When I first heard of Crescendo I took the reviews lightly, and brushed them off as disgruntled customers.
After dealing with them in depth over a bad amp I can vouch that they possibly have the absolute worst customer service or customer loyalty.
I sent an amp in for warranty repair, took them 6 months to return it to me! This was after multiple attempts at inquiring about the status of repairs. They assured me "next week", "next week".
Finally they call me, but more bad news the problem isn't warranty. ..hmmm ok at this point I want my amp. I'm tired of waiting. I get it in the mail, not in the same condition I shipped to them. Needless to say UPS is not very careful with packages to begin with, I received the amp damaged.
Crescendo says they will settle with UPS and compensate me for the loss. After which time we go another few weeks with no answer, I filled with the BBB and was politely asked to remove my negative review of them in return for a store credit.
Still to this day I have seen zero in compensation from this company. I've left multiple voicemails requesting a return call.
My suggestion stay away from this company, sticky with Sundown, DC, DD, hell I've had better service from Rockford and kicker