I agree. I have used this RM-4 with Orthofon SPU Royal N for two years. I loved the sound coming out of that system. And it was quite robust too. Now switched to another turntable (Pro-ject RPM 5). And it came with Sumiko Blue Point V2 pre-installed. Orthofon is low output voltage cartridge. While Sumiko Blue Point is rather high = 2.5V.
I am not a pro in electronics. I just want this thing to play a music I like. All I have so far as barely audible signal coming out of my headphones at full headphone amplifier volume to which RM-4 connected to.... Once again, if anyone knows where to locate the switches or anything that can be used to adjust the output level of RM-4 I would greatly appreciate it. thanks!