Audiophilepure

https://www.stereophile.com/content/audio-research-i50-integrated-amplifier

I experienced one bug with the amplifier’s control software. Occasionally, the amplifier spontaneously went into standby mode, at least as indicated by the Lexitubes’ single dots, while the tubes all remained powered up. This could be some sort of tube-protection feature except that it didn’t seem related to playback level; the average voltage the last time it happened was <3V RMS, and it never occurred during high-power measuring on the test bench. Pressing the Power button on the amplifier’s top panel, after waiting the requisite 3 minutes, always brought the I/50 back into action.

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