JJ Electronic replacement tubes kit for the Mesa Mark 4. Mixed set: Punch and full sound from the pair of 6L6 and a distinct clarity and smooth clean tone from the KT77. The set includes the following tubes:
4x JJ ECC83S
1x JJ ECC83S Balanced
2x JJ 6L6GC Platinum Matched
2x JJ KT77 Platinum Matched
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