I have tried AMRG carbon films 3 times---as the cathode resistor in my linestage and as dropping resistors in my power amps' bias supply. Each time the ARMG was heavy in the bass and very dark and soft in the highs. In each case, I ended up replacing the AMRG with an AN tantalum 2w which solved the coloration problem.
I have heard the AMRG is billed as better sounding than the Riken carbon film. I haven't compared them in an A/B test, but they certainly sound similar. For some reason, Rikens seem to do very well as gridstoppers which is how I use them, but in my opinion they are too colored in other spots.
I have heard the AMRG is billed as better sounding than the Riken carbon film. I haven't compared them in an A/B test, but they certainly sound similar. For some reason, Rikens seem to do very well as gridstoppers which is how I use them, but in my opinion they are too colored in other spots.