Jeff Rowland Model 1

Kudos bigkidz, my experience also, you need dynamics for reality, you need frequency extension for the full picture, this is where BJT’s shine.
This is not just me, but there are many quotes on line from lecturers on the subject. here is just one

" BJTs tend to have better, more linear gain characteristics…and can give you a lot higher voltage gain than MOSFETs.…They’re also able to handle higher output currents…and have a lower output impedance.…That gives BJTs a huge advantage over MOSFETs…for building amplifier circuits…that need to provide a significant amount of output power…and or drive loads that have low input impedance.…MOSFETs are going to have a harder time…driving a low impedance load…because they have a higher output impedance.…"

Yes and before anyone says it, you can make Mosfets lower in output impedance, just put a **** load of feedback around them and they’ll equal a BJT then, but we all know too much feedback sounds like c**p.

Cheers George

Really ? Mosfet mist ? Weak in the bass department ?

Don;’t know about the "mist" remark Mr D.

But yes for the same given complimentary pairs of Mosfets v (BJT) Bi-Polar,(both with great power supplies) the BJT output stage amp will deliver much more current (doubling down to 2ohms) into low impedance’s than Mosfets can hope to.
This is why you’ll see the reputation for best amps in the world that can drive evil loads that many of the great speakers have, are BJT amps.

Cheers George

My belief, is amplifiers should be purchased to match the speakers it will be driving, and I am into " easily driven " speakers, not needing an amplifier to " double down " as georgie states.

Like I said Great amp, and my reason for saying it also, is that the OP hasn’t stated which speaker yet. He’s listen to ML esl’s which are a min 1ohm, this amp will handle it.
And this amp is that can drive anything he decides to get, now or in the future,
The OP can get any speaker with it and it will be happy diving them because of these figures. Tested at
84W into 8 ohms
140W into 4 ohms
220W into 2 ohms.

Cheers George

jeffvegas

Good little amp get it, what Rowland was good at "linear amps", can "almost" do the wattage doubling act into each halving of impedance loading (below), would have to be BJT (bi-polar) output stage as complimentary Mosfets couldn’t do these figures.

Should be able to drive "hard to drive speakers" that aren’t too inefficient, like many of the mid/large sized Wilson or Martin Logans with their 1ohm loading or Maggies I noticed you talking about in other threads

Tested at
84W into 8 ohms
140W into 4 ohms
220W into 2 ohms.

Cheers George