Shuguang 12AX7B
The 12AX7B from Shuguang is the stock tube of most amplifier brands*. It provides nice gain, tight bass, punchy mids and silky trebles with overall definition and brightness.
the factory item "12AX7B" is Shuguang's better selection item versus their "12AX7" or "12AX7A". Still the 12AX7B is technical a straight 12AX7 or ECC83 spec tube and of course compatible.
