I want to decide whether to replace my damaged Yamaha Power Amplifier with an exact replacement model, or get an entire new model. I have owned Yamaha separate stereo components for about 20 years. They comprise of the power amp model mx 830, a stereo control amp model cx 830, and tuner model tx 950. And they are connected to my two relatively recently acquired Spendor A5 speakers. When I bought my LG big screen TV, I bought a separate Onkyo tx-nr646 receiver to handle the tv, a 5:1 sound system and DVD. My Yamaha system was for my records and CDs. My Yamaha power amp has now been destroyed (long story), so I am asking if it would be prudent to simply replace my Yamaha 830 (or a 630) with the exact same model, which I can find on eBay, or simply scrap the whole system for a new system, or simply be economical and connect everything to my Onkyo receiver. I am uneasy to replace the Yamaha with an equivalent model because of my perceived notion that any future maintenance will be difficult for a discontinued Yamaha. On the other hand, I now have two pieces of Yamaha equipment that are useless. Can I replace my destroyed Yamaha power amp with a good recent (and reasonably priced) different one or yet another Yamaha power amp? Or is the Onkyo receiver really adequate. I love the sound and efficiency of my Yamaha unit, but I could be convinced that my Onkyo integrated receiver is really all I need. Thank you all in advance.