Benz recommends >1000 (>1k) for their 2.5mv HO carts... go to: musical surroundings dot com, for specs. I also have a 2.5mv HO Benz... My lowish 50db gain Conrad Johnson EV-1 Phono pre, allows me to load at 9.6k... 47k is the ideal, but a little to aggressive for my 2.5mv benz... Just use your ears... 47k might sound right to you, but anything below 1K will suck for sure.
