Dual 10 band graphic equalizers with individual LED indicators * Direct / equalizer function - High / low function * Continuous demo mode with digital graphic spectrum * Inputs: RCA (4 audio sources) / outputs: RCA (2 lines) / Removable rack-mount brackets * Frequency response: 32Hz-16kHz - tone control at 10kHz ±14dB - low distortion dynamic circuit - 110-220V switchable