Do you measure your amplifiers etc.?

Just because we design and manufacture tube amplifiers, which historically have not measured well, this doesn't mean we don't care about their technical performance. We trust our ears implicitly as there is no test equipment in existence today that can measure what we can hear. A distortion analyzer or Audio Precision piece of test equipment is a very useful engineering tool which we still use, but it usually confirms what we can hear. Our equipment typically measures very well, with most of our amplifiers still offering very competent 0.1% THD which is why they sound very clean and engaging.