Here is a great opportunity to own a fantastic pair or quad selected from 100 new in the box RCA 12AU7WA.
Don't Hesitate once gone, good luck finding any more.
Matched QUAD NOS RCA 12AU7-WA vacuum tubes, also known as 6189 or ECC802S. These tubes are treasured for their soundstage presentation, quiet noise floor and accurate detail.
Made in the United States, these tubes are a testament to the era's craftsmanship.
All tubes are tested for close tolerances and confirmed before shipping.
RCA's reputation for quality is evident in these tubes, which are designed to deliver exceptional performance for audio aficionados. Whether for audio amplification or vintage electronics collectors, these tubes are a must have addition to any collection.
These tubes are selected from a sealed case of 100. Matched pairs and or quads with same production date. These 6189 = 12AU7-WA tubes are the best of its kind.
The “A “ identified on each tube stands for LOW-NOISE. This is a requirement to meet stringent military specifications.
RCA’s answer to the ECC802s as identified on Telefunken Ad data sheet. See attached photo.
MADE IN U.S.A.
1957 29th week
6189 = ECC802S
U.S.A. EQUIVALANT TO
TELEFUNKEN ECC802S!
NO other RCA tube has this unique TRIPLE-MICA INNER-CONSTRUCTION combined with DUAL PLATINUM STABILIZER BARS and reinforced stapled plate design The top mica shield eliminates and contamination from getter flash on to the plates. Costly to make but a significant improvement in long term stable operation.
Summary:
"A" DESIGNATION = LOW NOISE
BLACK-PLATES
D GETTER
MADE IN U.S.A.
NOS MATCHED PAIR WITH MATCHING DATE CODES
Balanced & Matched
Zero (0) Heater-to-Cathode leakage! The Best!
NOS Excellent performance, smooth midrange, Phenomenal -Tone Great sound stage.
**Tested with actual working voltages on Neuberger RPM360 calibrated German tester.**
Your tubes will be tested and guaranteed to conform to OEM specifications
Opinion:
Extremely rare to find any top audio tube in this condition. As a collector it simply does not get any better. For the ears hearing is believing.
Note: I am listing this one quad at a time. Interested in more simply contact seller to organize purchase through eBay
All The Best
Krabafcent1