Music123 is having a good deal on the MXR M133 Micro Amp. It lists for $136.23, and is usually available for $79.99, but is currently on sale for $64.24. Not a bad deal at all on a great sounding pedal. If you’re looking to overdrive pedals or the preamp section of your tube amp… this may be the thing you need.
Here is the official description on the MXR M-133 Micro Amp:
The MXR M-133 Micro Amplifier Pedal adds a preset amount of gain, using a single control. With a guitar, this lets you boost your signal for lead work, adjust between 2 different guitars with unmatched output (i.e., humbucker to single coils), or it can supply a permanent boost in a long effects chain where signal drop-off is a problem. Power: Single 9-volt battery or Dunlop ECB-003 AC Adapter – Controls: Footswitch toggles amp on/bypass (red LED indicates on) Gain knob adjusts total output volume when the Micro Amp is engaged.
For those of you not too familiar with this pedal, check out this video by jimdunlopusa: