The fact of the matter is that TAS reviews are purely subjective by a bunch of old men who can’t hear squat just like in the other print publication that is in circulation in the US. The only objective reviews that are available are in Stereophile which used to be the exclusive domain of John Atkinson and are now supplemented with test bench reviews from Paul Miller of HiFi News that is now the British sister publication of Stereophile since they’re currently owned by the same publisher AV Tech.
As many here have pointed out the ambiguity of reviews in general the test bench reports seem to be increasingly influenced by the advertisers as the data provided from the tests is less strait forward and harder to decipher when it comes to the percentage of distortion vs output power versus vs frequency for both harmonic and intermodulation distortion. They no longer state the calculated voltage as it translates to watts for a given load and makes it difficult for a layman to determine if an amplifier is actually meeting the manufactures specification for RMS power output from 20Hz to 20Khz for their stated distortion claims. Pretty shady, especially when it comes to tube amplification where output power is always stated by the manufactures at 1Khz only and significantly overstates power output capability. The actual clean power envelope for any tube amp is merely a fraction of this figure RMS from 20Hz - 20Khz.

