Tucker: Well, the body as such only contains the magnet (as well as the contact pins for the needle) - and whether it's low or high output entirely depends on what needle you've got or which one you'd buy: a 3100 family needle would make it low output, a 3200 high output. However, whether it's worth a new needle would also depend on what turntable/tonearm you'd like to mount it on (and whether you might have more carts, one of which might be both better in general and better suited, of course...).
Well, and as for the Sansui: Iirc, the BA-3000 is a power-amp, and a pretty good one at that. Nevertheless, it's "just" a power-amp, so plugging a turntable directly into that is rather senseless, regardless of whether it's got a low or high output cartridge - as the gain would be too low in any case, and there also would be no RIAA (re-)equalisation. Shall mean: You'll need at least a separate phono stage (preferably with output level control) or a complete, full-featured pre-amp (like the matching CA-3000) in between in order to sufficiently amplify the low level phono signal and apply the RIAA (re-)equalisation (for an even frequency response - otherwise the bass would be pretty much drowned out, while the treble would be quite significantly boosted).
Really nice power-amp, though - at least if I've got the right one in mind: the "smaller" one of Sansui's Definition Series from around the mid-70s - a black monster with two big VU meters, weighing some 22 kg?
Greetings from Munich!
Manfred / lini