Nearly all manufacturers do not advertise/exhibit their product measurements? Why?

@carlsbad Apparently you haven’t read the Audio Science Review forum with over 1000 posts to date. Amir threw me off after the first two hours with maybe 50 to 100 ASR member comments, taking neutral statements out of context, perverting my comments and defaming me.

@kota1 Unfortunately, upselling is common. Like Mark Shifter who had me purchase the Dynavector XX1 after owning the 20X, Ruby and D2. It was a poor tracker, I couldn’t see the stylus easily and something else I didn’t like (a long time ago). Or selling me Audionic M33? speakers with an 81db efficiency low impedance being driven with Dynaco Mark3 monoblocks-big mistake (hey I was 25, I relied on the store owner and didn’t know the measurements-would have made my decision not to purchase them). Some sellers just didn’t know any better selling me expensive Magnan IC cables, OCOS (did work here) with Martin Logan Monolith IIIs when he was using high powered Audio Research amps and top of the line front end/pre-amp which he knew I didn’t have (I had a Classic 60 amp and SP14 pre-amp).

I think there's several reasons for audiophile manufactures not providing measurements for their equipment.

It's clear that audiophiles don't trust measurements to be representative of the resulting sound quality and even fewer would know enough about the measurements to understand the limitations of the information.

I don't think there's any industry standards for audiophile components, so without an expectation for universal measurements it really wouldn't be possible to make any comparisons anyways.  The last thing any audiophile wants is a designer chasing a specification.

I think there are some specifications that could provide some insights for listeners if they were available.  There has to be some correlation between some measurements and user preferences, but without the measurements it's impossible to know. 

@lalitk Well, cartridge manufacturers generally do provide higher end cartridges (above $1000) with frequency response curves.  I remember even Grado's cheap cartridges did.   I use those measurements as I don't like rising high end cartridges (Lyra for example) and prefer flat responses (Dynavector for example).  Cartridge manufacturers maybe the best at providing test measurements and specs that will determine how well the product/cartridge mates with the tonearm and pre-amp.

@kota1 Yes, Audio Measurement Review where dealers can post their test measurements.  It's a start.

@fleschler I don't often read the ASR trash. But other people quote it.  I heard ASR panned the EtherRegen switch and that put me over the top in my decision to buy it.  Great switch.  

They haven't banned you yet?

@fleschler ​​​​​​,

Manufacturers can provide anything upon request to reviewers, that is normal for all industries, then reviewers can verify the supplied measurement, if having the same measurement tooling, and transfer findings regarding production consistency. For the public i am not sure that could be possible (you could always ask of course) and if so, would you be sure that said measurements correspond to the specific model you purchased or to the general one?