Looking for the best option to power a Stryke Audio AV-12. I currently have an HK-430, Adcom GFA-6000, and Adcom GFA-5002. The 5002 is bridgeable to 175 watts at 8 ohms so I am assuming it is around 250 watts at 4 ohms. I also doubt this is enough power for the AV-12. What are my best options for around $250-300?