Electro-Harmonix tubes are all new designs and are of excellent quality. If you want great sounding tubes at a very reasonable price, then Electro-Harmonix tubes should be on your list.
Tested and/or matched at full operating voltage on a Maxi-Matcher Preamp tube tester for both Gain and General Mutual Transconductance (Gm). We always TRY to match by 5% when we can (90% of them time) but our cut-off matching parameter is +/- 15%.
Typically 3-6 weeks but up to. 6-14 Days - Includes Tracking. The item "Gain Matched Quad 4(pcs) Electro-Harmonix 12DW7 ECC832 Vacuum Tubes" is in sale since Thursday, April 1, 2021. This item is in the category "Musical Instruments & Gear\Guitars & Basses\Parts & Accessories\Amplifier Parts". The seller is "onlyglass" and is located in Easthampton, Massachusetts.This item can be shipped worldwide.