| Model ID | SX-780/KU |
| Form Factor | Standard Width |
| Signal Path | Analog Hardware |
| Dimensions | 47.8 × 14 × 32 cm (W × H × D) |
| Weight | 24.7lbs |
| Power | 120VAC, 60Hz 150W (UL) |
| Frequency Response | 5Hz-80kHz +0dB, -1dB |
| Power Output (20Hz-20kHz, 8/4Ω) | 45W/45W |
| THD (Rated Output, 8Ω) | ≤0.05% |
| THD (Rated Output, 4Ω) | ≤0.08% |
| THD (23W, 8Ω) | ≤0.03% |
| THD (1W, 8Ω) | ≤0.03% |
| IMD (Rated Output, 8Ω, 50Hz:7kHz) | ≤0.05% |
| IMD (23W, 8Ω, 50Hz:7kHz) | ≤0.03% |
| IMD (1W, 8Ω, 50Hz:7kHz) | ≤0.03% |
| Damping Factor (20Hz-20kHz, 8Ω) | 30 |
| Input Sensitivity (Phono) | 2.5mV |
| Input Impedance (Phono) | 50kΩ |
| Phono Overload Level (1kHz, THD 0.05%) | 200mV |
| Input Sensitivity (Aux) | 150mV |
| Input Impedance (Aux) | 50kΩ |
| Input Sensitivity (Tape Play 1,2) | 150mV |
| Input Impedance (Tape Play 1,2) | 50kΩ |
| Output Level (Tape 1,2) | 150mV |
| Frequency Response (RIAA EQ) | 20Hz-20kHz ±0.2dB |
| SNR (Phono, IHF, Short-Circuited, A network) | 76dB |
| SNR (Aux, Tape, IHF, Short-Circuited, A network) | 95dB |
| FM Sensitivity (Mono) | 10.3dBf (1.7μV) |
| FM Sensitivity (Mono, 50dB Quieting) | 16.2dBf (3.6μV) |
| FM Sensitivity (Stereo, 50dB Quieting) | 37.0dBf (39μV) |
| FM SNR (65dBf, Mono) | 80dB |
| FM SNR (65dBf, Stereo) | 72dB |
| FM Distortion (65dBf, 100Hz, Mono) | 0.07% |
| FM Distortion (65dBf, 100Hz, Stereo) | 0.15% |
| FM Distortion (65dBf, 1kHz, Mono) | 0.07% |
| FM Distortion (65dBf, 1kHz, Stereo) | 0.15% |
| FM Distortion (65dBf, 6kHz, Mono) | 0.12% |
| FM Distortion (65dBf, 6kHz, Stereo) | 0.25% |
| FM Capture Ratio | 1.0dB |
| FM Alternate Channel Selectivity | 75dB |
| FM Spurious Response Ratio | 65dB |
| FM Image Response Ratio | 65d |
| FM IF Response Ratio | 90dB |
| FM AM Suppression Ratio | 50dB |
| FM Muting Threshold | 19.2dBf (5μV) |
| FM Stereo Separation (1kHz) | 45dB |
| FM Stereo Separation (30Hz-15kHz) | 35dB |
| FM Subcarrier Production Ratio | 55dB |
| FM SCA Rejection Ratio | 65dB |
| Frequency Response (FM) | 30Hz-15kHz +0.2dB, -0.8dB |
| Input Impedance (Antenna, Balanced) | 300Ω |
| Input Impedance (Antenna, Unbalanced) | 75Ω |
| AM Sensitivity (IHF, Ferrite Antenna) | 300μV/m |
| AM Sensitivity (IHF, External Antenna) | 15μV |
| AM Selectivity | 26dB |
| AM SNR | 50dB |
| AM Image Response Ratio | 40dB |
| AM IF Response Ratio | 40dB |
| Links | Classic Receivers |
| Notes | U.S.A. specific model. |
