That sucks about the system. Maybe you had a one off bad amp or something..?
I've not heard Soundz but know they we're the belle of the ball when the GTS came out and the GT owners were pissed it wouldn't be backward compatible. Soundz figured it out and sold headunits. Harley-Davidson eventually made the GTS backward compatible. They also were the first with the WHIM bypass dongle. - So they're innovative.
Did they change out any components..? Did they come have a listen after your initial issues..?
I gave up on motorcycle audio - My 09 got the HU sent in to Iron Cross for their 'fix'. Then I bought the AVAquatics headunit [colour faceplate] for bluetooth audio. I still have the 09, but I later bought a '17 FLHXSE. Underwhelmed with Boom II and blew a rear speaker after two years.

Seemed like a good reason to trade 'er in for my current 2020 FLHTKSE. Boom II IS better than Boom I. ha ha. But I run a SENA 30K and use earbuds. --
https://www.shure.com/en-US/products/earphones/se846 My 09 I had two Hawg Wired systems. The Direct connect system and the reference system. They are pretty good and loud for two speakers. I'd consider them if I was doing audio, or like mentioned Biketronics.
I dunno - Audio is a pain to make it sound awesome at 80 mph. And if there wasn't a faulty component - or improper setting - $3800
should have made you smile from ear to ear!!Good luck seeing what is going on at the M&G. I too am on that other forum...
