beoaus: The recording process would be done (ideally) in a different area to the the BS9000. I may be able to do some juggling though...
With the Turntable connected to the BS9000 (aus port) where would I connect the PC for recording? I have a BV7 and gear in other rooms as well... is the headphone socket good enough for recording?...
There is a three step path from turntable to computer:
(1) The weak output from the turntable must be amplified up to normal line level. This step also involves the RIAA frequency correction.
(2) The analog line level signals must be digitized.
(3) The raw material from the record must be broken into named tracks and converted to the format of preference.
For step (1) you need a phono pre-amplifier. You always need this preamp, even if you are just listening to the turntable, in which case you connect the preamp between the turntable and the BS9000. The Pro-Ject box does this job, as would any quality phono preamp.
How to accomplish step (2) depends upon your PC. I have an iMac with line input and a high quality digitizer built in. In the Linux/Windows world I believe the line input is replaced by a microphone input which doesn't do exactly the same job. In this case the Pro-Ject box will do the digitizing and output the digitized signals via USB to the computer.
Finally you need some music processing software for step (3). There is lot of shareware around. I use Amadeus Pro, but it's Mac only.
As for the question if the Pro-Ject box solves your problem, I think the answer is yes, at least steps (1)-(2), and especially if you have a Linux/Windows machine.
BE AWARE: The Pro-Ject box is MM only! While many phono cartridges use the Moving Magnet (MM) principle and outputs between 2.5 and 7 mV there are some, especially top quality ones, that use the Moving Coil (MC) principle with a much weaker output, less than 1 mV. Some phono preamps accept both (with separate inputs), but the Pro-Ject box is not one of them. Then there are MC cartridges with inputs like MM, and there are Moving Iron cartridges. Make sure your cartridge corresponds to MM voltage before you buy the Pro-Ject box.
Also, I have some doubts about the quality of the digitizer in the Pro-Ject box. The technical specifications say 16-bits/48 kHz. 16 bits is what you need for CD, but for other digital formats you may want 24. Also, 48 kHz sampling rate seems low, both by itself, and if you want to burn a CD with 44.1 kHz, the end result may be better if the starting point is higher than 48 kHz, like 96 kHz or 192 kHz (or if you just want to make a CD, making it 44.1 kHz from the beginning could be the best). Well, the ear is the final judge, and I have just looked at technical data.
If the Pro-Ject box fits in, it will let you record vinyl, and it will enable you to just listen to records as well. Your connections would be:
RECORDING: Turntable -> Pro-Ject box USB output -> Computer's USB port
LISTENING TO VINYL: Turntable -> Pro-Ject box line output -> BS9000's AUX port
Sigmund