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MC Phono preamp gains

If an MC phono preamp supports 45dB to 70dB, then would it work just like MM phono preamp if its gain is set at 45dB?
If that's the case, those phono preamps which support both MM and MC can essentially work as two MM inputs, right?

I am looking for a phono preamp that supports two MM inputs. I already have an SUT for my MC cartridges, so an MC input is not needed, but there exits very few phono preamps which support two MM inputs. So, I wonder if I can use those phono preamps that support both MM and MC as two MM input phono by setting the MC gain to the lowest (45dB).
128x128ihcho
ihcho's avatar
ihcho OP
612 posts
 
Here's the Rhea's spec:
Gain settings (dB): 75, 68, 62, 56, 50, 44, 38, Off. Loading settings (ohms): 47k, 10k, 5k, 2.5k, 1k, 500, 250, 125, 75

So, virtually any combination is possible for all three inputs? Like, having all three as MMs, all three as MCs with different gains and loads, and mix of MMs and MCs?
czarivey
5,946 posts
 
Fully adjustable phonostage is d best.
atmasphere's avatar
atmasphere
11,817 posts
 
^^ only if the phono stage is unstable. Loading of LOMC cartridges is all about the phono section and makes no difference to the cartridge other than reducing its output. The problem is that some phono sections act out a bit when presented with ultrasonic or RF energy caused by the resonance of the cartridge inductance with the capacitance of the tone arm cable (which is why loading seems to help). If the phono section is stable with this energy, you will not hear any effects from LOMC cartridge loading.
jperry
2,448 posts
 
"Ihcho
So, virtually any combination is possible for all three inputs? Like, having all three as MMs, all three as MCs with different gains and loads, and mix of MMs and MCs?"

You are correct and it is very flexible
chakster's avatar
chakster
6,144 posts
 
Or just buy anothen MM phono stage which is no expensive normally, why do you want them all in one cabinet ?
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