12AT7WC-USA NOS - TUBE AMP DOCTOR

TAD 6SL7GT TUBE All preamp tubes labeled Premium Selected have passed the following tests: Low Noise Test Microphonic Test Gain Test Sonic Tests Shock Tests Listening Tests Balanced Output Test

TAD 6SN7GT TUBE

KT66 TAD MATCHED QUADS

TAD7027A MATCHED PAIR

TAD 6922/E88CC TUBE