No problem, it is my native language. Too bad there was no link to the original test (in Swedish).Sure, here is the link to LTS that performs such tests.
Hope you understand SwedishLjudtekniska Sällskapet
Ljudtekniska Sällskapet är en oberoende förening som verkar för högsta möjliga kvalitet såväl i fråga om hifi-anläggningar som musikproduktioner av alla slag...www.lts.a.se
Where do I even start with that test? It wasn't a double blind test, just single, but with everybody allowed to discuss the differences before submitting their opinion, and with an extended sighted listening and discussion too.It was 14b sst model, not 4b.
Found a link in English:
That thread also contained the observation from the Swedish tests:Here is an interesting post from ASR member Blumlein 88 who found Spectral amp transparent while other amps not:
Limitations of blind testing procedures
Do you think there is something that can't be electrically measured that distinguishes one amp from another? Its more the definitive interpretation of the data, where comprehensive test data is actually available, and its relation to sound. This is not relevant and continuing down that line...audiosciencereview.com
"So my stance is that there certainly exists sonic differences between power amps that drive a reasonably difficult speaker load that is clearly detectable in DBTs, but in reality, they are so small that I do not concider them an issue because there are other issues that impact sonic performance orders of magnitues more."
Anyway, A few non-scientific "tests" won't really determine anything this way other. What we need is proper studies, with peer review, verification and replication.