F2-way stereo or 3-way mono crossover. Full scale frequency selection between 45 to 9600Hz. 24dB/oct. Linkwitz – Riley filters. All inputs and outputs are balanced or unbalanced with XLR connections. Subsonic filter (40Hz) with ON/OFF switch. Gain control on all inputs and outputs. Phase inverter switch. XO 2.4: Stylish black design with blue and white LEDs. EC-102: Silver design.