If we just listen, redesign, then repeat, we may arrive at a solution that just masks the artifact with another less-objectionable artifact. When we hear something we cannot measure, we are not doing the right measurements.
#Benchmark ahb2 smps power supply how to
We have to tell it exactly what to measure and how to measure it. An APx555 test set has far more resolution than human hearing, but it has no intelligence. But since listening tests are never perfect, it’s essential we develop measurements for each artifact we identify in a listening test. "At Benchmark, listening is the final exam that determines if a design passes from engineering to production. The interview accompanies Paul's review of the LA4 in the December, 2020 issue of TAS. Paul Seydor of The Absolute Sound interviews John Siau, VP and chief designer at Benchmark Media Systems. Q: "Linear power supplies have been and remain quite popular in high-end devices. When and how did the partnership with THX come about?" Q: "The AHB2 amplifier incorporates THX Audio Achromatic Amplifier technology. What test material did you use for this, and what did you find?" Q: "You conducted some listening tests to determine whether distortion in the “First Watt” was audible. Q: "Was there ever a time where you learned something from a subjective test that was not captured by measurements?" Can you talk about the equipment, the listening room, and the process for subjective testing?"
Q: "Benchmark is one of the few companies that publishes an extensive set of measurements, but you also balance that with subjective testing. Secrets contributor Sumit Chawla recently caught up with Benchmark’s VP and Chief Designer, John Siau to get a little more in-depth on several subjects.
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