Electronics for Harbeths -- $5-10K


I've been looking for an amp/preamp or integrated to pair with my mid-sized Harbeth speakers (86dB sensitivity, minimum 6ohm impedance, ~50Hz crossover to a powered sub).

I've dug deep into Pass Labs, ARC, Levinson, HiFi Rose, PrimaLuna, Ayre, MF's Nu-Vista line, Hegel, etc. -- the usual suspects. But I haven't found a perfect fit, b/c I have a few constraining requirements:

- weight not much over 40 pounds

- an HT Bypass input and at least 2 line-level outputs (for powered sub & headphone amp); no digital inputs required

- I love well-designed tube gear, but in this case, I'm restricted to SS

In terms of sound -- the most important factor, of course -- I rarely't exceed moderate listening levels in a smallish room (10 ft to seating position).  I do, however, enjoy a large, three-dimensional presentation & uncompressed dynamics, and sonics more like the sweet, tubelike house sound of ARC & Pass than the "analytic" superdetailed sound of Luxman or Levinson (both outstanding companies, but just not the right fit in this case).  One motivator is that after recently switching to more revealing Analysis Plus Silver Apex cables, I find I can no longer stand the sound of my last-gen Class D amps.

A Pass Labs XA25 amp + SP-12 pre combo comes pretty close, but doesn't have quite enough power. MF's new NuVista 800.2 would be perfect if it didn't weigh nearly 90 pounds. 

Then there's Ayre's new VX-8 amp, or EX-8 integrated, sound great on paper, but which I know almost nothing about, aside from specs & a Stereophile review.  Anybody own one of these?

I have no opportunity to demo any of this gear live -- disabled & don't get out much -- but if anybody would like to recount their first-hand experience finding a soulmate for Harbeth speakers, I'll be listening. 

 

cundare2

Ah! So much for my reading comprehension!

Your recommendation is a good one, but I think regardless, an amp upgrade is long overdue. But you’re making me think that I might need to incorporate a cable re-evalution at the same time.

What’s interesting is the fact that the amps sound the worst when fed by 100% Silver Apex cables. Yes, there are a zillion other factors that make each signal path unique in its own way, but still...

One possibility is that the Silver Apex segments sound the most Class D-ish because they’re the most revealing. Unfortunately, it’s not easy to swap them all out, since some have singular connectors, like the tonearm cable.

Regardless, I would hate to give up those expensive cables. They’re so impressive, even mind-boggling, in terms of presentation and detail. No other upgrade that I’ve ever made in this system has done so much to promote a broad, truly 3-dimensional soundstage. After I inserted them into the system, I could not stop listening to vinyl. The endorphin rush -- the thing that keeps so many of us in this hobby -- was intense.

I just hope that swapping a $2000 amp for an $11,000 amp produces as dramatic an improvement.

 

 

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What model Harbeths are you using? I have owned many different Harbeths and they sing with tubes! If you are restricted to solid state LFD should fit the bill! Give Gene a call he has been selling Harbeths for many years !

Gene Rubin Audio

@yogiboy has a valid point.

LFD was my second choice after my REGA OSIRIS., so it is worth an audition 

yogiboy:

Hah -- you’re talking to the right guy! Not sure if I mentioned in this thread that I’ve been a lifelong tube-roller. For thirty years, my go-to system was a beautiful pair of Quad ELSs that I restored, and a variety of tube amps that I either rebuilt myself (like my heavily moded Dynaco boxes) or sent to the factory for refurbishing (e.g., my 1950s Class A Quad 2 monoblocks). I still lust for modern tube designs from the likes of ARC & CJ.

However, I have some physical constraints and there are also configuration issues that limit this purchase to solid-state. And smaller, lighter SS at that. I’ve never had a good experience with Class D, and that’s one reason why I’ve settled on the Ayre integrated -- 130wpc, 24 pounds, 3.5" high, very flexible connectivity, highly praised Class A/AB sonics. This will be something new for me, but I’ve really done a ton of homework on the topic -- so my hopes are high.

I’ve been told by everyone from the late, great Art Dudley to the guy who designed the Ayre integrated, to even Harbeth support, that Ayre and Harbeth are a great combination.

But I can understand your recommendation, too. In fact, Art, shortly before he passed, told me that he considered the Harbeths to be more "Quad-like" (I think he was speaking in terms of coherency and voicing) than any other dynamic-driver system at anywhere near the same price. So driving speakers like these with a great tube amp would be pretty exciting.  Nonetheless, I'll be heading in a different direction this time, so, as they say, fingers crossed, teeth clenched, here we go.

To answer your question, I have the mid-sized Compact 7-ES3, rolled off to a powered sub at around 50 Hz. I went with that model b/c of its reputation for being the most successful model in the Harbeth line -- at least according to Alan Shaw himself. In my moderate-sized room, and with an external powered sub, I didn’t need the extra volume levels and bass extension of the larger models.