T-12AY7 Vacuum Tube, 12AY7, Triode, Dual
New-Old-Stock (NOS) tube.
The 12AY7 is a miniature medium-mu twin triode designed primarily for use in low-level stages of high-gain audio-frequency amplifiers. The tube is specially designed to exhibit low noise and low microphonic output. In addition, hiss and hum output voltages are controlled to limits consistent with requirements of low-level amplifier applications.