Unless there is a feedback loop in your patch, sending audio through send~ and receive~ will not introduce latency. Check it using [capture~]. If MSP detects a feedback loop, the minimum amount of delay is introduced (a signal vector). There's a bunch of posts on this if you search the forums

I thought send~/receive~ always introduced one vector worth of lag regardless?

yes, Rodrigo I heard the same (and as far a s i know this is a cheap method for feedback loops). Could anyone explain/confirm? kasper

see yourself:

Seems like most of what is being asked was in my initial post, but for the doubters, here's Andrezej's patch using capture instead of record. Search for '1'in the capture text of both the click~ and receive~, and if the indexes correspond...

One more way: