Mullard/RTC 5654/6AK5W black round hole plates

Mullard-RTC 6AK5 Hole Plate

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1 thought on “Mullard/RTC 5654/6AK5W black round hole plates

  1. Finally I was able to find a tube that I was hunting down for a long time. This tube is known as CV850 and M8100. The tube has easily identifiable plate structure with Black plate and a HUGE hole in the plate.

    Sound wise, this tube is the best example of how 6ak5 should sound – rich tone, very powerful bass and beautiful midrange with an added bonus of a great transparency. HIGHLY RECOMMENDED.

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