Clean feedback

[Dali]

I'm a very satisfied Fernandes Sustainer guitar guy but what about my other guitars?

Anything that could be clean/natural, similar to any of those?

• Plus Pedal
• Fender Runaway Feedback Pedal
• Digitech FreqOut

I already have an old Boss DF-2 Feedbacker (https://www.pedalpcb.com/product/backfeeder/) but you can't really play clean so I'm looking for alternative.

I was not aware of the FreqOut until about an hour ago. Looks like what I'm looking for (except I really liked the idea of the Fender one, in a Expression/Wah enclosure!).

Are these kind of effect dependent of FV-1 chips?

Is it too specialized to be interesting to the mass?