Pedal is overall in good shape for having been on a pedalboard. There's some velcro residue on the back. The serial number sticker is marred but still fully legible. Serial number is 999, meaning it includes the secret 4th standard tremolo mode (detailed below). No box or literature included. Get a great and versatile tremolo pedal at a real nice price!

The DynaTrem Dynamic Tremolo by Keeley Engineering is an all new type of tremolo that is dynamic and responsive to your playing.  Your playing controls the Rate and Depth. The harder you play, the more it responds. Play softly and it relaxes. Set the sensitivity with Rate or Depth controls and you have an unparalleled ability to be expressive with your guitar and tremolo.

Tone Trio – Three Modes

• Dynamic Rate – Your playing strength controls the Rate. The harder you play, the faster it modulates! Relax and play softly and the tremolo almost stops.
• Dynamic Depth – Play gently and it just barely throbs. Play aggressively and it and pulse hard and deep.
• Harmonic Tremolo + Reverb Mode. Yes that phaser/vibey, soulful and sweet sound! We have crafted our own circuits to give you a sound that is sinfully good. Slippery and smooth, you won’t want to gig without it. Add Reverb by adjusting the SHAPE control.

Wave Table

With a spin of the SHAPE control you get 4 wave-forms:  Ramp Up, Sine Wave, Ramp Down, and Square Wave.

4th Mode! All DynaTrems after serial number 300 have a hidden feature mode: Standard Tremolo. Turn the Shape knob all of the way down and it become a standard triangle wave tremolo in the Delta Rate or Delta Depth modes

Or, when in Harmonic Tremolo Mode the Shape control is Reverb!