How to increase the gain on a preamp

Use MM cartridge instead. It's way cheaper than SUT.

Agree with Onhwy61 and Jmcgrogan2. It sounds like you may not have enough gain in your MC stage to properly amplify the signal from your cartridge, but we'd need to know how much gain you have in the phono stage and the output of the cartridge. An SUT (which I have used in the past and found very effective, but a bit pricey) or a higher output cartridge may be in order.

What Onhwy61 said.

Details will help here. How much gain does the phono stage have? What is the output of your MC (not clear if it is HOMC or LOMC from your post)? Do you have this gain problem with any non-phono input?

You could also buy an external phono stage that can provide the gain you need if you don't want to cahnge carts or get into SUTs.

Dear Marcell728: You have to contact the manufacturer or use a higher output cartridge.

Regards and enjnoy the music,
R.