Empower - Makes home theater AC power conditioners. USA. - http://www.empowerac.com/
NC - Never Connected - Power supply for high-end audio systems and equipment. Showcases information on OEM and upgrade options. - http://www.never-connected.com/
Furman Sound - Manufacturer and distributor of audio and video signal processors and AC power conditioning components. USA. - http://www.furmansound.com/
ExactPower - Manufacturer of voltage regulators. - http://www.exactpower.com/
Chang Lightspeed - Ohio-based power conditioner maker. - http://www.changlightspeed.com
Balanced Power Technologies - Manufacturer of audiophile grade power conditioners for home audio and home theater systems. Utilizing a design that reduces audio and video noise within one's system. - http://www.b-p-t.com
Audio Power Industries - Manufacturer of power conditioner. - http://www.audiopower.com/