi.

Bluetooth is good to change the settings on my piano with Kawai or Yamaha apps.
But to play, the latency is way too long, really not playable. Only a midi cable works.

If you record a solo track in GarageBand for exemple and turn off your iPad sound, then you don't care about the latency, so Bluetooth is ok.
But to use with Pianoteq and hear what you play, with Bluetooth, you can have almost 1 second of latency and it's not regular, so sometime you don't hear anything during 3 sec and then the 10 notes you just played are all coming in the same time.

Raül wrote:

Hello,

I would like to know if anyone has tried MIDI over Bluetooth 4.1 with an iPad. I would be interested in having Pianoteq wirelessly with an iPad and a digital piano with piano touch. There are several digital pianos that have the Bluetooth 4 standard (Kawai ES-110, KDP-120, Roland FP-10, FP-30, Yamaha CLP-745, CLP-775, CLP-785, etc.). I like a lot of those models because they have a pretty good touch, but I would like to know if the bluetooth 4 standard they have would be enough before I opt for any of them. Has anyone tried this setup and got acceptable latency?

Thanks and regards,

Raül

He is talking about MIDI over bluetooth.
So we are dealing here with ~6 ms of latency, nowhere in the magnitude of 1 second.

Bluetooth is good to change the settings on my piano with Kawai or Yamaha apps.
But to play, the latency is way too long, really not playable. Only a midi cable works.

If you record a solo track in GarageBand for exemple and turn off your iPad sound, then you don't care about the latency, so Bluetooth is ok.
But to use with Pianoteq and hear what you play, with Bluetooth, you can have almost 1 second of latency and it's not regular, so sometime you don't hear anything during 3 sec and then the 10 notes you just played are all coming in the same time.

I would like to know if anyone has tried MIDI over Bluetooth 4.1 with an iPad. I would be interested in having Pianoteq wirelessly with an iPad and a digital piano with piano touch. There are several digital pianos that have the Bluetooth 4 standard (Kawai ES-110, KDP-120, Roland FP-10, FP-30, Yamaha CLP-745, CLP-775, CLP-785, etc.). I like a lot of those models because they have a pretty good touch, but I would like to know if the bluetooth 4 standard they have would be enough before I opt for any of them. Has anyone tried this setup and got acceptable latency?

Thanks and regards,

Raül