brendanmc:
thanks for the input.
i've been doing a little googling about the NAD 315BEE, it seems to have great reviews (and a good price). i have a similar question to lydgate about how it should all fit together, could you please explain.
again thanks for all the expert advice
Hi brendanmc,
My opinion is that if the turntable has line level outputs, you should just put those straight into any input of the NAD amp (or any input of any amp besides a phono input). On an amp all inputs are line level, so you can plug a tuner or CD player or whatever into them. The only input that would differ is a phono input, which would apply RIAA equalization to whatever you plug in. Apparently NAD amps don't have phono stages so you won't need to worry about this.
With a CD player or a sound card, using SPDIF into a DAC makes sense as it will allow you to take the exact digital signal from the device, then use the DAC to convert it to an analogue signal. Now every CD player with RCA outs has a DAC inside it -- the point of using SPDIF to an external DAC is that you think you can get a higher quality analogue signal by using an external device.
With the turntable, you might use the SPDIF to go straight into your computer for ripping. But by doing this you're using an ADC (analogue to digital converter) within the turntable, to get a digital signal to encode. But if you then put the signal through the DAC and then a speaker, you've effectively just digitized and undigitized the analogue signal for no reason. I can't see how this will do anything but degrade the signal.
Sorry if I'm being repetitive but to try to clarify, it makes sense to do:
ipod (digital) -> DAC (convert to analogue) -> speaker (analogue)
It does not make sense to do:
vinyl (analogue) -> SPDIF (convert to digital) -> DAC (convert to analogue) -> speaker (analogue).
If you've already got an analogue signal from the turntable, then just put it straight into the amp.