I don't own one. I did play one at NAMM. It was cool, heavy and, a little, strange. To my ear, when the internal amp was on it was about the volume of decent acoustic Uke. FWIW!
I've got one ,,looks good nice to play ,,but very quiet in fact mine stopped working a loose wire or something I bought mine off eBay and it came from Japan I've had a quote of about $90 just to have it looked at plus what ever parts it may need ,,so I haven't got round to it yet my advice stay well clear of it