I'm a huge fan of Harley Benton - I've owned over a dozen in the past couple of years - and I'm an especially big fan of the ST-20HH Active (which I firmly believe is unbeatable as a budget metal guitar). When HB announced this model, I was super excited... then dismayed once the grounding issues came to light. By that point, I had already placed an order for this, so I decided to see it through and see how it would work out.
The guitar arrived in great condition, with perfectly playable action and nothing out of place. The finish looks and feels great, really nails the aggressive metal look without getting too over the top. Fret ends are good, though they could use a little bit of cleanup for that perfectly smooth feel. It balances very nicely on a strap, but because of the body shape it's a little bit neck heavy while sitting down. (If you've ever played a Jazzmaster, you know exactly what I mean.)
The most important part, though, is the sound - and I was fortunate enough to receive a guitar that exhibited zero grounding issues! Plugged it in to both my available amps and my audio interface, and there was none of the dreaded buzz that these guitars have become rather notorious for. (I even ordered a second one after the fact to see if I could double my luck, and that one didn't have the grounding issue either - so either they resolved it, or lightning struck twice for me!)
The HBZ actives punch above their weight - the neck is pretty smooth and has a nice compression to it for cleans and leads, and the bridge has plenty of crunch and attack for the big chunky rhythms. They're a bit dark sounding, so that's something to be aware of, but they're plenty good enough and compare quite favorably to my guitars equipped with big-name actives.
The rest of the hardware is pretty great - the pickup switch is incredibly responsive and has a satisfying *click* when changing positions, and the Hipshot-style bridge is incredibly comfortable. The tuners are fine, but nothing to really write home about, and a couple of them are fairly stiff - they're probably the only thing on the guitar that could really use replacement.
All things considered, the JA-20HH is a great addition to the budget active line Harley Benton has been building up over the past year or so, and I'm looking forward to seeing what gets added to the line in the future. (A side note for Harley Benton, though... could we *please* get some other finishes?! Even just a satin white option would be welcome!)