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Power amp recommendation for Harbeth 30.2s

It’s not that I don’t like my current setup, it’s just that I wonder whether a more powerful amp would give the music more heft.  I’m running a pair of Harbeth 30.2s through a Prima Luna EVO 300 preamp driven by a vintage YBA Passion SS 400 power amp (purchased second hand from a reputable dealer).  I listen primarily to music streamed  from my FLAC stored collection on my NAS or from Qobuz through a Bluesound Node 2 into a Chord Qutest.   The YBA is very transparent and I love the sound of my system, but sometimes wonder on certain types of music whether a more powerful amp would be an improvement.  I like the idea of a SS or hybrid power amp paired with a tube preamp.  I chose the although  the Prima Luna preamp after listening to a Prima Luna integrated against a Hegel H590 (I had previously owned the Hegel H190) and purchased the YBA at the same time.  My listening choices are varied (folk, jazz, alternative, vocal, rock (not metal), so I’m not looking for ear shattering volume.  I don’t like the idea of a tube power amp due to both cost and how hot they can run.  I’m captivated by the Pass amps, but they are expensive.  I’ve also wondered about the Van Alstine hybrid amps.  I’m throwing this out to the experts because I may be overthinking this and should just be satisfied with the YBA until it finally fizzles (it’s pretty old).  Thoughts?
bfleetwood
twoleftears's avatar
twoleftears
5,318 posts
 
The basic issue of preamp/amp mismatch is output impedance to input impedance.  So long as the preamp's output impedance is at least 10 times lower (1:10) than the amp's input impedance, you're fine.  Most (but not all) products meet this criterion.
Beyond that matching preamps and amps is more a matter of taste than anything else.  Often claimed "synergy" is really just something that sounds good to one person.
That being said, many people combine a tube preamp with a SS amp to get the best of both worlds.  With 30.2's, so long as you have an amp with 100-150W with a stiff power supply you should be fine.  And beyond that, as SS amps do sound different, once again it's more than anything a matter of taste.  If you're sticking with separates, there are alternatives to the Hegel.
bfleetwood OP
20 posts
 
 I believe that my YBA vintage amp is solid, well built and transparent.  Its power specs meet the 100 - 150 W criteria.  I am still left to wonder whether a SS amp with more power paired with my PL preamp will sound better (not just louder).  The longstanding discussion of how much power is enough and how much power matters besides playing louder is still a mystery to me.  I recall Alan Shaw in a demonstration where a 500 wpc amp is driving the Harbeth’s.  I want to keep the PL preamp and simply wonder whether the more powerful amp with “sound” better, not just louder. For those who might agree with this concept, are there SS power amps that you believe might fit the bill?
bassdude
498 posts
 
I should note... that the H590 does not route the external preamp directly to the amp of the H590, but to the preamp of the H590.  So... while you can add some tube effects to the H590, you can do so only through the H590 preamp.  But, you still get some of the benefits of the external tube preamp.

Hegel says they do this to assure the correct matching impedence between the preamp and amp - which assures the Harbeths benefit from the H590. 

Whatever... it works well.  
jjss49's avatar
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jjss49
6,612 posts
 
@bassdude

i think the op has said of the excellent hegels, he has ’been there done that’, and likes the primaluna in his signal chain better

@bfleetwood

you seem to have your heart set on finding out what a mega ss amp will do for you... so i hope you pick a good one and let us know... sometimes we get an itch that just must be scratched... its all part of the process of becoming satisfied with our systems

i would say that alan shaw certainly subscribes to that belief... doesn’t really matter what amp, but be sure get a big-ass one and you’re done... a couple thousand experienced harbeth speaker owners here and elsewhere may not quite agree hahaha
jackd
1,074 posts
 
Not sure why your worried about taking the volume knob on the PL past twelve o’clock as it surely doesn’t care and you wont hurt it. If your YBA has a higher than normal input sensitivity then it may be necessary. But if you just want to look at a reasonably priced higher power amp that will work with the Harbeth’s then look at one of Van Alstine’s current higher power models. I own a pair of C7’s and a Van Alstine Vision SET 400 and it sounds really good with the Harbeth’s in concert with a Supratek tube preamp. Frank has multiple other models that will fit the bill all under your limit. All have a thirty day money back guaranty with you only being out the return shipping to Minnesota. The SET 400 is only $2000 brand new. Another good option is the PS Audio BHK 250 on the used market.
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