Hi,
While playing or recording a synth to tape, I regularly switch between synth and tape mode (e.g. to tweak the synth, then adjust something on the tape, then tweak again, etc.). When I do so, the level of the synth I’m playing changes. I guess it makes sense, but I’m not sure what the “rules” are in terms of levels, and it sometimes can be tricky when you’re playing and the level goes up suddenly… Can anyone explain me how this works?
Thanks!
The tape record level is set separately by the orange encoder (its the orange bar on the right hand side when in tape mode) which could be causing the volume change. The other possible area to look at is the the volume of the track itself which is controlled from the mixer page.
I don’t believe what @wolflegjon mentioned is the issue you are referring to. When you play a synth while on the tape screen the sound is at a certain volume. But when you switch to the synth screen to do modulation, add effects, etc., the volume jumps up significantly. I am not sure why this is and would also love to know the answer.
It’s because of how the sound path is set up. @wolflegion explained correctly how to adjust the volume. On the synth screen, you hear the pre-tape & pre-mixer level, which can be quite loud. Press shift+mixer for an animation of the sound path, if you want a more thorough explanation @T_rey. =)
On the synth screen you hear the sound post the level set by the orange knob when in tape mode and pre the level set by the appropriate track level set in the mixer section. You also hear it pre any panning incidentally, but perhaps weirdly, post any master effects.
Yeah, I stand corrected… Forgot that the tape gain affects the synth screen too! Sometimes u need it when a synth patch is too loud and starts to distort…
Oh that is strange! I guess it is unfortunate but it is better than the synth mode always louder than tape mode. Just another weird OP-1 characteristic.
My concern with this is in a live setting because you wouldn’t want to switch screens to change synth parameters and have the output suddenly change. But I suppose with a bit of work you can make sure the other tracks are at appropriate volumes relative to the one currently being used.
Thanks @DamianR!
Glad I was able to help in some small way. I’ve only had my OP-1 for 2 weeks but have learned so very much from this amazing community.
Wow thanks for all the answers, I’m not visiting the forum so often lately and I just find out now.
Oh that is strange! I guess it is unfortunate but it is better than the synth mode always louder than tape mode. Just another weird OP-1 characteristic.
My concern with this is in a live setting because you wouldn’t want to switch screens to change synth parameters and have the output suddenly change. But I suppose with a bit of work you can make sure the other tracks are at appropriate volumes relative to the one currently being used.
Thanks @DamianR!
Yeah that was exactly my concern, being able to play live a synth while a loop is playing and switch between both modes without those level jumps. I guess I’ll have to find a personal workaround for this !
@DamianR Yes, this behavior is so much PITA for doing something live. I just can’t imagine any advantage to hear synth before mixer section. It’s one of biggest cons of OP-1. Actually, i would agree to lose one of synth engines an have this behavior fixed in replace:-) Do you hear us TE? There is a still time before the update:-)
Don't take any synth engines away from us TE!! Ignore @tralivallo 's crazy demands! :D

Hi all
Thank you for following up and for condensing the thread.
Correct: On synth you hear POST orange tape rec level, PRE active track volume, PRE active track panning, and POST master FX. This routing is by choice and is currently the only way to be able to record the synth onto tape. A workaround for jamming as you mention is indeed to have at least one of the tracks set to center pan and 99 level.
Hmmm!
To be honest, if we I had to pick an option, the current situation is the one I would go for.
Fair enough.
i think the sound path makes sense but…
This is what the discussion is focusing on I think @speckdrum .The mixer level and pan is ignored in synth mode, so mixer channel needs 99vol and centre pan to be exact when jumping from synth to tape/mixer.
Oh sorry.may of just miss-read your post, sorry.
No, I haven’t noticed any finer discrepancies in tape mode.


You right, i noticed that too. Quite annoying to have increase the gain at monitoring above what u expect to render on tape