Tungsol replacement tubes kit for the B52 ST60. Standard set, selected for best all-around sound upgrade. The set includes the following tubes:
5x 12AX7 / ECC83 Tungsol
1x 12AX7 / ECC83 Tungsol Balanced
1x ECC81 Tungsol
1x JJ GZ34
2x 6L6GC STR Tungsol Platinum Matched
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