MXR M87 Bass Compressor Effect Pedal - Used AC61121 which shifts the bridge position

which shifts the bridge position closer to the center of the lower bout

With the Universal Audio OX

the Blues Junior is in very good condition showing very few signs of wear

The TONE knob serves as a tone control and variable low-pass filter

This guitar is in very good condition with slight signs of pick wear

MXR M87 Bass Compressor Effect Pedal - Used AC61121 which shifts the bridge positionThe MXR M87 Bass Compressor offers bass players plenty of control over their sound with the helpful addition of a gain reduction indicator so you can see exactly how much the pedal is squashing your signal. MXR's patented "Constant Headroom Technology" helps to keep your signal clear and transparent. This particular M87 Bass Compressor was not even used and comes with the original box.