![]() ![]() With the wire that I got today - the Male RCA to USB-C - I was able to finally get "USB Audio Device" to display and have it be in the "Input" tab of my Sound system preference. However, with this setup, my new iMac only saw the adapter as an output device and not an input device. The "headphone jack to /USB-C" adapter was new - the other parts worked fine going into my old line-in. Interestingly, when I first connected my preamp to the computer, I used: 1) Male RCA in preamp to Male RCA to 2) Female RCA to headphone pin to 3) headphone jack to USB-C adapter. I probably will purchase an RCA/USB 2.0 wire as well, just in case. I still have to try starting up in safe mode. I did reset the SMC and NVRAM, but still no change. I can play sound effects fine, and the regular sound, such as a CD, an alert, and an mp3, plays out via the iMac Speakers correctly. Thanks for your response, John! The device displays as "USB Audio Device" in the Sound system preference and in Audio MIDI Setup. Any other suggestions to try first before spending more money? I'm not sure what to try next, although I haven't tried an RCA/USB-A wire. When I turned on the built-in preamp, I got interference sound, and when I turned on a record, I got some vinyl noise, so at least it seems like my RCA/USB-C wire works in theory. With the preamp off, I heard nothing except white noise. I did connect a U-Turn Audio turntable with built-in preamp directly to my iMac. However, I can't get any sound (other than white noise) from the turntable to be heard from my iMac. I can see this connection in the "Input" tab of my Sound preferences. I did change the wire between the preamp and the computer to be two male RCAs (preamp) to a USB-C (computer). I still have my Rega and my TC-750LC phono preamp. It all worked great.Ī few days ago, I upgraded to a new iMac, which is running macOS Catalina. The software that I used (and still use) is VinylStudio. My old iMac had a dedicated line-in port. For the past few years, I had my Rega RP1 turntable connected to a TC-750LC phono preamp (TCC Audio & Video) and then connected to my 2011 iMac, which was running macOS Sierra. ![]()
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