All i'm using right now is electrocompaniet 220w's as mono blocks and they sound superb.I' wish i had something with a little more current like the PASS 300w monos'That would be really special.I had them hooked up to CARY amps but for some reason the electrocompaniet sound much better.-Rontoolsie,i wish you could here these with the base module, they take them to the next level.Also wire is important with these speakers, the external crossovers need to be tri-wired so i'm using MIT mh-850 wich compliments these vey nice.Sweet ,open and airy.very 3 demensional sound.