依個你應該叫佢做speaker switch, 因為switch好多種 (RCA switch, XLR switch, etc), 就咁2 in 1 out唔係好明
不過依d平passive switch又真係唔多唔少會有crosstalk, 可以望下支那nobsound, asr有measure過d xlr同rca switch, 表現都唔差
但係ONKYO連zone 2都冇咩? 冇理由咁落後架, zone 2係rca out黎, 可以直入evo 150既ht bypass input, 如果可以食同一個signal其實同preout冇分別