The MOEN MO-CP Uni-Comp Compressor features an ultra fast response to signal, by accenting any weak signals and attenuates loud ones to make chords come alive and really pop.
On it's own it will really round out, elevate and accent the overall sound. Sustained notes, power chords are very attainable and balanced. Place this in- line before a favorite Distortion or Drive pedal and the Uni-Comp will push it even harder, smoother and more powerful.
There is also very little background noise here on the Uni-Comp where some units push the signal too much (and push the noise).

A great feature on the Uni-Comp is the Bias (EQ) Knob where you can balance the frequency response from Low to High..... you can even use it with a Bass Guitar! .

1. Vol
   Output Volume Knob
2. Comp
   Compression Depth Knob
3. Bias
   Frequency Response Knob

Features:

• Ultrafast response
  
• Extremely low noise
• Twin filter avoids low-freq modulation
  
• Flexible EQ knob
• BIAS LED indicates depth of compression
• True bypass stomp switch, no signal loss
• Strong Metal Casing
  

Model: MO-CP
| 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.