Better than expected thanks to iPad

I had bought this interface for connecting an older keyboards (without USB) to connect this with a Win7 PC.
The driver installation was unfortunately very cumbersome, however, can be found on the manufacturer's website provides many useful tips.
After several attempts and successful installation, the connection is working properly.
The first test of the software Cubase were not quite as hoped. The latencies are too high.

I am writing this review because I have now (ie a few months after buying the interface) bought a iPad Air2 to my hardware synthesizer to control with the appropriate manufacturer's app.
Since I had the idea that UN Interface on iPad to test ... and lo and behold ...
My old keyboard [MIDI Out] on the UNO interface,
then on the [Apple USB Camera Adapter] at the Lightning connector on the iPad Air2.
It works perfectly. The latency times are extremely short. I use synth apps like "nature" made by Waldorf ...
Ancient Keyboard Synthesizer has become a super now.

Originally I wanted to 2-3 star awarded because it worked, but not as desired.
In combination with the iPad I give full 5 points.