Every speaker I've paired with the 60-Watt Quintessence has performed at its absolute best.
One of my Field Coil Horn Speakers sounded fantastic with the Atma-Sphere Nirvana 120-Watt OTL amps, but the bass and mid-bass always felt a bit lacking.
The moment I introduced the AC Power Amp into the setup, the bass and midrange improved dramatically. The tonality and timbre became far more pleasing, and the overall presentation felt significantly more musical. Even when relying solely on the AC Power Amp, the system outshined expectations, despite the amp delivering far fewer watts.