Belongs in Car Audio section.
There's hundreds of posts on this forum about this amp. Have you read through them?
Google search for Soundstream mc 245 on DIYAudio.com
There's hundreds of posts on this forum about this amp. Have you read through them?
Google search for Soundstream mc 245 on DIYAudio.com
If no one can answer definitively, what are the other output transistors? Likely TIP102/107 or TIP142T/147T.