As per above... "You will note that phono preamps are very expensive..."
I wonder what south_park considers to be "very expensive". Everything is relative, and reasonably good, quiet, entry-level phono preamps can be purchased new for around $300, plus or minus (and obviously used ones would be cheaper). Try to find a preamp with a decent phono stage for that price.
If you, Zenieth, have another preamp to use, then sure, go for it. But don't purchase another preamp just for this exercise.
By the way, I wouldn't recommend using both inputs on your amplifier at the same time. I may have misread your original question, in fact I'm still not certain what your intentions are, but if your plan is to use both the XLR and the RCA inputs on your amp, driven by seperate preamps, bad move.
I wonder what south_park considers to be "very expensive". Everything is relative, and reasonably good, quiet, entry-level phono preamps can be purchased new for around $300, plus or minus (and obviously used ones would be cheaper). Try to find a preamp with a decent phono stage for that price.
If you, Zenieth, have another preamp to use, then sure, go for it. But don't purchase another preamp just for this exercise.
By the way, I wouldn't recommend using both inputs on your amplifier at the same time. I may have misread your original question, in fact I'm still not certain what your intentions are, but if your plan is to use both the XLR and the RCA inputs on your amp, driven by seperate preamps, bad move.