A buffer/booster operated on a small and medium sized aluminum chassis with JJ Electronic 12AX7 ( ECC83S ) and an internal voltage of 100V.
Buffer with volume =Min, automatically switch to the booster circuit (maximum +26dB, 20x) when raised from Min.
A low-lying sound that is distorted and low-range compared to 12AU7BB. Not only is it used on electric guitars, but it is also highly regarded for its use on electric bass.