The PA4 has been upgraded to include XLR jacks. In its case you have a combo jack consisting of both a balanced XLR and 1/4", while on all other models you have both separate XLR and 1/4"s. All inputs as well as patching options, are accessible via
the front of the units, with only the speaker outs and effects two patching dedicated to the rear. Standard on all units is 2-band EQ on individual channels as well as 3-band EQ for the Master section. Two effects loops give added flexibility in addition to the spring reverb, which is standard on the PA4, 6 & 8 models.
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