Benz Micro M2 loading


What are people using to load their Benz M2s? On my Pass Labs XOno I've tried 47 kOhm (too bright), 1000 Ohms (not right), and 5 Ohms (no). Right now I'm on 475 Ohms. Any feedback is appreciated.
jandrese9882
I was once advised that loading a cart at about 9 times the cart's output impedance is a good starting point... so for the M2 with 24 ohm output impedance, that makes the loading just a hair under 220 ohms.

I own a Benz Ace Medium with the same .8mV output and 24 ohm output impedance, and I'm presently loading it at 220 ohms. I have also used 380 ohms (using some home made loading plugs).

You might try a little lower than 475 ohms and see what you think.
"The better the cart. the lower the loading."

I don't know where you heard that but it is definitely not true. Loading has to do with electrical resonance damping and cannot be systematically approached even on the basis of impedance matching. Some designers would even say the opposite in that if the cartridge needs to be electrically damped it isn't designed properly. Of course, that's one extreme opinion. Your new Goldfinger is a high output, high impedance design that will not do well with a low load impedance.

Jandrese9882,

What was "not right" about 1k? That or there abouts ought to work.
I've also heard 25 times, which puts it at about 600, but neither are necessarily
so. Where did you get the 24 ohm spec? I thought it was higher.
06-23-08: Piedpiper
I've also heard 25 times which puts it at about 600, but neither are necessarily so.
Yes, I've heard that, too.

I'm using 220ohm loading of the Heed Quasar (presently auditioning), and it sounds better to me than the 470 ohm option with the Benz Micro Ace Medium (.8mV) cart. Top end energy is more balanced and less aggressive.