Don't know too much about the ARC phonos, but from everything I've read they seem to be top-notch.
I would presume that a better tonearm will be a noticeable improvement. A few years back, I tried a Michell Gyro first with a Tecnoarm and Benz M2, before settling on a Gyro with a Graham 1.5tc (upgraded to 2.2) and Benz L2. The same setup with the Graham arm was far better than with the Tecnoarm. The top end is more open, the bottom end is tighter, and the mids are smoother. There was something I found unnatural about how the highs, mids and bass were held together by the Tecnoarm as compared with the Graham.
Now, I haven't tried the Clearaudio table or ARC phono stage, but can say for certain that even an older Graham arm seems to hold a Benz wood cartridge better than does a Tecnoarm.
I would presume that a better tonearm will be a noticeable improvement. A few years back, I tried a Michell Gyro first with a Tecnoarm and Benz M2, before settling on a Gyro with a Graham 1.5tc (upgraded to 2.2) and Benz L2. The same setup with the Graham arm was far better than with the Tecnoarm. The top end is more open, the bottom end is tighter, and the mids are smoother. There was something I found unnatural about how the highs, mids and bass were held together by the Tecnoarm as compared with the Graham.
Now, I haven't tried the Clearaudio table or ARC phono stage, but can say for certain that even an older Graham arm seems to hold a Benz wood cartridge better than does a Tecnoarm.