The 8 ohm tap will work OK, but you won't get the most efficient power transfer. And depending on the speaker, you may not get the best (flattest) frequency response.
Why don't you look for an earlier model amp, like Audio Research, Dynaco, or McIntosh. They all have 16 ohm taps.
Why don't you look for an earlier model amp, like Audio Research, Dynaco, or McIntosh. They all have 16 ohm taps.