I've been using the ARC PH3 SE for about 6 or 7 years now. This is my first phonostage. Based on my experience, these would be some of the things that I look for (besides sound quality) in a new phonostage:
1/ Low noise floor
- Typically tube would be noisier than SS, but more natural sounding. And this would also be dependent on the quality of the tubes.
- I've heard the PH7, and it is dead quiet. I believe this has to do with the 6H30 supertube used in this design (vs. the 6922s in my PH3)
2/ Enough gain for low output MC cartridges
- The PH3, like most of tube-based phonostages, does not have enough gain for low output carts.
- I am currently using a Step-Up Transformer(SUT) to compensate for that. And the cartridges I am using have 0.5mV and 0.6mV output. I would not use anything with output lower than that straight into the PH3.
3/ Ability to change cartridge loading on the fly
- For the PH3, you have to solder resistors to change loading. Soldering them was a pain in the rear. I just found out that removing them was even worse.
- On my SUT, you just unscrew some knobs, and place the resistors in between, then screw tight. You can even do it on the fly. Now that's nice. On some of the phonostages, you can do this by pushing buttons.
4/ Multiple inputs
- Nice to have, but not necessary. (If you have multiple arms)
FrankC
1/ Low noise floor
- Typically tube would be noisier than SS, but more natural sounding. And this would also be dependent on the quality of the tubes.
- I've heard the PH7, and it is dead quiet. I believe this has to do with the 6H30 supertube used in this design (vs. the 6922s in my PH3)
2/ Enough gain for low output MC cartridges
- The PH3, like most of tube-based phonostages, does not have enough gain for low output carts.
- I am currently using a Step-Up Transformer(SUT) to compensate for that. And the cartridges I am using have 0.5mV and 0.6mV output. I would not use anything with output lower than that straight into the PH3.
3/ Ability to change cartridge loading on the fly
- For the PH3, you have to solder resistors to change loading. Soldering them was a pain in the rear. I just found out that removing them was even worse.
- On my SUT, you just unscrew some knobs, and place the resistors in between, then screw tight. You can even do it on the fly. Now that's nice. On some of the phonostages, you can do this by pushing buttons.
4/ Multiple inputs
- Nice to have, but not necessary. (If you have multiple arms)
FrankC