As opposed to those who pretend the prefer 120 db sinad to 90 db sinad, yet never put their ears to the test?
I have a Heresy and a 25-year old headphone tube amp (60dB SINAD). Most of the time I can’t tell the difference between them. There are a few tracks of classical music where I think the increased distortion might be marginally audible, though I couldn’t swear to that. Certainly any attempt to describe one as ‘more musical’ than the other would be pure fantasy. But I know
the Heresy is the better product.
Like many of those posting here on ASR, I’ve spent years going down the subjectivist rabbit hole. The difference is, we’ve come out the other end and realised it’s time to stop fooling ourselves.
An amp with 120dB SINAD is objectively better than one with 90dB, but it’s unlikely you’d hear a difference between them. It’s simple common sense to prefer the better-engineered product, especially since, in most cases, it will be cheaper than a boutique item relying on magical properties.