RCA Black Plate 6189 JANCRC12AU7WA 12AU7 ECC82 Vacuum Tube Triple 3 Mica Industrial / Milspec For Your Univalve Or Bottlehead March 03 2025 These three RCA 6MD8 tubes

These three RCA 6MD8 tubes are new old stock

This matched pair of Ken-Rad-MANUFACTURED 6K6 6K6GT tubes was tested on our Maxi Matcher 2 with 325 volts on the plates and a bias of -36 volts for shorts

It is also autographed by Mr

" AND YOU HAVE NOT ACTUALLY RECEIVED IT

ETSY MAY REIMBURSE YOU EVEN IF IT WAS STOLEN

RCA Black Plate 6189 JANCRC12AU7WA 12AU7 ECC82 Vacuum Tube Triple 3 Mica Industrial / Milspec For Your Univalve Or Bottlehead March 03 2025 These three RCA 6MD8 tubesThis milspec industrial grade RCA black plate 6189 JAN CRC 12AU7WA 12AU7 dual triode was tested on our Maxi Preamp II for shorts, gas, dynamic range, transconductance and gain. There were no shorts, noise or gas and it tested as follows: Dynamic Range: 85. 7 dB 84. 8 dB ( 92 dB is the Maxi Matcher's noise floor) Transconductance: 1492 1460 (New is approximately 1450) Gain (Mu (): 16 16. 7 (New is approximately 17) This tube has 21 MM black plates; two