Audio Science Review = Rebuttal and Further Thoughts

Sorry @prof , have not been following this ASR thread(s) closely. Any thread Cin Dyment aka @crymeanaudioriver this time around is pointless. It’s a “drama” I have seen dozens of time before.I just see you arguing a lot the party line position of ASR. So I was just wondering. I do remember you praising Devore speakers who measure like crap according to the party line of ASR, so I know you do listen to determine your preferences in this hobby. It’s fine, it’s just a hobby. Not a life or death situation 

No problem thyname.

It’s pretty ironic because nobody here has voiced more criticism - or written more pushback - of some aspects of ASR than I have - on the ASR forum!

I’m continually pushing back against the idea that purely subjective impressions and writing are worthless. I'm also the guy there often defending the worth of vinyl and tube amps.

And as I say, I am interested in a much wider view of high end audio products than you tend to get at ASR. I don’t necessarily criticize the fact that ASR tends to converge on some narrowly defined ’X makes for a good product’ trends. That’s perfectly fine so far as it fits the remit of a forum like that. It’s just that my own interests aren’t focused in precisely that same direction.

Well, there are thousands of ways to “skin a cat”. To me, there is no point of pushing one’s method of evaluating audio down the throats of others. We are all adults, and can figure stuff for ourselves. This whole thing is starting to become like a missionary work from the 1400s. Again, just a hobby, not a life of death situation 

@prof Unless you have viewed the parts and design of both the Benchmark and Emotiva YOU have no basis to doubt me. Not only that, I think that the Benchmark DAC I use has superior engineering, possibly due to their particular asynchronous oversampling. I never said that Benchmark makes a bad product-they make good products that could be elevated to high end quality. And the Emotiva is a true bargain to upgrade.

Junk parts-for high end audio, it’s using 50¢ regulators used in ordinary industrial use such as in computers rather than $30-$50 audio quality regulators. Maybe you think capacitors are all the same and sound the same if they measure the same. They don’t. Sometimes less expensive audio quality caps sound better than expensive caps in audio equipment but using industrial use caps in high end audio is a joke which the internet is replete with information on which cap sounds different from one another. They don’t use industrial caps in high end audio equipment for a very good reason-they don’t sound good.

The reason better and typically more expensive parts are NOT used is for economic reasons-the price the product increases, sometimes exponentially.  Benchmark and Emotiva provide reliable audio equipment at a price point.  

fleschler

You’d written about the Benchmark LA4 preamp:

"There is a cure for the Benchmark. Replace the computer quality, cheap-ass regulators, power and filter caps, maybe parts of the audio board, the Op-amp, etc. with audio (much more costly) parts. Benchmark products are only okay stock but can be great when modified. "

A ’cure?’

The Benchmark LA4 is among the most transparent, lowest distortion consumer audio products you can buy! They set out for "benchmark" transparency and accuracy and achieved it. They would have used whatever components necessary, but they knew what type of components would make a difference and which wouldn’t. That’s because they are actual highly qualified engineers, not merely audiophiles claiming Golden Ears.

Amir measured the LA4 and it’s low distortion was off-the-charts:

John Atkinson measured the LA4 and was similarly blown away:

Some distortion products measured "close to the residual level of these harmonics in my Audio Precision SYS2722’s signal generator."  (The Audio Precision is far more sensitive than our ears - that's the point of such an instrument in the first place!)

JA stated at the end:

"Benchmark's LA4 is the widest-bandwidth, widest-dynamic-range, lowest-noise, lowest-distortion preamplifier I have encountered."

And yet you are telling me it could be better with some other parts. Show me any pre-amp that measures better, using whatever parts you claim will work better. It must be well hidden because JA, who probably measures more preamps/amps than anyone else, hasn’t seen it!

You see, there are people who actually produce objective evidence for a product, then people who make claims, mostly based on their belief in their Golden Ears, but without any objective evidence to back it up. I’m much more persuaded by evidence, than mere claims.