Since the JPS2 is essentially the line stage of the JP80 (not sure how the extra tube for the CD input fits in, though, if you have it in your preamp), Arthur's mods for the JP80 should be applicable for that unit, though I'd want a qualified technician to confirm that. If your hearing and listening biases are similar to Arthur's, you might like the difference.
What is the JPS3? Is that a standalone phono stage? Never saw it here in the states.
What is the JPS3? Is that a standalone phono stage? Never saw it here in the states.