As shown in my diagram, you can connect 2 channels to a 4 channel amp using either the speaker level inputs wired in parallel or by using RCA “Y” adapter cables. All you need is a decent quality pair (2 total) 1 female to 2 male RCA “Y” adapters like these inexpensive ones from Amazon. The sound quality will be exactly the same. https://tubreveespacio.com/foros/viewtopic.php?p=204473#204473 https://tubreveespacio.com/foros/viewtopic.php?p=204473#204473 http://www.crpsc.org.br/forum/viewtopic.php?f=3&t=292258 http://wastedwarlocks.com/forums/showthread.php?tid=143771&pid=316987#pid316987

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