19ENGLISHCD player sectionLaser diode: GaAIAsDigital filter (D/A): 8 Times Over SamplingD/A converter: 24 BitSpecificationsSpindle speed: 500 rpm — 200 rpm (CLV)Wow & Flutter: Below Measurable LimitFrequency response (±1 dB): 20 Hz — 20 kHzTotal harmonic distortion (1 kHz): 0.01 %Signal-to-Noise ratio (1 kHz): 105 dBDynamic range: 90 dBMP3 decode: Compliant with MPEG-1/2 Audio Layer-3WMA decode: Compliant with Windows Media AudioKDC-4051UM only:AAC decode: AAC-LC “.m4a” filesUSB interfaceUSB standard: USB1.1/ 2.0 (Full speed)Maximum supply current: 500 mAFile system: FAT16/ 32MP3 decode: Compliant with MPEG-1/2 Audio Layer-3WMA decode: Compliant with Windows Media AudioKDC-4051UM only:AAC decode: AAC-LC “.m4a” filesAudio sectionMaximum output power: 50 W × 4KDC-U449/ KDC-U3049/ KDC-U349 only:Full bandwidth power (at less than 1 % THD):22 W × 4KDC-4051UM only:Output power (DIN 45324, +B = 14.4 V): 30 W × 4Speaker impedance: 4 Ω — 8 ΩTone action: Bass: 100 Hz ±8 dBMiddle: 1 kHz ±8 dBTreble: 10 kHz ±8 dBPreout level / load (CD): 2 000 mV/10 kΩPreout impedance: ≤ 600 ΩAuxiliary input sectionFrequency response (±3 dB): 20 Hz — 20 kHzInput maximum voltage: 1 200 mVInput impedance: 10 kΩGeneralOperating voltage (11 V — 16 V allowable): 14.4 VMaximum current consumption: 10 AInstallation size (W × H × D):182 mm × 53 mm × 158 mmWeight: 1.3 kgSubject to change without notice.KDC-U449/ KDC-U3049/ KDC-U349 only:FM tuner sectionFrequency range:200 kHz space: 87.9 MHz — 107.9 MHz50 kHz space: 87.5 MHz — 108.0 MHzUsable sensitivity (S/N= 26 dB):11.2 dBf (1.0 μV/75 Ω)Quieting sensitivity (DIN S/N = 46 dB):19.2 dBf (2.5 μV/75 Ω)Frequency response (±3 dB): 30 Hz — 15 kHzSignal-to-Noise ratio (MONO): 63 dBStereo separation (1 kHz): 40 dBAM tuner sectionFrequency range:Band 1 (MW):10 kHz space: 530 kHz — 1 700 kHz9 kHz space: 531 kHz — 1 611 kHzBand 2 (SW1): 5 kHz space: 2 940 kHz — 7 735 kHzBand 3 (SW2):5 kHz space: 9 500 kHz — 10 135 kHz /11 580 kHz — 18 135 kHzUsable sensitivity (S/N= 20 dB):MW: 31 dBμ (36 μV) / SW: 32 dBμ (40 μV)KDC-4051UM only:FM tuner sectionFrequency range (50 kHz space): 87.5 MHz — 108.0 MHzUsable sensitivity (S/N = 26 dB): 1.0 μV/75 ΩQuieting sensitivity (DIN S/N = 46 dB):2.5 μV/75 ΩFrequency response (±3 dB): 30 Hz — 15 kHzSignal-to-Noise ratio (MONO): 63 dBStereo separation (1 kHz): 40 dBMW tuner sectionFrequency range (9 kHz space): 531 kHz — 1 611 kHzUsable sensitivity (S/N = 20 dB): 36 μVLW tuner sectionFrequency range: 153 kHz — 279 kHzUsable sensitivity (S/N = 20 dB): 57 μV