All tubes come with a full 30 day, unconditional, no questions asked, money back satisfaction guarantee!Test scores will average between 85% and 95% of NOS values.Individual test scores will be written on the new boxes that you receive with your tubes. You are purchasing a “Platinum Plus Grade” matched pair of tubes. This means that the plate matching is virtually perfect on a calibrated Hickok TV-7 or 799 within 1%.These tubes were carefully screened by the manufacturers (Baldwin,Conn,Wurlitzer, Lowery etc.) and specially selected for their low noise and microphonic characteristics. This makes them ideal for your preamplifier and phono stage applications.Please see our other listings for “Silver, Gold and Platinum” tubes. Silver Grade tubes are matched within 15%, Gold Grade within 10% and Platinum 5%.The Gold and Platinum Grade pairs are recommended for more critical applications such as your preamp and phono stage.To purchase more than one pair, when available, simply change the number in the quantity box which is located just above the advertised price.Please email with any questions and/or concerns.Thank you for viewing my listings.
Item Category: Vintage Electronics
-
Pair of JJ ECC802s / Hi-Performance 12AU7 Preamp Vacuum Tubes
This is a matched pair of tubes that came out of a Rogue Audio integrated amp. I’ve recently upgraded and this pair has less than 200 hours on them.
-
(2) Sylvania 12AX7A ECC83 Preamp Tubes Gray Plates O Getters Tests NOS Amplitrex
(2) Sylvania 12AX7A ECC83 Preamp Tubes | Gray Plates | O Getters. Tested on an Amplitrex AT1000.
-
New In Box Gain & GM Matched Pair Tung-Sol Reissue 12AX7 Preamp Tubes
New In Box Gain & GM Matched Pair Tung-Sol Reissue 12AX7 Preamp Tubes Closely matched for both GAIN & GM. Tubes in test photos is actual tube you will receive. Not just a random tubes pulled from inventory.
-
Matched Pair NOS RCA 6AK5 EF95 5654 Audio Preamp Tubes Gray Plates
Tv7 tested NOS TUBES. 90 % of our tubes are Tv7 tested. All our tubes have been tested for. Tube testers do not test for these problems in the manner in which you think, except to the extent that a tube tester with sensitive leakage detection will find far more “noisy” tubes than a tube tester with only “fair” leakage sensitivity, to the extent that the noise is due to this problem.
-
Genalex Gold Lion ECC82 / 12AU7 Matched Pair – Tested Low Noise Audio Tubes
This is a solid, closely matched pair of Genalex Gold Lion ECC82 / 12AU7 tubes. The mA/V readings are very close between the two tubes, making them a good matched pair for hi-fi, preamp, driver, buffer, and other ECC82 / 12AU7 audio applications.
-
Matsushita Electric Co. 12AX7 Matching Pair Preamp Tubes ‘Mullard Japan’ 3G
We cannot be responsible for what tubes test in another tester.
-
MATCHED PAIR 6N23P (6H23П E88CC ECC88 6922) Tubes Voskhod. Preamp Grade NOS
PAIR 6N23P Voskhod Grey Shield1975. Tested matched pair 6n23p tube. PAIR 6N23P Reflektor Silver Shields1975. PAIR 6N23P Voskhod Grey Shield 1973. PAIR 6N23P ReflektorSilver Shield s 1974. PAIR 6N23P Voskhod Grey Shield 1972.
-
1959 Raytheon 12AU7 PLATINUM GRADE Preamp Tubes Matched Pair 90% NOS =ECC82 6189
Silver Grade tubes are matched within 15%, Gold Grade tubes within 10% and Platinum Plus Grade 1%. You are purchasing a “Platinum ” grade matched pair of tubes. Test scores will average between 90% and 95% of NOS values.
-
True NOS Gold 3-Mica SYLVANIA 6189/12au7 Tubes Maxi PreAmp 2 Tested M0371
Sound Profile; The Sylvania (gold lettering, 3-Mica) JHS 6189 (a military-grade 12AU7WA variant), Users describe describe it as having “good detail without edge,” providing a clear yet non-fatiguing listening experience.