Step-By-Step Operations GuideLet's try the 488 mixerBefore connectionsInput connectionsPowering onHeadphone connectionRouting inputsPanningTo learn how the mixer works, first you need to plug a signal sourceinto one of the ten 1/4" jacks located at upper top of the 488, in youreasy reach.As an example, we'll use a microphone as the source.• Turn all the TRIM controls all the way to the left/LINE position.• Turn all the other level and EQ controls to their center "0" position;bring all the faders down; and set all the switches to OFF or totheir Up position.1. Have in hand a dynamic microphone and a set of stereoheadphones.2. Plug the 1/4" plug on your microphone cable into the leftmostMIC/LINE IN Jack for channel 1.3. Turn the 488 on. (The POWER switch is located on the back,beside the power cable.)4. Plug your headphones into the front PHONES jack, so you canhear the input signal going to the mixer section of the 488.5. Set the channel 11NPUT ASSIGN switch to the left/MIX position.6. Turn the channel 1 PAN control all the way to the left/ODDposition.