The PRS Mary Cries optical compressor pedal is intuitive and sounds incredible. Based on the storied LA-2A, Mary Cries will thicken your tone, help control signal peaks, lengthen sustain, and push your tone without losing definition or clarity. Depending on your settings, it can be used as a boost as well as a straightforward compressor. Through-Hole Mounted We spent considerable time comparing available electronic components, and through-hole soldering enables us to utilize the best-sounding parts. True Bypass PRS pedals are true bypass, so you can stay connected to your amp. When they are off, they are out of your signal chain, and the tone of your instrument can be heard without coloration. Made in the USA PRS Pedals are designed by PRS Guitars in Stevensville, Maryland and proudly made in the USA. SPECIFICATIONS Pedal Type Optical Compressor Analog/Digital Analog Inputs (1) 1/4" Instrument Outputs (1) 1/4" Instrument Bypass Switching True Bypass Amperage 8 mA Power Sources 9V DC Power Supply, regulated and/or isolated (not included) Batteries (1) 9V (not included) Length 4.7" Width 3.7" Height 1.37" Weight 1.1 lbs