I am genuinely interested
I understand that you think I'm manifesting the "ASR way", but that isn't the case. For me this isn't a matter of dogma, it's about a rationally constructed method of truth-testing. If you can hear the difference between 2 amplifiers, then that's great. That is true. That is your experience. For it to be objectively true then this truth needs to exists outside of your subjective experience. Double blind testing isn't blind dogma, it's a tried and tested scientific method used to uncover to location of the difference that a person might experience. If you experience subjective differentiation and then can replicate this under blind conditions then there may be an objective verifiable reason as to why this occurs.
Now, if said double blind testing is undertaken, for it to have the type of validity that I mention above, one's methodology needs to be scrutinised. What equipment was used? Did you volume match? What equipment did you use to volume match? Again, this is not blind dogma, but tried and tested scientific methodology involving experiment control.
Unfortunately recording your set up and posting it for a poll wouldn't meet this methodology. I can't help but think that you already know that and are perhaps being deliberately provocative. But, of course, I might be wrong.
Dogma is not being able to consider rational alternatives. Rationally if only a few people can hear a difference no big deal, carry on.
However, if a large portion of listeners hear the same difference then we can start the science.....blind tests etc......because there may be some basis to the hypothesis. Rare that it is ever done the other way around in the real world.....apart from on ASR in the endless discussions of what is audible etc etc etc etc.....
My hypothesis: the real world addition of Revel F208 speakers to my system (see signature) produces audible differences in sound reproduction between the mono and stereo settings when using the AHB2 amplifier.
My simple experiment:
- same source content (Stevie Ray Vaughan live in Montreux - Texas Flood https://tidal.com/browse/track/1217)
- playback via Tidal into PC into DAC 2 then AHB2's into Revel F208's
- levels matched using random pink noise - full range (delta wave does show a
smalldifference in level - oops just adjust in playbacksee edit below)
- [edit: the levels are off apologies, adjust File 1 =+0.67dB / File 2 = +4.00dB]
- REW version 5.20
- MiniDSP Umik-2 with 90 deg calibration file - positioned at 1050mm high, on the centre LP
- speaker CRS 2100mm
- same AHB2 amplifiers (switched between mono and stereo, and channel 2 interconnect and speaker cable connected to stereo position)
- same length speaker cable (damping factor not affected, cable capacitance and resistance unchanged)
- room effects removed by listening outdoors in free field conditions - see measurements below
The test - what is audible?
- file #1 was recorded with amplifiers set to mono or stereo
- file #2 was recorded with amplifiers set to mono or stereo
- files are identical and this was a bias test not a listening test (ie. I tell you they are different but you believe / hear they are not)
File 1 = https://drive.google.com/file/d/1Xyn_yQ2LbrVZE4KAmUiLrvBBsVxKDj2f/view?usp=sharing
File 2 = https://drive.google.com/file/d/17GHit4JTZbAzXAb4QNxEj8zkAqkh1XWB/view?usp=sharing
Record your results here = https://docs.google.com/spreadsheets/d/1TBzr7uOlnReLAC-NVYUcfFqvnZUQ5Hy_Dz1QSPPzpIw/edit?usp=sharing
Measurements below taken from the LP (recording point), with everything setup as recorded;
This is an imperfect, and overly simplified test = yes! But not everything of import needs to be the subject of extensive blind testing or published scientific peer reviewed papers. Some things are so blatantly obvious that they require no such benchmark - for example speakers with correct phase versus out of phase incorrect wiring........
This is a bit of fun to see what can be heard. Don't cheat yourself, listen and vote.