IMO and IME, the variable resistance is actually fairly critical, more critical than some of the internal component choices that can be made or more important than buying a better unit or not.
Ie, that if considering a preamp that is supposed to be better than the jr unit mentioned here..that the better unit had better have a variable resistance trim as well. Otherwise it might be a waste of time.
It is very critical in that my experience is: that to get the best sound out of a given low to mid output MC cartridge..exact Resistance is a critical thing.
Ie, not 525 ohms, or 487, but exactly 511 ohms -if that is the number that comes up. And given the opportunity to try resistances by the inch.....this is what you will find. That with low output and low-mid output MC carts--exact resistances become critical. 'Easily heard' kinda critical. IMO and IME.
Ie, that if considering a preamp that is supposed to be better than the jr unit mentioned here..that the better unit had better have a variable resistance trim as well. Otherwise it might be a waste of time.
It is very critical in that my experience is: that to get the best sound out of a given low to mid output MC cartridge..exact Resistance is a critical thing.
Ie, not 525 ohms, or 487, but exactly 511 ohms -if that is the number that comes up. And given the opportunity to try resistances by the inch.....this is what you will find. That with low output and low-mid output MC carts--exact resistances become critical. 'Easily heard' kinda critical. IMO and IME.