Originally Posted by ufokillerz
Originally Posted by Archaea
No all amps ended up sounding the same on the noesis 212ht and even on the klipsch rf63 in full range.
Not sure how 1 GTG can say that all amps will sound the same.
if a switching device was used, it could have changed the sound enough that everything sounded the same.
i have a ati 3006, sherbourn pa7-350, ep4000, face audio 1200ts, lab 14k clone, abletec 1000w amps, onkyo 3007 receiver, ncore400 amps, ncore1200 amps
there is a difference to me and some of my buddies that were over. nothing conclusive, but everyone would prefer the sound of something over something else, they all had different opinions as well.
We certaintly can't say all amps sound the same, but everyone there regardless of their incoming position left with the sentiment those amps we auditioned all sounded somewhere between exactly identical, and too close to reliably tell. I was unsure of my thoughts before we started, but ended our little experiment with a pretty clear personal stance on the matter.
We used super simple switching device made of eight single throw double pole electrical switches. The resistances were all verified identical with a multimeter. Each run of speaker wire was identical length. All amps were level matched two ways, with an SPL meter and a several hundred dollar fluke multimeter, from the resident engineer in our group, MrSmithers.
With that device we could switch between four amps in fractions of seconds. This is absolutely key to ferreting out the difference with no placebo.
No, I can't tell you all amps sound the same, and as countrywv said, if the amp deliberately adds its own "signature" eq, or tube warmth, or something similar they won't sound the same - as we noticed with the onkyo home theater in box. However, what we did determine was between multiple amps and receivers - from something as an inexpensive as a $20 lepai t-amp to an $800 emotiva XPA-2, it was pretty much impossible to tell the difference at normal listening volumes to even a bit louder than normal listening volumes. We repeated the test with Klipsch RF-63 playing full range and had the same results. If someone would have told me a t-amp sounded the same as the other amps, I would not have believed it. But not much you can say when they are actively switching back and forth and you can't at all tell which is which.
UFOkillerz, I will ship you my switching mechanism on my dime if you want to try a little experimentation on your own, but I'd like it back when you are through.