I like to experiment and learn so swapped out the Levinson 585 for a used Ayon Audio Spirit 3. The Spirit 3 is an integrated amplifier operating in Class A that can be used in either triode (40 wpc) or pentode (65 wpc) mode. I have tried both, don't hear any difference, so use it in pentode mode. Power tubes are four Tung-Sol KT-150. I have had the Spirit about a week, listening to vocals, chamber pieces, orchestral, organ, live recordings of old rock. There is evidently some synergy between the BePure2 and tube amplification. I don't know if this is due to the Purifi drivers, the beryllium tweeter, the cross-over design or the combination of these things in Jim's cabinet construction approach. The result is that the music sounds more organic, more live to my ears than the 585. The Ayon does what the Levinson did very well (soundstage, mids and bass)) but more so. This is evident at low listening volumes (70 dB at my listening point) but really comes to life at higher volumes (95+ dB) to the point of reproducing live concert-like presentation. Listening to recordings of concerts I attended takes me back in ways the Levinson didn't.
Agree with the other commentators that, if you own BePureX, try tubes.