michaelwjones Posted October 23, 2021 Share Posted October 23, 2021 Branded “Acoustic Research” with early 1990s date codes. AT1000 tested with results attached to boxes. While I never installed the tubes, I cannot vouch for what AR’s supplier did. However, I’ve never had problems with other tubes from that source. $100 for all plus shipping to you. Please email any questions. Thanks. Mike Quote Link to comment Share on other sites More sharing options...
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