1 kHz reference check
Audio-Technica AT-OC9XML
Rega P3 · RB330 · Audio Research SP20
- Playback speed
- 33.34 RPM
- Speed error
- +0.02%
- DIN-shaped W&F
- 0.030%
- Separation
- 31.8 dB
Strong in-system channel separation and near-nominal playback speed, with four independently switchable L/R rotation-fingerprint views.
Measurement details
- Tonearm
- Rega RB330
- Preamplifier
- Audio Research SP20
- Input interface
- EVO4 (report label)
- Tracking force
- 2 g
- Turntable support
- Wall shelf
- Channel balance
- −0.24 dB
- THD, left / right
- 0.29% / 0.37%
Overhang was checked and confirmed correctly aligned. The left-channel third harmonic varied most during recording; a repeat capture can establish whether the pattern returns.