SP2XS Manual Errata pg. 2-2 "Connecting to Your Audio System" Correction: the SP2XS has 2 unbalanced RCA line outs NOT balanced 1/4" TRS. pg. A-2 "Audio Specifications" Correction: Amplifier 2x 20 watts RMS. Speakers Stereo, 3x5 inches, 4 ohms, full range with whizzer cone. Tuned, ducted-port enclosures. Useful system frequency range is 80Hz-15KHz. Headphones Output impedance is 47 ohms nominal. Rated load impedance is 100 ohms. Maximum output level is 1.0 Volts RMS into 100 ohms, Line Outputs Unbalanced RCA female connectors. Output impedance is 100 ohms or less. Maximum output level is 1.1 Volts, RMS. Frequency Response is 30Hz - 20KHz +/- 1dB. S/N ratio is 90dB or greater. Line Inputs Unbalanced RCA female connectors. Input impedance is 10K ohms. Input level for rated power is 1.3 Volts, RMS. Note: Volume control does not affect Line In volume.