I have a Technics SL1210 turntable, Nagaoka MP-110 and a Pioneer DJM 400 mixer/amp, focusrite scarlett soundcard
When recording a vinyl I noticed something odd in the spectrograph (Spek) which I use to ensure the recording is truly 96kHz shows that the signal from the DJM400 seems to peak at 38kHz
I pulled out a rip I had done months earlier using the same setup but instead of the DJM400 I had a numark DJ mixer.
Direct from SL1210 into Focusrite (RIAA curve applied in audacity and amplified 38db):
To me it seems the pioneer phono stage is so bad it is not hitting the signal that I was getting with the numark mixer.
I was going to buy this to temp solve the issue until I can buy a new mixer that I can trust:Pro-Ject Phono Box MM Amplifier - Black: Amazon.co.uk: Electronics