2 channel Studer A820 recording at 45 IPS on 1" tape.
Tape duration is only about 22 min for this extremely expensive tape format, but simply NO OTHER MEANS can record and reproduce like that! Droooooling :-)
Music is an introduction to the 2012 Novellara Blues Festival.
Audio is coming from the main monitors of my workshop but it was too loud for the microphone of the iPhone, hence some passages are slightly clipped. Being here resembles the LIVE performance...
The empty reel I've placed on the left is for normal 1/4" tape, 10.5" in diameter, just to make comparison.

Note that the recorder is still to be refurbished, so the pinch roller is not the right one, two lamps inside the left meter are blown, capacitors are still to be replaced and so on. Also the tape is not a proper audio tape, so bias and levels were not set correctly. The video is just to see how the unit is running fast.

EDIT: as of July 2021 the recorder is still to be refurbished and modified. Too little time available to invest in research now. Before going to extreme 45 IPS standard, it will be set to act as an editing recorder for the tapes recorded with this particular A80:

   • Studer A80 1" open reel stereo recorder  

More pictures of this and other machines can be found here:
http://www.monoandstereo.com/2015/10/...