Does anyone on this forum have experience with the new ADCOM GFA-555se amplifier and GFP-915 preamp? Just upgraded to Monitor Audio Silver 300 speakers and have limited budget to upgrade from my old Yamaha integrated amplifier. MA Silver 300's sound great with the Yamaha but I'm wondering if a separated amplifier and preamp will take the sound up a notch or more. Only have a $3,000 budget at this point though. Alternately, any suggesting on other amps & preamps which sound great with the MA Silver 300's? Thanks everyone for considering my questions.