MA6900 Jumper

Anyone tried replacing the jumper plug in the back with some after market jumpers?
I saw one made by XLO advertised in a magazine. I wonder how it sounds?
Kenny at Monza Audio makes a silver jumper for the
6900. It opened up the sound. It was like putting in a $1000 IC. A big improvement for
under $50. You can email him at
I haven't tried replacing this jumper on the MA6900. Howewer, I tried replacing similar jumper in an other integrated amp and the difference was very worthwile. More air, more resolution, more details. You should definately try.