w w w . a c o u s t i c a m p l i f i c a t i o n . c o m6fRoNt pANELThe AG120S Acoustic Performance system is designed for up to four inputs, which can be any combination ofmicrophones and instruments. One suggested operation of the AG120S would be to use Channel 1 for vocalmicrophones, and Channel 2 for instruments. Its EQ and effects can be tailored for each channel independently,while the Stereo Aux Input (see #9) allows for true stereo playback of your MP3 device.321 21 5 6 7 10 114 8 91. Dual combination balanced XLR and 1/4” 2-conductoracoustic instrument inputs. These four inputs maybe used simultaneously, with each having their ownvolume control. You may plug an acoustic instrumentand/or microphone into any input in either channel.2. Volume controls adjust the overall loudness of theindividual inputs of the amplifier. If your acousticinstrument has a preamp, you should set the volumecontrol on your instrument at about half volume.You can then adjust the amplifier volume to yournormal playing level and still have room to increase ordecrease your volume as needed from the instrument.3. Low frequency control set to boost (15 dB) or cut (-15dB) frequencies at 80 Hz. This controls the lowestfundamental frequencies to enhance the warmth andthe deep, full tones of your acoustic instrument.4. Midrange frequency control set to boost (15 dB) orcut (-15 dB) frequencies that you can sweep between500Hz and 1.2kHz. Moving, cutting or boosting thesemid frequencies will give you maximum control overthe body of your tone. This control can also be usefulin eliminating acoustic feedback. It also allows you tocontrol the definition and voice of youracoustic instrument.5. High frequency control set to boost (15 dB) or cut (-15dB) frequencies at 10 kHz. Increasing this will enhancethe clarity and brightness of your acoustic instrument.6. The Effect Level control is used to determine howmuch of the selected effect is applied to your music.Each channel has an independent Level control forthe effects.7. The Effect Select control for each channel allowsyou to select from one of 16 different stereo effectsincluding reverbs, delays, true stereo chorusesand combinations of the above. The 16 effects aredetailed around the face of the knob. A unique anduseful feature is that a different effect can be selectedfor Channels 1 and 2. See page 7 for effects list.8. The Master Level controls the overall stage volumeof the amplifier. Changing this level control will notaffect the line out levels on the back of the amplifier,therefore will not change your signal sent to a live orrecording mixing console.9. This 1/8” 3-conductor input jack will allow you toplug in a CD, MP3 player or any other source so youcan play along. This input has a separate level controlwhich allows for fine tuning of the input signal.10. Power LED will illuminate with a soft blue colorwhen the amp is turned on and ready to play.11. 1/8” headphone jack will disconnect the internalspeaker when used.