Can you recommend a suitable sound card?
I am a bit lost. I am ultra interested in good quality, but I don’t understand what you mean by “like to be able to mix with the ADC/DAC”
Sorry for the tardy reply, but I was driving back to the lake yesterday, and now we are getting close to ice out, so I need to get boats tractors and trailers ready. We are now approaching one of he busiest times of the year in Minnesota Lakes country.
First of all what is your location as this will affect my advice. Because of your equipment I have a suspicion you may be in the UK. I need to know where you are.
Next because of the very high quality of your equipment, especially your speakers, you need a high quality system. I strongly recommend pro gear for you. There is a chasm in the quality of consumer grade and pro grade equipment for this task. You have gear where you will tell the difference.
Sure you can use a consumer grade ADC and free software. Is it likely to sound like the LP on your equipment? It is highly unlikely.
I have 16 years experience of this now, with computer audio.
So what is required is a really good turntable. What cartridge do you have in your Rega turntable? Archiving a large LP collection is a lot of work. So if you are thinking of an upgrade to turntable or cartridge, now is the time to do it.
Now you have a good preamp. I think it is a good idea to use the preamp output to the ADC.
Now you need a good audio interface. Your choice here is related to who your vendors are.
In addition to an analog input from your preamp, It is nice to be able to mix in another source especially for a voice over or introduction if you want.
The most important thing is to be able to set input and output gain, so you can set the gain structure optimally. You also need accurate metering against over load. Everyone things digital systems are silent. This is not true because of the requirement for dither. So if the gain structure is not correct then the recording will be degraded just as it would be in an analog system.
Now if you want to record streamed concerts into your computer then you need a ADC/DAC that will record the audio input and AT the SAME time send an output to your system that you can hear simultaneously. This is called loop back. I use it all the time and would never want to be without it.
Next your software does affect audio quality, make no mistake about it. Free software is free and you don't get something for nothing.
Now in the pro arena Protools is dominant and overkill for what you and I need. You need good software with ASIO drivers. The DAC does need to be able to output SPDIF so it can work with domestic gear. A lot only has ADAT which pretty much excludes outputting to domestic gear.
I use
Steinberg WaveLab. I'm used to it and really like it. It is really handy if your software can set peaks, and also optimize dynamic levels Wav, by Wav and or by batch. These issues are important to get your archived recording sounding identical to what comes off your turntable.
I use this
ADC/DAC.
Something like this would probably do the trick for you though.
I can't stress enough that good metering in the hardware and software is crucial. A digital overload sounds way worse than an analog one.
This is my
second DAW I built last year. I got 15 years service out of the first one.
Here are a couple of archived recordings from recordings I made for public radio broadcast. You can see the metering.