Check the listing for details. Samson E30, 2/3 Octave Stereo 15 Band Graphic Equalizer, Rack Mounting. Color: Black, Condition: Used. Listed at 54.00 USD. The Samson E30 is a professional 2/3 octave stereo 15 band graphic equalizer designed for rack mounting. With both TRS and XLR input/output ports, this analog equalizer offers precision control for adjusting sound levels in a studio or live setting. The sleek black color and compact 1U rack unit height make it a versatile and convenient addition to any audio setup. The Graphic Equalization feature ensures optimal sound quality by providing detailed frequency response adjustments, making it a reliable choice for musicians, sound engineers, and producers seeking precise audio processing capabilities. Missing one tiny slider cover that doesn’t affect function. Otherwise works and is ready to go! Power cord included