Riaa 1 or 2 will do.
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"Col" by the way stands for Columbia, and there was usually an "RCA" setting also. One preamp that I had, a Heathkit, had separate controls with multiple settings for "rolloff" and "turnover" frequencies (if I remember the terms correctly). These were for the HF attenuation and LF gain so that you could match whatever the recording company had used.
wow thats kind of neat. well im getting a turntable never been into records since i was a kid and that was on my mickey mouse record player so that doesn't count. so i assume that i should use the riaa for most records and if i stumble on a columbia record use the col setting and change the plugs. that is really kind of neat. he thanks.