I couldn't find another thread specifically about this, so... I just got a PC Engine controller extension from Console5.com and it's fantastic. The cables on these controllers are so damn short, this six-foot extension is a dream. I tested it with Avenue 6 and Avenue 3 and even plugged my multitap into it, and everything worked great! I don't know if folks here have already sung the praises of Console5 or not, but I'm ordering more cables from them in the very near future! (Like maybe tonight.)