Passive Preamp works with Dynavector p75?

Try running the P75 directly into the mc122 with no preamp at all. This will tell you what the highest volume level that you will get with a passive pre wide open will be. Adequate volume is only one of the considerations when going the passive pre route, but this would be a good start. Be careful that you don't overload the speakers, but with the Maggies' lowish sensitivity, I doubt you would have any problems. You will probably be surprised by the increase in clarity and refinement, but very possibly also disappointed with the lean and undynamic sound. Worth the experiment.

What is going to be important here is the input sensitivity and voltage gain of the MAC. My friend has the P75 going into a Sowter based TVC into a CJ MV60 SE. He is using a Dynavector cart, the 17D2 I think. This works great. However his speakers are GMA Europas which are more efficient than your MMGs too. I still say my first sentence in this post is going to be key for your success.

Shakey

It will probably work, but how well is the question. Input sensitivity of .8V is a good start, but the gain level has to be taken into consideration too. Also, input impedance on the amp is 10k ohms, not usually ideal for a passive preamp regardless of the source IMO (unless it is a buffered passive like the Pass B1).

>You will probably be surprised by the increase in clarity and refinement, but very possibly also disappointed with the lean and undynamic sound<

If he goes with a transformer or autoformer type passive he won't be disappointed. They don't have the issues with dynamics or leanness that you speak of.

Shakey

Thanks everyone. So may be I should connect the p75 directly to the Mac and see what happen. Now my question is: Are you sure it won't damage my speakers because the output volume is too high?