hi, i have an old sherwood r-500 and a harman/kardon avr-20, i also have three yamaha receivers that i had no problem patching or linking those, from record out to front rca inputs, however the old sherwood and haman/kardon don't seem to have record out, or zone two, so my question, is there any outlet i can use on these two receivers that will transfer audio as through the first receiver and so on? i can patch stream through great, but can't go on to next receiver, only with these two
