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AHB2 - Lab Report - Oh Hyeonil - Studio51, Sinlyul Lee Ph.D. - Sonicast

by Benchmark Media Systems September 01, 2018 8 min read

Audio Precision APx555 with an AudioGraph Active LoadBox

The Benchmark Media AHB2 showed the highest level of audio performance in all metrics. Despite being a half-rack-sized compact product, it provided a constant voltage across a wide range of loads. In stereo mode, it performed well into a 1Ω impedance load at phase angles of 0, ± 30, and even ± 60 degrees which is a very harsh operating environment. The amplifier is ideally suited low-impedance and phase-shifted loudspeakers, which are commonly referred to as "hard-to-drive speakers."

In SNR and THD measurements are very impressive, exceeding some of the measurement limits of the best measurement equipment available. The stereo-mode output of 100 W into 8Ω and 400 W into 2Ω is more than sufficient output under most conditions. If you need more power, you can use the bridged-mono mode.

- Oh Hyeonil, Studio51

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