P-Wave does have an analog input and comes with some vinyl-recording software! The usb device will have less PC-noise issues, not that a sound card couldn't work better.
steve
This idea of computer noise is common but unfounded. Almost every single CD produced is recorded by a pc with soundcards that are inside the pc or worse inside a rack cabinet with a pc or three...
your statement is ambiguous, the USB device will have less noise, yet the soundcard might be better?
technical specs:
Revolution:
dynamic range: 106dB (A-weighted)
signal-to-noise ratio:
A/D: 100dB (Typical, A-weighted)
D/A: 107 dB (Typical, A-weighted)
THD: 0.003%
output sample rates (kHz): 32, 44.1, 48, 88.2, 96, 172.4, 192
Powerwave:
Output Level/Impedance
RCA out –2.0dBu , 600 ohms
Frequency Response (20Hz –20kHz)
RCA IN to RCA Out, Via USB Loopback +/- 1.0dB
Total Harmonic Distortion (20Hz – 20kHz)
RCA IN to RCA Out, Via USB Loopback
0.03% Line Level Mode
0.07% Mic Level Mode
Signal to Noise Ratio 85dB
nothing on sample rates....
you are talking about at least a 10% difference or higher across the board.