- 70 Volt expander- Expands a 25/70/100 Volt system without straining the existing amplifier- Easily connects to the amplifier output or anywhere on the 25/70/100 Volt line- No costly amplifiers or heavy gauge cablerequired- Endless expansion using Valcom speakers/horns- Output Impedance: 8 ohm- Weight: 1.1lbs- Dimensions: 4.44"H x 2.75"W x 2.88"D- VALCOM POWER UNITS (0)VCV1095