Kind of a harsh intro to ASR…Welcome to the forum.
Where are your measurements of your extraordinary results?
No measurements? It didn't happen.
Except for the spelling of peace I couldn't agree more.Someone spends dyzzing money for cables and other hifi voodoo, however I am into tube rolling. It is like fine tuning of "musical tool" and my subjective result is immediately audible. Piece in music!
I believe your ears exist, too. As for your experience, it's called psychoacoustics.Thank you. I believe in my ears. Why some amplifiers sound differently when their frequency measure is very or even the same?
Best to just rip the bandaid off. I also welcomed them. Also Amir's measurements in the article clearly put the nails in this savior.Kind of a harsh intro to ASR…
My take would be that without measurements, no one can be sure that what you heard was repeatable or objective. More words, but a bit less edgy.
Is it audible? Not likely unless you swap broken tubes for working tubes. As Amir describes, you get the "rolling placebo" effect. Yes, swapping cables and other such are hifi voodoo, but so is rolling rubes. Er, I mean rolling tubes.Someone spends dyzzing money for cables and other hifi voodoo, however I am into tube rolling. It is like fine tuning of "musical tool" and my subjective result is immediately audible. Piece in music!
it's the Audio Fantasy Revue.Except for the spelling of peace I couldn't agree more.
I brought up this distinction between guitar amps, where tubes are being driven way out of their rated operating ranges, vs Hi-Fi applications when they are not. There was some lively debate, mostly arguing against my hypothesis that any differences would be logically expected, from members here for whom I have great respect and who are far more experienced in valve science than I.I realized I missed this bit - my understanding comes from guitar amps, where the 12AX7 is used pretty much ubiquitously. There are probably two dozen different physical designs of 12AX7, and they all sound a little different when driven into clipping. Again - not major, like... at all (very difficult to pick out, even sighted, it's not "night and day" nonsense at all), but definitely there.
The biggest differences though are between tubes that meet spec and those that don't. "This tube sounds anemic!" = something in the construction of that particular tube is off so it doesn't meet spec. Within reasonable (20%) tolerances, even the most golden ear type would be hard pressed to hear a difference.
When they're run in their linear region, they're all exactly the damn same.
Can you give an example with actual evidence behind it?Thank you. I believe in my ears. Why some amplifiers sound differently when their frequency measure is very or even the same?
LOL!Can you give an example with actual evidence behind it?
Thank you. I believe in my ears. Why some amplifiers sound differently when their frequency measure is very or even the same?
Ok, everyone is warmly welcomed at my home with respective measurements .Hi, yeah I am OK with your fun of tube rolling and hearing different things, which is not really a remarkable thing that you can hear changes in your gear.
However, you DO realize that there are a whole lot more measurements needed for comparison purposes, not just FR being the same, I hope! If you do not then perhaps you should study more information all over the internet about measurements of audio gear. Take a look at Stereophile or other magazines that have measurements, they are not exhaustive, but very revealing. Stereo is a system, the electronics, the transducers, the room, your ears and brain. It is complex.
Ok, everyone is warmly welcomed at my home with respective measurements .
I brought up this distinction between guitar amps, where tubes are being driven way out of their rated operating ranges, vs Hi-Fi applications when they are not. There was some lively debate, mostly arguing against my hypothesis that any differences would be logically expected, from members here for whom I have great respect and who are far more experienced in valve science than I.
Then I went on a search and destroy mission looking for any robust data on this lore, as I too have a large collection of NOS tubes that I’ve employed in the Fender Tweed replicas I occasionally build as a hobby—chosen based on decades of praise from eminent artists, producers, manufactures and audio engineers. And what I found in my literature review is that no one appears to have put this question to any serious, objective analysis (shockingly). It made me question whether this gargantuan tube industry amongst guitar enthusiasts may be entirely based on mythological antidotes.
But for the sake of my own enjoyment mucking around with different tubes, and for whatever benefits I either legitimately or phantasmagorically hear, I’ve chosen to keep the hypothesis alive until someone can devise a methodology to legitimately measure the sonic nuances in tone, compression and response between a new Electro Harmonix cheapie and a high dollar NOS Telefunken or Mullard when they’re overdriven to the stratosphere. Otherwise, I’m a firm believer in cognitive bias and evidence based measurements for all audiophile components. That’s just me…
There are lots of tube amps which are not "audibly distorted." As @levimax (for example) found when he did blinded comparisons with a Stereo 70.I suppose there could be some super clean measuring tub amp out there where more measurements could be done, but even the cleanest tube amps aren't clean. They're just different grades of audibly distorted.
Damn Jim, just cut that with a scythe.Sure tube rolling makes a difference. It's like changing the justices on the US Supreme Court; it would make a difference. Or changing ingredients in a complex recipe: it can make a difference.
I am more likely to use a plush-handled axe.Damn Jim, just cut that with a scythe.
Thanks boss! Remnants of my useless English major degree.It is called an FFT, Amir does them all the time. This will show up a lot of what the differences are, not all but most all. I love that word phantasmagorically, dude!