Lumin U1 Mini & SBooster

[mélaudiophile]

(06-08-2020, 05:15 PM)bbill a écrit :

(06-08-2020, 05:07 PM)mélaudiophile a écrit : Certains leaders d'opinion qui postent beaucoup, comme ici d'ailleurs, imposent leur vision, mais pas l'ensemble des adhérents je crois.

non, non, pas l'ensemble, il y a juste un petit groupe "qui sait tout", ils sont connus des responsables locaux qui donnent parfois la réplique quand ils répètent sans arrêt que tous les dac/ampli/alim/xyz.. bien conçus sonnent de façon identiques et qu'il ne faut pas acheter de THG

Le problème c'est qu'il y a du vrai et du faux dans cette affirmation, il y a des produits hdg qui sont des arnaques, (il avait été révélé que Rose Audio, je crois, vendait très cher des amplis chinois rebadgés valant bien moins), et des produits hdg qui sont super...
Croire tout l'un ou tout l'autre est néfaste à mon avis, c'est d'ailleurs pour cela que l'on parcourt les forums pour avoir des opinions d'écoute dénuées de but commercial, mais parfois aussi les personnes qui jugent ont des préjugés ou un matos insuffisant (par ex juger les graves quand on a de petites biblios).

J'ai entendu des différences entre certains amplis bien sûr, mais pas toujours.

Par curiosité il faut regarder les "sunshine trials", c'est amusant, j'avais appris cela quand je fréquentais le forum rec.audio.high.end
voici le résumé:


 there was a gentleman named Steve Zipster who ran a high-end emporium in Miami called Sunshine Stereo. Steve picked up the Pass line of electronics and was "blown away" (his words) by how good he thought they sounded.

At this time, over in the rec.audio.high-end UseNet group, a very intense debate was raging between the objectivists (who claim if an amp is properly designed, they all sound the same) and the subjectivists who believe differently.

Mr. Zipster (and his wife, Gigi) issued a challenge in this UseNet group and invited a fairly large group of "Golden Ears" to visit his shop for an evening of listening, and several of Pass' top amps were going to be compared to a lowly $500 Yamaha integrated amp driving the same speakers. A speaker comparator was agreed upon by all the participants and everyone agreed, upfront, this comparator would have no effect upon the amp/speaker interface.

This event was widely publicized in the rec.audio.high-end newsgroup by Mr. Zipster and he even offered a prize of $10,000 if people didn't agree that the most expensive Pass amp would win this shootout. And anyone who wanted to attend and participate was invited. Mr. Zipster did this in an effort to bring the perpetual argument between the subjectivists and the objectivists to an end. He was firmly in the subjectivist camp and he was convinced he was correct in his beliefs.

An expensive B&K SPL meter was used to set the levels for each amp so everything would be the same volume when the amp was switched.

Several of Nelson Pass' most expensive amps were tested with the cheap Yammy.

The testing went for several hours. Both pristine vinyl and well-recorded CD's were the source material. And everyone was convinced they heard differences and all were certain they had accurately rank-ordered the amps from the most expensive Pass as the "best" to the cheap Yammy as the "worst" sounding.

The results were tallied.

Drum Roll . . . . . . . .

There was virtually no statistically significant difference between the rankings by any of the listeners between the two uber-expensive Pass amps and the $500 Yamaha integrated amp. And these were rankings by so-called "Golden Ears," not some buffoons pulled in from the street.

And, as you might imagine, when subjectivists run a valid test and do not get the results they expect, they all began attacking the testing methodology, claims were made about "defective" equipment and there was a long laundry list developed by the subjectivists why the Pass amps did not cream the Yammy.

I always thought it was interesting that before the test began, everyone agreed all the equipment was performing well, the speaker selector switch was acceptable to everyone, etc.

And remember, this test was set up and run by subjectivists, not the objectivists who never believe any of the subjectivist claims.