・I bought this to switch between two amplifiers with one set of speakers, but I completely forgot about my subwoofer. What an idiot (lol). Listing it for sale with a heavy heart. ・I connected it once after receiving the item, and it worked without any problems. ・I think it's in overall good condition. ・ Function: Connects one amplifier to two pairs of speakers ・ Switch: A/B selector switch ・ Terminals: Banana plug terminals ・ Color: Black ・ Size: 10cm(D) x 15cm(W) x 4.6cm(H) ・ Contents: Main unit only (no original box, no instruction manual)