The MOEN MO-DB Deep Blue is designed with JFET transistors. This effects pedal is perfect for a rock, blues or jazz guitarist. The overdrive, controlled by the Drive knob, produces the classic smooth harmonic sound traditionally associated with blues and jazz. The Tone knob allows the guitar player to suit his preference to a more bass or treble tone. The level is to crank it up where you end up close to metal territory.

True bypass switch means that the input jack is connected directly to the output when the pedal is switched off. The sound coming in is totally unaffected by any filter or circuitry.
Special tool-free battery cover design, very convenient for battery replacement.

1. Level
   Output Level Knob
2. Drive
   Gain Knob
3. Tone
   Tone Knob, Sharpen by turning clockwise

Features:

• Warm And Smooth Tone
  
• Rich Harmonics Produces Tube-like Sound
  
• Classic Drive/Tone/Level Knobs
• Solid Metal Enclosure
• True Bypass Stomp Switch
  

Model: MO-DB
| Manual | Sound Clip1 | Sound Clip2 | User Reviews |

Although these pedals are designed for electric guitar, their analog design makes them compatible with most other electric instruments, including microphones.

Visit this link for information about all types of guitar effects and what they actually do.