Solid State Power Amp Reviews

"I didn't examine the clipping power into 2 ohms, as Jim Austin hadn't finished his auditioning and this sample had to be returned to him. (Amplifiers sometimes break when driving their maximum power into 2 ohms, which is why I usually leave this test to last.)"

I love class-A/B reviews because they are representative of what's coming out of the speaker terminal to go to the speakers, there's no concealment of some of the measurements/tests in them, but looking at those figures and graphs JA, I doubt very much the 2ohm test if you did do them, they wouldn't have been something to write home about for those kind of big $'s.

As far as doing any good (like other similar price amps can) into very low impedances say like the Wilson Alexia's .9ohm EPDR bass loading, I'd say most probably nah, there's far better for that spec and cheaper! Unless!!! those specs you measured were in bridged mode?, then those figures are to be expected.

Cheers George

This unfortunately is the problem with this industry:-

‘Getting noticed by a critic for a well-known hi-fi magazine is, as we all know, the key to success in this industry.’

what products are being criminally overlooked by "well known hi-fi magazines? Please elaborate instead of making cynical vague comments.

"Getting noticed by a critic for a well-known hi-fi magazine is, as we all know, the key to success in this industry."

Yes it comes 2 ways, and comes on it's own merits/reputation by word of mouth also.

My "Lightspeed Attenuator" passive pre (now sold off) no one knew about outside Australia. It was noticed back in 2009 by Sam Tellig, so I sent him one for evaluation, he loved it so much he bought it, (trade price naturally) and one for his son. It made it into 2010 April issue "Stereophile's Recommended Components"

Cheers George

apologies..

“I didn't examine the clipping power into 2 ohms, as Jim Austin hadn't finished his auditioning and this sample had to be returned to him. (Amplifiers sometimes break when driving their maximum power into 2 ohms, which is why I usually leave this test to last.)“

Seems you did it, kind of, and the 216 didn‘t break:

500 W mono into 4 Ohm for the amp is the same stress as 2x250 W stereo into 2 Ohm.

The only difference, the power supply rails are loaded more evenly in mono, as each amp takes from the opposite rail at each given moment.

Tested 165Wpc into 4 ohms, the "2ohm scenario of 2 x 250W stereo" into 2 ohm", is a far cry from (good current ability stereo amp) being able to almost doubling the 4ohm figure of 165w to 330w for 2ohm loading.
Still says it's not the best stereo amp (especially in bridged mono mode) for speakers like the Alexia which have an EPDR of .9ohm in the bass.
Means to me, it's current ability is limited into speakers with low impedance bass, compared to other amps in the $35k price bracket.

Cheers George

..."that which is asserted without evidence can be dismissed without evidence" - Christopher Hitchens.

... what is the length of the shortest peak level that it can hold and display?

Also. what is the maximum dynamic range of the music JA2 listens to?

In the following video, Harbeth Monitor 40.1 speakers are driven by CH Precision amplifiers. The test music used is Laptev Sea by Pan Sonic.
Note that the peak reading on the power meter often exceeds 500W and occasionally over 700W.
The 40.1 is less efficient than JA2's Wilson speakers.

https://www.youtube.com/watch?v=Y3WpRY-EtX8

https://www.youtube.com/watch?v=XhuJxdaU87I

That's just a bit more wattage that's needed with those, and they are miles more easier to drive than the Alexia's, the impedance barley dips below 6ohms compared to the Alexia .9ohms!!!! and that's where you need big current, and not so much wattage.
https://tinyurl.com/yu696j3o

Cheers George