Looking to Develop A Short List of Amplifier Candidates For A Pair Of JBL 4367 Speakers


Over a number of years I have owned JBL 4365 and eventually moved on from them. I tried a pair of Martin Longan CLX ART, but my room was not well suited for them. A failed experiment with a lot of lost hours in it. I ended up coming home to JBL and acquiring a pair of 4367.

They are a lovely speaker and are well suited for my 15' by 19' by 8' room. Controlled directivity from the horn augmented by minimal room acoustic panels and a light touch with the Trinov DSP system works for me.

The amplifiers I have been using are a pair of Classe Omega monoblocks. But the reality is they are massive, are way too much power for a pair of 94 db efficient speakers, cannot be moved by me alone, and are just wasted in this application. So they have been sold and are pending pick up when the new owner gets back from vacation.

So I am developing a short list of amplifiers. Going through the whole gamut, tube, solid state, and Class D. On the 4365 I once tried a pair of Audio Mirror Reflections since in my past I was a user of Single Ended Triode amps. But even with "larger" SET power, the woofers on the 4365 were not well controlled at all. Another failed experiment. With the 4365 I had used a PS Audio BHK250 with decent results, a pair of AVM Audio Amp Essential monoblocks with excellent results, and a H20 Audio 250 Signature Class D amp with interesting results. The AVM and Classe have provided the best results so far.

So the question is, are there Class D amplifiers that meet the sound quality requirements these days. I have seen some amps using a Hypex or Purfi module with a tube front end. Also have heard the latest generation Orchard monoblocks are worth looking at. Anyone have any other candidates, or thoughts?

In the past JBL was known to mate well with tube amplification. But I imagine this is going to have to be push/pull. In the past I have owned Dynaco and then Quicksilver before I went to explore the world of SET amplfiers. When I bought the 4365 I had thought they were going to be agood match with my Electraprint amplifier, but I was completely wrong on that one. What power level would I have to reach with tube amplification?

Finally in terms of solid state, the choices are huge. I know McIntosh was often a favored pairing, but I have never been a fan of the brand. I wonder about some of the solid state Conrad Johnson offerings, but I think they may be getting long in the tooth these days. I have thought about BAT. I actually have a First Watt F7 here that is my back up amp and it runs them better than a person would have imagined. The latest generation of AVM is now a hybrid, and ownership by Burmester might be a good thing, I would like to think I could get service in the US for them.

Any thoughts or experiences you want to pass along would be greatly appreciated.

neonknight

@atmasphere 

So I ordered a set of amplifiers today. Decided to give a pair of the Atmasphere Class D amplifiers a go. I heard them a year or two ago at the Pacific Audiofest. Granted it was under show conditions and with unfamiliar gear. But the potential was there. I then have followed owners experiences over time and it kept my curiosity alive. Finally I had a phone conversation with Ralph at Atmasphere and my impression is that he is a straight shooter, polite, and patient person. Not a bunch of bullshit, just no nonsense engineering based answers. So I am going to give it a go.

 

i have read all the posts here and many are intriguing. The MC2 amps piqued my interest. JBL has often been paired with commercial/professional amplifiers and it is probably an option worth exploring. I just don’t know if these amps can be found in the US market. 
 

Finally I have a First Watt F7 in my garage. In many ways it has similar voicing to the Classe. It’s a great safety net for me while I explore a few different avenues. 
 

It has been awhile since I listened to Class D amplifiers. In the past I found them too smooth and lacking in harmonic texture and expression. I am hoping Ralph’s design has overcome those limitation! 

With your JBLs, I would highly recommend a good McIntosh tube amp. They 

will complement each other like caviar goes with champagne, you will not be disappointed by the excellent sound quality you will get out of both.  

Should you want to save a few dollars and have a world class amplifier please look at Odyssey’s Kismet.

But don’t have high expectations of the website ... perfunctory at best.

 

https://odysseyaudio.com/kismet-reference-amplifiers/#

 

I have written a thread about my experience with the JBL 4367 and various amplifiers. It is titled:

"How can I establish a reference level?"

It is here on Agon in the Tech Forum.

 

They are amazing speakers!!! I am still in awe when I listen to them.

Slack-jawed awe.