The amplifier board from a Mitsubishi MC-7500 showing a large STK style amplifier module attached to a heat sink

Notices where this attachment appears

1. Embed this notice
   MattChippytea (wifiwits@infosec.exchange)'s status on Sunday, 02-Nov-2025 06:35:25 JST MattChippytea

   in reply to

   Squeezed to the heat sink here is a Sanken SI-1125HD. One of a number of hybrid amplifier modules very popular with manufacturers of the era. It contains most of a stereo 25W amplifier packaged up very nicely. These have not been manufactured for many years and are unobtanium. So, if this has died I’ll replace the entire board with something new and likely class D. Fortunately it looks like that would be easy to do.