I really like the sound of a Fender amp, Tweed Deluxe, Deluxe Reverb and Pro Reverb. I am also pretty restricted to about a 15w amp right now. I also really liked the Pro Reverb i had with the 2 12 in speakers. Is there a Fender Amp, or clone, with this configuration? Is there a point where there is not enough output from the amp to really use two speakers?