Michael Klein Audio Design STULL Modulated Reverb

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Like the Lonely Ghost, the STULL modulated reverb utilizes the Spin FV-1 controlled by a 24LC32A EEPROM to create a complete, rich, and hopefully atmospheric reverb. Moreover, your dry signal importantly remains 100% analog and tonally transparent. Each effect is mixed back with the dry signal using an analog mixer (more below), with noon being a 50/50 mix.

STULL gets its name from a small town in Kansas not far from where I grew up. It is notorious for being home to one of the gateways to Hell and is consequently controlled by demons. This allegedly gateway is found in the Stull Cemetery. The STULL graphic on the pedal was inspired by and largely pulled from a stone monument in the Stull Cemetery.

Controls

DWELL - Adjusts how long the reverberated signal decays out. At minimum settings, the reverb is short, and as DWELL is increased the reverb last longer.

DEPTH - Because STULL is a modulated delay, there are controls for the modulation depth and rate (much like on a chorus pedal). DEPTH adjusts how dramatically the reverb is modulated. At low settings, the modulation is subtle. As DEPTH is increased, the modulation becomes more prominent.

RATE - Like with DEPTH, the RATE control affects the reverb modulation. In this case, RATE controls the speed at which the reverb is modulated. At low RATE settings, the modulation can still be quite subtle even with dramatic DEPTH settings. As RATE is increased, the reverb is modulated more quickly, and not only becomes more noticeable but more “sea sick.

MIX - Is a true analog mixer that sets the balance of dry to reverb signal. At minimum MIX settings, your signal is 100% dry. At noon, the balance is essentially 50/50. At maximum MIX, the output is 100% modulated reverb. The MIX control is incredibly helpful in getting the right balance, along with DWELL and RATE settings.

VOL - Controls the global output level of the pedal. This can be easily set to be slightly quieter, the same level, or louder than your bypassed signal volume. Again, this can be used to help achieve the intended feel when STULL is in use.