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What commercial amplifiers used the 6AS7 power tube? | diyAudio

6SJ7 amp | Stereo amplifier, Vacuum tube, Electronics circuit
6080, 6AS7, 5998, 421A headphone amp tubes
What commercial amplifiers used the 6AS7 power tube? | diyAudio

6AS7 tube headphone amp by Riki from Slovakia

Recording of Homemade 6N6P SRPP 6AS7 Single-Ended Amplifier by Output