12AX7 MULLARD MATCHED PAIR ECC83 VINTAGE TUBE NOS 161 B2C4 (1962) *eTracer*

$281.99 Buy It Now or Best Offer
free,30-Day Returns

Seller Store lakeland_music
(1482) 100.0%,

Location: Lakeland, Florida
Ships to: US,
Item: 226136695031

All returns accepted:ReturnsNotAccepted
Mullard:Mullard
Type:NOS Tube
12AX7:12AX7
MPN:Does Not Apply

Why Buy From Us?: Why should you purchase your tubes from Lakeland Music? We utilize a unique testing process, using a combination of vintage tube testers for shorts and gas checks, and precise modern testing equipment that is both expensive and time consuming to fully verify the meaningful electrical values of every tube we list. We also audio test every tube in one of our many amplifiers, both instrument and hi-fi, for sound quality. Our tubes may be more expensive than some big retailers, but when you work with us you know exactly what you are getting, dispelling the myth that buying tubes from eBay is a gamble, or that there is “only junk on eBay”. We’ve seen this opinion on hobbyist forums for many years, and took it to heart. We want to be the exception to this viewpoint. You are bidding on MULLARD 12AX7 \ ECC83 MATCHED PAIR VINTAGE PREAMP VACUUM TUBE (2 Tubes \ 1 Pair Included With Bid) Mullard shield logo type, 14mm plate, copper post halo getter. produced for the Rogers Radio Tube Co. Rogers was purchased in 1941 by the Phillips Electronics Corporation, who distributed Mullard in N. America. This is a fully matched pair, identical date codes and well matched test readings. Date codes are 161 B2C4, indicating production in March, 1962, at the Blackburn factory, Gt. Britain. Tubes matched and tested very well on our curve tracer, with plenty of life left. 102% \ 99.7% Mu (Voltage Gain) & 86.3% \ 88.5% Gm (Transconductance) 101% \ 102% Mu (Voltage Gain) & 87.1% \ 83.8% Gm (Transconductance) Values for plate current (mA), Rp, Gm and Mu are detailed below. Corners test simulates natural voltage spikes under real operating conditions and tracks plate current variations. Tube #1: Triode #1 – Plate Current = 0.88mA \ Rp = 73817 \ Gm = 1381 \ Mu = 102.2 \ Corners = PASS Triode #2 – Plate Current = 0.95mA \ Rp = 70387 \ Gm = 1416 \ Mu = 99.7 \ Corners = PASS Tube #2: Triode #1 – Plate Current = 0.96mA \ Rp = 72219 \ Gm = 1393 \ Mu = 100.6 \ Corners = PASS Triode #2 – Plate Current = 0.85mA \ Rp = 77972 \ Gm = 1311 \ Mu = 102.2 \ Corners = PASS Normal 0 false false false EN-US X-NONE X-NONE Gm Nominal = 1250 \ Minimum Good = 700 No Shorts or Leaks Check out our store for more great tubes and other vintage music gear. We only list the best! Note to customer: Returns: We provide a 30 day return policy for our items, as long as they are in 100% the same condition as when we listed it. Past 30 days, we cannot offer any guarantees a vintage item will continue to function. If you have a problem within 30 days, please contact us immediately so we can help you resolve it. Please keep any boxes, pins or labeling intact. If an item is returned altered, damaged, or different from how we listed it, we may charge a restocking fee depending on the condition of the returned product. Test Results: First, we test all of our tubes, in both a calibrated tube tester, and perform a live audio test in guitar, hifi and vocal amplifiers. Our testing practices are stringent, and have given us well over a decade of satisfied clients. Still we cannot guarantee exact test result numbers or data, nor can we foresee the results you will have using our parts in your equipment. Our recommendation is to contact us before purchasing so we can do our best to help you find a good match for your needs. We do not offer partial refunds or returns based on test data or test numbers. NOS Tubes: “NOS” is a search term many buyers use on eBay to search for vintage tubes. This is a widely criticized word that many electronics experts and hobbyists \ enthusiasts do not like to hear unless the item is brand new, sealed in the box. When it comes to listing as a seller, sometimes to match your product with a buyer who may be looking for your item, but doesn’t always know the proper terms to search, you must use the terminology most used by the buyer for the product they are looking for. Many tube buyers only know vintage tubes by the term “NOS” and will not type “vintage” when searching for what they are looking for. Therefore, when we list “NOS” in the title, we are only describing a vintage tube. When a tube is new in box, we will combine that with the term “NIB”, or “New In Box”. We will also list that the item is “NIB”, “NOS”, or “new in box”, when a vintage item meets a certain threshold of visual quality combined with test data for it’s age and type. This still may show signs of handling, marks, dirt, dust, rust, patina,or tarnish. This is normal for items stored for many decades in sometimes less than ideal climates. These items also have been understandably handled and changed hands many times over their life. This usually results in less than perfect cosmetic condition, but by no means indicates the item is used. Most audio experts are in 100% agreement on this. We hope this clears up the title term NOS for some buyers who have or will inquire about this. We are not trying to misrepresent our items, we are simply attempting to put our listings into the hands of those who want to see them. Performance Of Vintage Items: We cannot guarantee a vintage item will perform the same with or in your equipment as it did in ours, or that a vintage item will continue to function once it is used. We list our items honestly and accurately as possible, many times the items we are selling are 50-80 years old.

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