The AEQ2199 from Knowles is a Gain Equalizer with Frequency DC to16 GHz, Gain Equalization 3.5 dB, Insertion Loss 3.0 dB, Impedance 50 Ohms, Operating Temperature -55 to 125 Degree C. Tags: Surface Mount, Positive Gain Slope. More details for AEQ2199 can be seen below.