Got my hands on a Hotone Octa and it's disappointing. I'd hoped it could replace my MXR BOD which I like, but was hoping to go all 1590a size or under - all my other pedals are.
The main lower tone itself is nice, but subtle. It's not as well defined as the MXR, which cuts through so you get the two basses locked in unison effect. The Hotone sound is more of a blend adding depth, and there's a touch of modulation. That's not just the way I had the knobs adjusted - the octave tone wouldn't go any louder. The dirty switch to 'analogue' is a plus, and that cuts through more - but i wasn't looking for this sort of sound..
However, there was a similar issue to what I found on the Mooer Pure Octave in that the pitch of the octaved sounds is off. I'm not just talking the hint of detuning which can give a pleasant thickening of the sound. The octave up is so out that it's embarrassing.
The tracking is not wonderful on the Hotone either. I'm using Chrome Flats which in my experience pitch-track better than brighter rounds, and I go through a Xotic SL which usually gives sufficient sustain that octaver tracking doesn't wobble as extended notes die away.
I'm probably expecting too much of a £65 device comparing it with a pedal twice the price, but then some of the Mooers do bear comparison with more expensive options. This Hotone is not even close.
So I'm resigned to the fact that I'll not get an all 'micro' set up. At least the MXR BOD at 6cm wide is still fairly compact.