The MMSR, like the original Pre EB units, doesn’t have any amplification or gain when the knobs are set at their Mid Points to increase levels beyond the output of the pickup.

The MMSR preamp has the same input stage and treble control as the Pre EB to allow for the same interaction between the treble control settings and the pickup.

As for the Stingray sound, it’s not the preamp alone which makes it, it’s the complete combination of all that the instrument consists of.