Campbell Peters Posted March 7, 2021 Share Posted March 7, 2021 I recently purchased an AMC US24192i DAC/Pre-Amp with valves. The valves do not light up, although the DAC works fine. A request to the supplier regarding the valve operation remains unanswered. I was wondering has anyone encountered this "problem" with this DAC. I am not tech savvy. Any advice would be appreciated. Link to comment Share on other sites More sharing options...
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