Unfortunately magazines require money to operate and a audio mag will require audio manufacturers and audio show promoters to pay for advertising to support printing/online management. I just don't see that happening unless the mag is self supporting financially. If a mag is self supporting then the truth would be available regarding product performance and measurements of course that would depend on the credibility of the reviewer and the accuracy and knowledge base of the person doing the measurements. It would be nice.
But what chaps me, is the current advertising vs actual written audio related text. Lets take this months Stereophile. Around a 163 pages total. On a quick run through, there are 105 full page adds, 14 1/2 page adds and 6 1/4 page adds vs 58 pages of written text and not all of those 58 pages are audio equipment review related. You have the tables of contents, legal stuff, reader comments, music reviews, but it seems each month the audio reviews give up space for paid color advertisements, sure that's income for the magazine, it cost to print but come on. From what I see, be it car mags, boating mags etc.. its that way in almost ever mag you pick up, marketing driven advertisements, lots of them and they keep growing as the main purpose of the mag dwindles. .