Your tube amp related Harbeth experience.

My Harbeth SHL5+ can sound a bit on the bright side with SS amplification. I tried them with Luxman 590AXII, and as good as the pairing was it did tend to sound a little bright on some recordings. Moving to a tube amp -- Audio Hungary Qualiton a50i, took care of that issue. This is a sublime pairing and one that I intend to keep until I can upgrade to M40.2/3 in the future.

With M30.1 (haven't tried 30.2s though), I found the opposite to be true. These guys need an SS kick in the gut to really wake them up. Don't get me wrong, they still sound quite good with tubes but you really need big power tube amps. Little guys need not apply here. But they really shine when fed with quality SS amplification. I heard these with Hegel H390 at a dealers last year, and it was a great pairing.

At one point, I was using at BAT VK-60 with my Super HL-5's. Listening to mostly rock, the Harbeths were likely not my best choice to begin with, but they sounded good so I kept them for years; still have them though I'm using other speakers now that are more appropriate to the kind of music I listen to.

With the VK-60, they were even less 'rock and roll' speakers but had beautiful midrange. I've since replaced that with an MSB S-200 power amp and a Herron Audio tube preamp; that made the Harbeths more to my liking....

Tried SHL5+ with PL Dialogue Premium HP and also with McIntosh 275(s).  Awful.  They sounded great with a vintage Sony TA-N77ES, but absolutely stunning with a Pass XA-30.8.  

@arafiq

My Harbeth SHL5+ can sound a bit on the bright side with SS amplification. I tried them with Luxman 590AXII, and as good as the pairing was it did tend to sound a little bright on some recordings. Moving to a tube amp -- Audio Hungary Qualiton a50i, took care of that issue.

if i am recalling correctly from early on when you started posting here, you were/are dealing with a listening room with lots of glass and other hard surfaces, so if this is still the case i am not surprised you need to tame the highs of the super 5s... in general though, i would say most owners of super 5’s would not have that issue, in fact most are trying to get the speakers to have a little more top end energy and marginally improve the jump factor of the speaker

just another real life example of how forums and their advice can only get one so far... folks who want the ideal sound have to work on it in their own space and situation

I had the Harbeth C7s, and I tried several different integrated amps with them.  The only tube integrated that came close to driving them to my liking was the Primaluna Dialogue HP with KT150s.  However, I far preferred a Bryston B100 solid state integrated amp to any of the tubed models.