Elysia nvelope 19", Stereo Impulse Shaper, Discrete Class-A Topology, Full Range Mode, Dual Band Mode, EQ Mode, Mixed Mode, Dual Mono/Stereo Link, Auto Gain, Stepped Potentiometers, Frequency Response: < 10 Hz - 400 kHz (-3.0 dB), Noise Floor A-weighted Full Range: 20 Hz - 20 kHz -90 dBu, Noise Floor A-weighted Dual Band: 20 Hz - 20 kHz -87 dBu, Dynamic Range: 20 Hz - 22 kHz 112 dB, Maximum Input/Output Level: +21 dBu, Input Impedance: 10 kOhm,, Output Impedance: 68k Ohms, Made in Germany, Solid, leight weight aluminum housing, XLR and Jack in-/outputs, Dimensions: 19" 1U,, Weight: 2kg