I have already answered you before about my experiences and my current setup (why do you keep asking). And no I do not claim all guitars sound the same. Amplifiers are not musical instruments, and they should not be. And indeed, I do not rate many tube amplifiers very highly - they may sound euphonic but that is not the same as accurate.
I do not doubt that you have heard differences, by the way. Apart from possible differences because you may have compared inaccurate tube amplifiers, the most common cause of perceived sonic differences is differences in loudness level. If that occurs, you do indeed hear a difference in ’sound quality’ - that is how the human brain interprets these level differences. Remove those loudness differences, and the sound quality differences disappear as well. But mind you, the remaining differences have to be very small - below about 0.2 dB, and you can only achieve that by using a good Volt meter on the speaker outputs. Just try and you will be amazed.
I do not doubt that you have heard differences, by the way. Apart from possible differences because you may have compared inaccurate tube amplifiers, the most common cause of perceived sonic differences is differences in loudness level. If that occurs, you do indeed hear a difference in ’sound quality’ - that is how the human brain interprets these level differences. Remove those loudness differences, and the sound quality differences disappear as well. But mind you, the remaining differences have to be very small - below about 0.2 dB, and you can only achieve that by using a good Volt meter on the speaker outputs. Just try and you will be amazed.
