If you are using a guitar with humbucker pickups, leave the right knob on the NORMAL position. If you are using single coil pickups, you may want to experiment with the DARK setting. The purpose of the NORMAL/DARK switch is to tame the top end, which in some cases tends to get harsh when using single coil pickups, thus allowing you to switch between single coils and humbuckers while leaving the amps settings intact.

Next, set the left knob to SMOOTH. This position implements a first-order realignment filter that affects carefully selected portions of your guitar signal's low end. The audible effect will be less bass content and slightly less overall volume. This loss of power is normal and indeed the very principle by which the S&S operates! We now invite you to re-discover you amp's settings and encourage you to turn the volume up to achieve the new desired loudness level, and also turn up the bass control. You will find that at settings where you would normally get a "flabby bottom," your amp will now have a very clean and punchy low end. Furthermore, you will find that higher levels of low midrange and bass are possible without undesired breakup. That is to say if, for example, without the S&S you could only set your bass control to 4 until breakup occurred, now you will be able to set it up to, say, 8 and your amp will still sound bassier than it previously did at 4, but without any flab.

If you find that the SMOOTH setting is not enough to clean up the muddy low end in your rig, try the SLIM setting. This setting takes everything one step further, and the effect is quite noticeable. You will typically not need to use the SLIM setting unless you play a guitar with humbucker pickups. Expect further loss of volume on the SLIM setting, but at the same time, more control of the annoying transient low-end buzz.

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