Re: Ok call me crazy....
Rivera fenders are really great amps. PTP wiring, nice cabs etc. But i think where your amp amy be letting you down in your particukar context is that it is a 2x10 amp (correct me if im wrong). Id say just use a 2x12 extension cab and put it on the other side of the rest of the band. That will fatten up your sound considerably. If you dont want to haul two boxes to gigs, then it might be wprth considering trading your concert for a twin- bear in mind that the right speakers are crucial. Im guessing you already use pedals for your overdrive sounds with your current amp instead of cranking the amp so headroom is not a a big deal.
Couple other tricks too: then just enough slow vibrato so you can hear it, then back it down a knotch. Slapback delay. I like vibrato cos chorus can sound a bit too 80s, phasers, well they phase your sound which is a very noticeable effect rather than an always on kind of thing and univibe can thin your sound a little too much. Very light vibrato gives you your rich tone, but just adds a kind of throbbing dimensionality to sustained chords. A slight slapback is good too - particularly one with a tap tempo and ratio controls to fit the song feel.
I play in a 3 piece as well...bass gtr and drums, but we also do quite a few gigs with no bassist.
Some good tips here at 3:30. I know your amp does not have vibrato on it, but thats only one pedal away.
ok...last one....if you really have your heart set on using two amps...try out a marshall bluesbreaker to sit alongside your concert. Lower wattage, and tube rectification, but 2x12 and a much thicker defined midrange will complement your amp. Its lower wattage will also mean it will be closer to breakup when sitting next to your concert, adding a cool dimesionality and compression next to your fairly clean fender amp.
