The ~900 is a ferocious fuzz pedal featuring two cascading JFET gain stages. It offers a very wide range of gain, adds delicious harmonics and, if given the opportunity, will slap the ice cream cone right out of your hand.

The INPUT section is a ‘mu-amp’ design. The INPUT knob controls the level going into this first gain stage – you can go from clean with lots of headroom, to completely slammed and distorted – and everything in between.

The FUZZ knob controls the level going into the second JFET gain stage. This section is very dependent on the level of the INPUT.

The BIAS knob adjusts the bias of the second gain stage. This gives control over the saturation symmetry, and can also allow gating when turned up high enough. The BIAS knob is especially interactive with the FUZZ knob.

The VOLUME controls the master volume output. This pedal has a lot of gain to offer and can get quite loud.