Reel to Reel Tape

Frequency response: 30Hz to 30kHz (15 ips); That's 10K above audibility.

FWIW, LPs can do 15Hz to 45KHz; the lower limit described by tone arm mechanical resonance and the upper end by the intentional frequency limitation found in the circuitry of the cutter amplifiers.

Both LP and R2R have more high frequency response than digital at least so far...

well that’s what you like to think that just can’t happens no matter what because the LP signal must be " proccessed "/pass through something to your R2R and that pass though something only can degrades the LP signal. or explain why is not signal degradation is this is what you think. Maybe I'm missing something or it needs a wider explanation from your part.

The reason this can happen is if the audio is down when the recording is made and so there is no vibration affecting the turntable. The better the turntable isolation, the less this phenomena can occur.

IME the Studer is one of the best sounding solid state machines. They look clunky (I have the A-80) but they deliver. The Ampex 351 electronics is more musical, but also can be noisier. To deal with some of the tape handling issues, I set the 351 electronics up with the AG-440 transport. But I find that the Studer gets more use- probably because its just so much easier to use.