Is a separate phono pre really necessary?


I have an upgraded Rega P3 that is now essentially a P6 (groove tracer subplatter and counter weight, Rega Neo ps) that has a Soundsmith Zephyr MIMC star mounted on it. It is then connected to a Park Audio Budgie Ten SUT and then to a Rogue Audio RP-5 preamp.

This question is about the phono stage in the RP-5. Would upgrading to a separate phone preamp of around $1,000 to $2,000 be a worthwhile upgrade from the internal phone preamp in the RP-5? And if so which phone pre do you guys recommend (notwithstanding all the caveats about subjectivity). I'm thinking of the soundsmith mcp-2, PS audio stellar phono, parasound jc3 jr., maybe a Manley Chinook if I can find a good deal.

The wrinkle is the loading requirements for the zephyr mimic star: >= 470 ohms. This makes a lot of phone preamps really not suitable for this cartridge (hence premaps with adjustable loading via a pot) because of the static loading options are mostly well below 470 ohms on most phono preamps

smanuel

@beatlebum That was another option I was considering. I was a bit hesitant because of the loading options are not as flexible as the amps I mention but Sutherland seems to consistently get good reviews which speaks well of the brand.

@bkeske I had the same feeling at 1k as well. But I've decided to use a SUT for greater dynamic punch but with the loss of that shine and sparkle you mentioned because of the need to use 47k with the SUT. This was why I'm tentatively leaning towards phono stages with adjustable loading (and maybe higher gain than what I currently have at +60db)

The wrinkle is the loading requirements for the zephyr mimic star: >= 470 ohms. This makes a lot of phone preamps really not suitable for this cartridge

You can make cartridge loading plug with desired resistance for your phono stage.

https://www.hifisystemcomponents.com/forum/cartridge-loading-plugs_topic1246.html

@smanuel 

I’ve settled at 1,000 and 60db on my Hagerman. I also have 64 & 68 available (nice to have for lower output carts), but the MIMC sounds pretty darn good at 60.