AudioControl EQL 2-Channel 13-Band Octave Equalizer Level Matching Controls. 6 bands 1/2-octave wide (bass).
Center frequencies: 31.5, 45, 63, 90, 125, 180 Hz. 7 bands 1-octave wide (mids and highs).
Center frequencies: 250, 500, 1000, 2000, 4000, 8000, 16000 Hz. Input gain and output level controls and LEDs help with system integration. 33 Hz subsonic filter (adjustable with optional module). Frequency response: 10 to 20,000 Hz.
Maximum output level: 9.5 volts RMS. Dimensions: 9-7/8"W x 1-3/8"H x 8-1/8D. There will be two tracking numbers provided.