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A panel of switches found on the back panel offers an array of cool options to apply to both channels of the EP2000 and EP4000. The Clip Limiter lets you get even more out of the amplifier without overdriving either it or your speaker system. Builtin circuitry automatically senses when the EP2000 or EP4000 is being overdriven into clipping and then momentarily reduces the input level to avoid clipping distortion. This all happens in a few thousandths of a second, so it s an inaudible way of avoiding audible clipping distortion. Of course, you can turn the Limiter off if you're feeling lucky.
Ultra low frequency sounds (infrasonics) are caused by rickety stage vibrations, mic thumps and wind noise. While technically inaudible, they can cause a huge drain on amp power, potential damage to your speakers and a sludgy sound in the audible bass ranges. Both EP models feature a defeatable Low Cut Filter that chops off unwanted frequencies below 50Hz or 30Hz (depending on your PA system s capabilities).
The same panel contains the switches that allow you to put these amps to work in either stereo or bridge (mono) mode. Both the EP2000 and EP4000 can be linked to additional power amps by switching into parallel mode.
There s plenty of awesome features on the outside of the EP2000 and EP4000, but there's also a team of cool components on the inside helping it work its magic. They come loaded with famously reliable Toshiba/Fairchild power transistors as well as a high current toroidal transformer for ultra high transient response and further reliability. Independent DC and thermal overload protection on each channel automatically protects the amplifier and speakers from any show stopping meltdowns. There's no need for fuses, giving you one fewer potential midgig headache.
The EP2000 and EP4000 have both XLR and 1/4" TRS inputs. Even the outputs are totally flexible, consisting of Speak on compatible outputs and five way binding posts. Whether you're dealing with bare wire or boutique audiophile cabling, the EP2000 and EP4000 are right at home.
The exhaust fan, visible on the back panel, is the final stage of an internal back to front cooling system that keeps these amps working in the mild temperatures they love, even through periods of extended use. Finally, an impact resistant, all steel 2U rack mount chassis helps these workhorses stand up to all the rigours of the road.