Hi Zebulon Finally, i got some time to finish the job on my pioneer Sx 1010. Everything working perfectly. I just need to work on the Power Amp Assembly. I can't find transistor SA992 to replace 2sa726. I'm looking for BC 560 but not found yet. I also did not find the SC3503 to replace the SC1451. Would you have other suggestions for transistors to replace 2sa726 and 2SC1451? It could be some overkill. Could I use the 2SC2690A as a replacement for the 2SC1451? Thank you very much.