These NOS 6922 tubes are the Military Low Noise and ruggedized equivalent to a 6DJ8 and an ECC88. These tubes were. They cited a better bottom end and “less offensive” high frequencies as two of the reasons for their choice.
2 MATCHED NOS 6922 (Low Noise 6DJ8) ECC88 TUBES PHILIPS FOR PREAMP MIC w/Bonus
These NOS 6922 tubes are the Military Low Noise and ruggedized equivalent to a 6DJ8 and an ECC88. These tubes were. They cited a better bottom end and “less offensive” high frequencies as two of the reasons for their choice.