Generally speaking, a more powerful amp may give better bass but it also depends on the character of the amp itself. I am pretty sure you will get better and more defined bass if you substitute your 35W NAD amp with say a Krell integrated. Also, Jaybo is correct in that you won't need to crank up the volume higher to appreciate more bass with a substantially more powerful amp. Even that, your speakers may be limited in bass response, and the suggestion of adding a subwoofer is good idea if the frequency range of your Rega speakers does not extend down to 35Hz or so. Adding a more powerful amp won't help much if your speakers ain't up to it.
mo' better bass: any substitute for watts?
Generally speaking, and all things being equal, will higher wattage amps generally produce more, better defined bass than lower wattage amps at a given volume level? I don't seem to hear much bass until I turn my amp up to a level that doesn't suit my listening habits. Wondering if this could be improved by upgrading my old NAD 25(or is it 35?)wpc Powerdrive amp with a newer, modest amp in the 100 wpc range or so. I'm thinking about driving a power amp directly off of an Oppo 980H. Speakers are Rega R3's which can produce bass in my small room when I crank the volume and/or bass tone control. Thanks!