Analog to digital interface

The reason I'm reluctant to throw my two cents worth in, is because it's old, and there is a good possibility a better way, or something new has come along since then.

If you were thinking about a new cartridge, or some other upgrade, now is the time; it will come through crystal clear on playback.

I would recommend a Focusrite Clarett 4Pre with a Farad Super3 linear power supply.  Even though it's named "4Pre", this actually has 8 analog inputs.  A lot of people don't realize that the linear power supply delivers a significant impact to sound quality.

If you want a more expensive "industry standard" type of solution, you can look at RME Fireface UCX with a Farad Super3 linear power supply.  It's a whole lot more expensive.  I'm not really sure if it will sound that much better though. 

Also, there are cheaper linear power supplies (such as Teddy Pardo, Keces, Teradak), but the Farad is close to the best in my opinion.

The Focusrite uses 12V DC and the RME uses anywhere from 9V-18V DC, so a 12V linear power supply will be fine for either.