Originally Posted by Kang
How reliable are SP amps? Are breakdowns rare or common? I'm concerned based upon Neil's and Mikeymad's experience, and the apparent long repair time.
I have owned a couple steel chassis MPX3's that are still being bought and sold on the forum.
I now have two black chassis MPX3's from 2004 .... and no problems since I have owned them. I updated both with the 12 volt option sometime in late 2004 or early 2005.
I have three PPX3 SLAM's, two purchased used in 2007, one new in 2005 .... also no problems.
I have an Extreme purchased and received Jan 2007 that has worked flawlessly despite the almost constant tuberolling.
I have an original steel chassis Supra that I bought used. The amp arrived damaged from shipping. They shipped the amp vertical with the volume control down.
I had the amp repaired (fractured diode in the cooling fan) and updated with the original 6bl7gta high voltage mod. This amp has worked flawlessly since the repair/ upgrade.
All of these amps remain dead quiet. I cant stand noise or hum. If I hear either the amp usually doesnt stay around long.