Tungsol replacement tubes kit for the Rivera Chubster 40 and R30. Special selection set: uses KT77 tubes for enhanced clarity and warm smoothness. Hand selected high gain tubes set. The set includes the following tubes:
4x 12AX7 / ECC83 Tungsol
1x 12AX7 / ECC83 Tungsol Balanced
2x Gold Lion KT77 Platinum Matched
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