chasda, I won't contradict any of the above posts, but in my experience vdH cartridges come in wood boxes. Inside the box, on the underside of the removable cover, you will usually find hand-written specs for that particular cartridge. Those data are what I would use for a reference, not whatever anyone else here got off the internet. What you want to look for is "cartridge output" and "compliance". Output will be stated in millivolts (mV) in relation to a stylus velocity. Since stylus velocity is standardized at either 3.54cm/sec or 5.0cm/sec, we can disregard the velocity for now. Just tell us what is the output in mV. Likewise, what is the compliance in terms only of the numbers given? The cartridge output gives you a guide to know how much phono stage gain you need. The compliance will help to optimize tonearm matching. You will get more help here if you provide that information.