Hi All,
Want to give a little warning - Do Not purchase MAT-02s from UTSOURCE International(S) Pte.Ltd.
I just spent way too much time, money, pulled too much of what little hair I have left in figuring out why one channel of four was not working correctly. I checked , re-checked replaced components, bought new PCBs from Gustav, could not find problem with this one channel.
I had found three MAT-02s from a US source, purchased them, I think I paid $12.00 each , and the packages they came in looked like they had been on the shelf for years. Wanted to build a quad though, so I searched and found UTSource, they had a California office and were $8.00 each, I bought six, - WELL - I put two " Vintage " Mat-02s in channels 1&2, and two from UTSource in channels 3&4, channel three was the one giving me problems. Even after all I did, I swapped out the Mat-02 THREE times and still had same problem. In a last attempt I tripple checked all new components in a new PCB and got the same result ! - out of despiration I replace the Mat-02 with the last one I had, that happened to be a " Vintage one " and it WORKS !!
So it seems only ONE out of the SIX I purchased from UTSource were good. I am calling them today to atleast let them know, but dont expect anything.
Well, now I have four functioning SSL-9ks, they sound great, and have parts enough for two more - except the Mat-02s
EDIT : I have found that Analog Devices now has a replacement for the mat-02 - called the MAT12AHZ and have submitted a request for samples - will let you all know if I receive them