Compact Designed Equalized Line Amplifier gives frequency response of +/- 1.0dBfrom 30 Hz to 15 KHz. The Equalized Line Amplifier requires AC 230 V to operate efficiently at a frequency rate of 50 Hz. The Equalized Line Amplifier is offered in a compact design that facilitates ease of installation. Compact Designed Equalized Line Amplifier is offered in a 19 inches rack mounting version.