Electro Harmonix replacement tubes kit for the Blackstar Artisan 15. Standard set, selected for best all-around sound upgrade. The set includes the following tubes:
1x 12AX7 EH
1x 12AX7 EH Balanced
1x EF86 / 6267 EH
1x 6CA4 EH
2x EL84 EH Platinum Matched
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