A really good delay, specially if one considers its price. Really small, and if you use those ultra-mini "cables" (which aren't really cables, but plugs), it can be for you to step simultaneously at two pedals at the same time. Be careful.
The rubber on the bottom is good for placing it directly over a aluminum board. But, with Velcro, I had to get rid of that because it was not fixing the Velcro on to it.
I would rather prefer if the echo and feedback knobs had a white mark showing the actual setup. Very hard to see. You have to go on feeling!
Those are minor things compared to its usefulness and price range ($30 - $50)
Donner Yellow Fall is a super powerful analog delay pedal that must be carefully controlled. I just about blew the roof off the Guitar Center store when I was testing it. Terrific addition to my synthesizer gear.
Provides good short-time delays. If you put feedback on like 4 o'clock, not much after you play the note the signal goes batshit and it destroys your ears until you bend down and turn the pedal off whilst screaming like a little bitch. So I wouldn't recommend going past noon on feedback. Not with the echo knob high anyway.
One crazy thing I noticed is that it's pretty clear with my TS and my hand-wired fuzz, but when it's on with the big muff it gives some sort of massive treble boost. Like it turns the big muff into a harsh sounding distortion. I swear, it's pretty weird. I tried it with 0 echo to see if my ears were fooling me, and they weren't. This is one weird side effect of this pedal.
You know I actually kinda want to prove this. Can we upload videos here? Is that a thing with this site? Hit me up if it is, not sure if anyone is aware of this.