On Friday 18 July 2008, Eben King wrote:
> >
> > Audacity also has equalization presets for recording from vinyl without
> > the phono preamp.
> >
> > Those jacks in the back are probably 3.5mm stereo jacks, so you'll need a
> > RCA to 3.5mm stereo adapter (can often be found in dollar stores or radio
> > shack).
>
> You'll probably get lower quality (more noise and crosstalk between
> channels) doing it that way.
It's a matter of mismatched impedance and signal strength. The signal out of
the turntable is very very low. A couple of mV actually. Whereas LINE in is
something like 500mV. This is why you want to use a pre amplifier to boost it
up to LINE level.
Without it the mismatch will give you a lot of white noise (like the 'sh'
sound). Not how I would want to record anything for pleasure use.
--Steve Szmidt
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