If I want super clean sounds, I fire up my Korg M3. The sounds are so clean, you could eat a meal off of them. No, seriously, they're downright clinical.
DNA is probably a different experience for each OP-1 user, as the synth is built off of the processor ID, and the ID is different for individual OP-1s. Perhaps one exists in this world that has a DNA synth that will give you a clinically clean pad sound or something. Mine is aggressive and in-your-face - I'm ok with that.
I admittedly didn't use my OP-1 much either, until I realized how useful the Tape actually is. The OP-1 was designed to be a portable music workstation, but in kind of an old-school way, in that you have to use the Tape and its tracks to put music together.
There is a "musique concrete" thread on operator-1.com that is full of great ideas that utilize Tape. That thread inspired me to devote more time to the OP-1. So much fun to record a few minutes of audio to Tape, then auto-slice the recording to Drum Sampler, then use the Tombola sequencer to trigger slices from Drum Sampler, with the option of recording the Tombola-generated audio back to Tape for further experimentation.
BTW, one of the ways to get around the 6-min. audio limit is to create sample chains, then have Tape loop over a region as long as you want it to. That's how the acoustic guitarist I saw with an OP-1, was able to play a half-hour set using it to provide percussion, as well as process his guitar - he had it pick up his guitar sound through its internal mic, then run the mic'd signal through delay and maybe other FX.