Using two Luxman integrated amplifiers together


I've never done this and don't know if it even makes sense or not but I thought the members could share some insight.

I have two Luxman amplifiers: a 550 axII,class A , 20 watts and the LX-380 integrated tube amp 18 watts. 

These can be used as separates so if I used the LX-380 as a preamp and the 550 as an amp would there be any sonic improvement? Or any other benefit/downside? Or would I just be wasting electricity?

I'm rotating the following speakers: Harbeth 30.2XD, Dynaudio Heritage Special and Devore Super Nines.

Thanks

maholl50

May I ask how does the Harbeth M30.2 XD compare to the Dynaudio Heritage Special? Which one do you like better? I would expect the Heritage Specials to have better bass and dynamics than the 30.2 XD but which one has a higher involvement factor with better refinement and detail?

Harbeth is one of the best with human voice reproduction. Are the Dynaudio HS capable of matching the Harbeth in this area?

@ryder 

im trying to find the time to do a comparison between the two amps and the two speakers but I’m working too much.

actually the Harbeth sounds the best to me paired with a  musical fidelity 6si amp I have but the Luxmans tone controls let me tweek the sound to my taste. The Harbeth may be a little brighter and with some songs I prefer the Harbeth over the Dynaudio. There’s just something special about the DynaudioHS that lets me just enjoy the music though. 
Initial impression is that I don’t notice a difference with the two amps together vs separately. But it’s kind of fun to explore.

@ryder 

Finishing up a long week, relaxing, listening to Ice Cream Man by Ronnie Earl and the Broadcasters via Qobuz on the Dynaudio HS's  and it's like "damn that sounds nice".