Hey guys, basically I took my Studio preamp to my tech to have the 2c+, Bass shift and pull deep mods and he performed them for me.
However, he was reluctant to change the input grid 1M resistor to 680k as he says this lowers the input impedance of the preamp. I asked him to follow the mod sheet and swap the 1M for 680k anyway.
I'm wondering now if the 680k input resistor on the Bass shift mod is a mistake ... Pretty much every amp has a 1M resistor at the input, so I can't understand why somebody thought changing it to 680k as all it does is mess up the impedance...
Would the drop from 1M to 680k have caused any change in tone/high-end content/signal strength/gain ??
Does anybody know whether this is a mistake ?? Should I change it back to 1M or just stick with the 680k now its already soldered in??
However, he was reluctant to change the input grid 1M resistor to 680k as he says this lowers the input impedance of the preamp. I asked him to follow the mod sheet and swap the 1M for 680k anyway.
I'm wondering now if the 680k input resistor on the Bass shift mod is a mistake ... Pretty much every amp has a 1M resistor at the input, so I can't understand why somebody thought changing it to 680k as all it does is mess up the impedance...
Would the drop from 1M to 680k have caused any change in tone/high-end content/signal strength/gain ??
Does anybody know whether this is a mistake ?? Should I change it back to 1M or just stick with the 680k now its already soldered in??