Features:

Rockville RX230 is a rack-mountable, 2-channel stereo / 3-channel mono crossover.
The ability to blend the output of two channels
Filtering at 24 dB/octave
Mute buttons
The transition from low to high frequencies: x10 from 100 Hz to 1 kHz: Alters the frequency range from very low to very high, from 100 hertz to 1 kilohertz.
Two-channel stereo and three-channel mono modes are selectable.
Turn off the bass
Alterable X-Over Frequency for Subwoofers (30 Hz - 200 Hz)
Gain range for subwoofer: 6 to +6 dB

Specifications:

Each output is -3 dB at the selected crossover frequency value. Outputs are essentially flat within their relative passbands.
Distortion: Less than 0.02% THD @ +4 dBu,@ 1 kHz
Hum and Noise: Crossover controls set @ 1 kHz, all level controls set at 0 dB; 22 Hz to 22 kHz, unweighted gain @ 0dB(ref +4dBu) - 90dB
Low Frequency Output: -86 dBu below 80 dB
High Frequency Output: -84 dBu below -78 dB
Maximum Input Level: +14 dBu, (channel gain @ 0 dB input level controls set at 0 dB) +22 dBu
Maximum Output Level: +22 dBu, unbalanced +28 dBu, balanced
Input Impedance: 10k ohms unbalanced
Dimensions: 19 x 4.85 x 1.8 inches
Gross weight: 4.18 Lbs
Connectors:
Inputs: XLR Balanced
Outputs: XLR Balanced
Power Requirements: 120V AC, 50/60 Hz, 20 watts
110-120V voltage
Warranty: 1 year audio saving
Channel Gain Control: 0 to +12 dB
Low Frequency Level Control: -8 to +6 dB
High Frequency Level Control: -8 to +6 dB