If the history I've read is correct, the big magazines refused blind testing after one of them tried it on a range of amps and found that they couldn't reliably tell the expensive ones from the cheap ones.
That's not the same thing as saying they sounded the same, but it might hold true today that your ears alone won't drive you to prefer a costlier amp or a new amp over a vintage amp.
That's not the same thing as saying they sounded the same, but it might hold true today that your ears alone won't drive you to prefer a costlier amp or a new amp over a vintage amp.