This needle is compatible with the following models: Technics SL-Q210, SL-Q30, SL-Q300, SL-Q310, SL-7, SL-D21. Plugs into your tonearm. Output: 5MV +- 3DB Channel Balance below 1DB Channel Separation: 15DB+ Frequency response: 20K HZ Tracking force: 1.25 Grams