JBL L100 Amplifier Recommendations

I recently purchased the JBL L100 Classics. I have paired them with my existing Cambridge CXA80 and MyTek Brooklyn DAC+. The Mids and Treble on the JBL’s are great, especially with the DAC. However the bass response seems to be rather flat on these JBL’s. I’m thinking it’s simply the Cambridge not having the ability to drive the 12” woofers on the JBL’s as well as a more powerful amp. I’m looking at perhaps a Bryston 4B3 amp one day instead of the Cambridge to improve the bass response and overall performance of the JBL’s. Is my thinking correct? Would this help the overall performance of the JBL’s? specifically the bass response? Or is it just how the JBL’s are in general? Alternatively I’m thinking of getting a little sub . Although a woofer that big on the JBL’s you’d think you’d never need a sub. Keen to hear what everyone thinks.