You may find that the Zero Autoformer useful with low impedence speakers. The "Zero's" multiply the speakers' impedence allowing an easier load for your amp. I use them very successfully with Audio Research tube amps and Soundlabs. The designer recommends caution when using the Zero's with certain SS amps with excess offset voltage (details are in the literature) Check out the website for more information: www.ZEROimpedence.com.
