Niles VCS100R

With these impedance-magnifying stereo volume controls from Niles, you can safely connect as many as 8 pairs of speakers to a typical receiver or amplifier without installing a speaker selector or any other type of protection device. If your amp's minimum impedance is 8 ohms, you can connect up to 8 pairs of 8-ohm speakers using these volume controls. If your amp's minimum impedance is 4 ohms, you can connect up to 16 pairs of 8 ohms speakers, or 8 pairs of 4 ohm speakers! Details: