I would like to increase the number of inputs to my Yamaha Stagepas 400i http://www.yamahaproaudio.com/global/en/products/pasystems/stagepas_400i600i/index.jsp The Yamaha Stagepas 400i mixer has i/p of 4 x mono mic/line + 4 mono / 2 stereo line Channel functions Hi-Z switch: CH4, ST/MONO switch: CH5/6-7/8 I am considering purchasing the Yamaha MG12 mixer ( http://www.yamahaproaudio.com/global/en/products/mixers/mg_standard/lineup.jsp ) to daisy chain to the Yamaha Stagepas 400i mixer and thus increase the available number of inputs. the Yamaha MG12 mixer has output channels as follows STEREO OUT x 2, MONITOR OUT x 1, PHONES x 1, AUX SEND x 2, GROUP OUT x 2 I have been reading the user manual for the Yamaha MG10 and also the MG 12 mixer (downloaded user manuals from Yamaha website) but cannot find the answer to a question. Which of the output options (connectors) would I use on the MG 10 and/or MG 12 mixers to connect to the input of the Yamaha Stagepas 400i? I have read elsewhere on the Forum warnings, in a very useful Feb 2012 posting, about overloading the pre-amps on a daisy chained mixer input, and so I am aware not to use the XLR inputs unless I can lower the signal strength but I am also unsure which of the remaining input sockets I should use to take the output from the MG12 . Be aware than my knowledge level meant that my total comprehension of the Feb 2012 postings was limited somewhat I also wondered if I should use a passive DI box in the connection somewhere to reduce any unwanted system noise? Most of the work the band does is live stage performance - we record simply into a Roland CDU device Band composition is Guitars x 4, (lead, rhythm, 12 string, bass), Keyboard, Drums; Vocalists up to 3. Two guitarists use Helicon effects boxes, nominally in mono mode to reduce the demand for inputs at the mixer. Any advice appreciated.