NO LONGER A STOCKED ITEM
Sovtek 12AX7-LPS: A long plate version of 12AX7/ECC83 that appears to be a copy of the old German Siemens E83CC. This item works on both AC & DC heaters, the only difference (according to the official Sovtek dealer flyer) between the 12AX7LP and 12AX7LPS is that the LPS works on both AC and DC heaters, whereas the LP only works properly on DC. There is no physical or electrical difference otherwise. Price is for a matched pair.
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