1.) For small cafe type rig: Sennheiser e945 vox & Martin D18/M80 both straight into either my Loudbox Artist (fav!) or Performer pending room size...it's all I need
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HOWEVER 
2.) ...for larger & outdoor rig: Martin 000-18e Retro/F1AP or (MIJ Tak KC70/Cooltube) into Line 6 wireless > Boss AD-2 > MXR Carbon Copy > Neunaber Seraphim > Loudbox Performer and if needed, either a tandem 2nd Performer, or a PreSonus Air 10 powered speaker... btw I rarley use the AD-2, only if I need additional anti-feedback notch filtering.
eric