New Electro-Harmonix 6CA7EH EL34 6CA7 Big Bottle Vacuum Tubes - Matched Octet

We only sell factory fresh tubes and NOT seconds as we are an authorized dealer for New Sensor (EHX) and JJ

Matched within 10% or less by Plate Current and General Mutual Transconductance. Plate Current matching is the end all be all when it comes to matching, it is by far the most important. This classic big bottle 6CA7 is a tetrode rather than a pentode like the EL34. Both tubes are interchangeable but many prefer the rich and detailed sound of a tetrode to a pentode.Electro-Harmonix is rocking the vacuum tube community with the superior quality of the "EH" series tubes. Electro-Harmonix sound effects are world renown for the soulful warmth of their analog sound and their line of "EH" premium tubes continues in this tradition of classic tone. 6CA7 Big Bottle Tetrode. Matching power tubes for equal current draw is important for maximum performance.

Testing and/or Matching

We test and/or match our tubes by Gm & Plate Current using a state of the art digital Maxi-Matcher tube tester. The Maxi-Matcher simulates a real circuit and tests tubes in real-world conditions. We also check our tubes for other issues like shorts on calibrated and vintage tube testers. We match our tubes +/- 5% with an overall tolerance of 10%.

While we do screen for noise and microphonics, even the best tube testers are quite bad at finding these faults. The only real test is with your ears. We guarantee that our tubes will be free of noise or microphonics but please be aware that there isn't a whole lot we can do to ensure your tube won't be. To combat this issue, we are quite liberal in accepting returns for these reasons.

Shipping

** INTERNATIONAL shipments typically take 3-6 weeks by our standard USPS First Class Mail but often take up to 3 months for delivery. eBay estimates are NEVER correct for International **

All orders are processed & shipped within 1 business day

Since all of our items ship for free, we cannot combine shipments and will not refund you retroactively

Domestic Orders

USPS First Class Mail: 2-7 business days, tracking

USPS Priority Mail: 1-3 Business Days, tracking

International Orders

USPS First Class Mail International: 3-6 weeks typically but up to 3 MONTHS, limited to no tracking

USPS Priority Mail International: 1-2 weeks, full tracking

Guarantee & Returns

We guarantee our tubes for 90 days upon receipt. If anything goes wrong in that time, we will replace tube once returned to us. We also pay the return shipping or will send you a prepaid shipping label so you will not be out anything. We accept returns if a tube arrives faulty or becomes faulty within the warranty period. Noise and/or microphonic issues are covered. We reserve the right to deny returns for buyer's remorse including the buyer's opinion on "tone".