HAMRADIO purpose: I hoped to use this device to interconnect the hamradio tranceiver (ICOM IC-7300) and iMac computer. I connected the tranceiver to A and the iMac to B and used standard iPhone headphones with a mic and 3,5mm jack. My first observation: 1. The headphones work fine. Switching between A and B is seamless, no problem, audio is great. 2. I tried to transmitt (PTT): When iMac is connected to B and A is selected as output, there is a big interference, impossible to use the mic for the transceiver input. The same happens when I disconnect the headphones, select B as output and I do PTT. 3. When selected B as output, the mic works fine on iMac. The delivery was very delayed, the seller declares the delivery in 4-7 days, it took 1 month to deliver the package.
Nice package, well protected, the item is nice and cute, small but whel constructed. Very good service