I'm not sure what videos you've watched referencing what gear, or which analog synthesizers you may have seen or heard
A lot of the modern Moogs, the Elektrons, some of the Dave Smith Instruments, etc
Is that what you're asking about?
Yes, that's precisely it!
It depends. Some analogs have (endless) encoders rather than potentiometers for the controls - so they'll automagically reflect the right positions (or rather they don't reflect any specific position, usually).
Ah! I've come across the term "endless encoders" a handful of times since my newfound interest in synthesizers (and electronic instruments in general), and I suppose this could be its main reason for being.
Could you mention what some of those analogs with endless encoders are? I'd be very interested to look into them. Also, I'm trying to look into analog synths with digital controls (not sure if I'm using the right terminology), which would aid in more convenient preset recall, like the Modal 001 and Parva synths. I've also read that there are some that utilize LEDs around the knobs to show where the new preset position actually is. If you know of any such synths, could you name them?
My only preset-capable analog with pots is currently the Moog Sub37, and it has three modes that affect how the knobs respond to changing presets/not being in the right position: an absolute mode, in which the adjusted parameter jumps to the physical position of the knob as soon as you change it...
I am so happy and elated that you mention the Sub 37, as that is the very synth that I'm intent on getting, but when this uncertainty over preset interaction arose, it gave me pause. Being new to synthesizers, I started to think I should consider a synth with a more accommodating learning curve, but after your mention of those 3 modes, I think I'll be fine.
The only mode I don't understand is the first: Absolute. Let's say a new preset has been loaded. The "Attack" knob was already fully turned to the left (for clarity in this example, I'll call it 9, as in a watchface), but in this preset it is actually around the center position (12). Does Absolute mode mean that when you start turning the knob, even if you move it barely to the right (to 10), this new position (10) will be considered the center position the preset is actually at (12)? If that is the case, what if you wish to move 90 degrees left relative to the preset's center position (12)? Since you were at the far left (9) before loading the preset, and now you're at the 10 position, how would you move 90 degrees left since it's not an endless encoder?
Also, thanks to your mode mention, I was able to keyword search those exact modes in the Sub 37 manual, and it mentions:
"Relative and pass through modes are recommended for live performance, while absolute mode is recommended for creating new sounds."
Do you agree with that? And, what do you think would be the best mode for a beginner when recording? In my imagination, Pass Through seems fairly accessible.
Thank you both very much!