① ⑨
② ③
⑦
④
⑥
⑪
⑤
⑩ ⑧
①INPUT (input jack)
Input jack to connect to the output of 
guitar, other effects or related 
equipment.
②OUTPUT (output jack)
Output jack to connect to input of 
amplifier or other effects.
③DC IN (power input jack) 
A jack for connection of power supply 
to effect.   Be sure to use the correct 
Maxon AC adaptor. 
Turn down amplifier’s volume to 
the minimum before connecting 
AC adaptor to the product in order not 
to damage other connected 
equipment.
●A compressor with a real tube inside.
●Natural compression that is not obtainable from digital effects.
●With little tone coloring, RCP660 is good for both guitar and bass guitar.
●Equipped with a boost switch for quick changes between solos and rhythms.
●Reliable footswitch and easily viewable LED for trouble-free performance.
  RCP660 Real Compressor
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