Parameter: Power
Control Type: Toggle Switch
Range: On/Off
| Maker | Pioneer Brand |
| Function | |
| Additional Model ID | SX-1250/KU |
| Form Factor | Desktop |
| Signal Path | Analog Hardware |
| Made In | Japan |
| Date Produced | 1976-1977 |
| Dimensions (H × W × D) | |
| Weight | 64.25lbs |
| Power Source | 120VAC, 60Hz 650W (UL), 1200W (Max) |
| Frequency Response | 5Hz-100kHz +0dB, -1dB |
| Notes | USA market specific model. |
| Power Output (8/4Ω) | 160W/200W | |
| THD (Rated Output) | ≤0.1% | |
| THD (80W, 8Ω) | ≤0.05% | |
| THD (1W, 8Ω) | ≤0.07% | |
| IMD (Rated Output, 8Ω, 50Hz:7kHz) | ≤0.1% | |
| IMD (80W, 8Ω, 50Hz:7kHz) | ≤0.05% | |
| IMD (1W, 8Ω, 50Hz:7kHz) | ≤0.07% | |
| Input Sensitivity (Power Amp In) | 1V | |
| Input Impedance (Power Amp In) | 50kΩ | |
| Damping Factor (20Hz-20kHz, 8Ω) | 30 | |
| SNR (IHF, Short-Circuited, A Network) | 100dB | |
| Input Sensitivity (Phono 1, 2) | 2.5mV | |
| Input Impedance (Phono 1, 2) | 50kΩ | |
| Phono Overload Level (1kHz, THD 0.1%) | 500mV | |
| Input Sensitivity (Mic) | 6.5mV | |
| Input Impedance (Mic) | 50kΩ | |
| 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) | 150mV | |
| Output Level (Tape Rec 2, DIN Connector) | 30mV | |
| Output Impedance (Tape Rec 2, DIN Connector) | 80kΩ | |
| Output Level (Pre Out) | 1V | |
| Output Impedance (Pre Out) | 1kΩ | |
| THD (Pre Out, 20Hz-20kHz, 1V) | ≤0.02% | |
| Frequency Response (RIAA EQ) | 30Hz-20kHz ±0.2dB | |
| SNR (Phono, IHF, Short-Circuited, A network) | 75dB | |
| Frequency Response (Aux, Tape) | 10Hz-50kHz +0dB/-1dB | |
| SNR (Aux, Tape, IHF, Short-Circuited, A network) | 90dB | |
| FM Sensitivity (Mono) | 8.7dBf | 3.0μV/300Ω |
| FM Sensitivity (Mono, 50dB Quieting) | 11.5dBf | 4.1μV/300Ω |
| FM Sensitivity (Stereo) | 14.5dBf | 5.8μV/300Ω |
| FM Sensitivity (Stereo, 50dB Quieting) | 36.0dBf | 69μV/300Ω |
| FM Usable Sensitivity (IHF '58) | 1.5μV | |
| FM SNR (65dBf, Mono) | 80dB | |
| FM SNR (65dBf, Stereo) | 74dB | |
| FM Distortion (65dBf, 100Hz, Mono) | 0.1% | |
| FM Distortion (65dBf, 100Hz, Stereo) | 0.25% | |
| FM Distortion (65dBf, 1kHz, Mono) | 0.1% | |
| FM Distortion (65dBf, 1kHz, Stereo) | 0.2% | |
| FM Distortion (65dBf, 6kHz, Mono) | 0.3% | |
| FM Distortion (65dBf, 6kHz, Stereo) | 0.3% | |
| FM Capture Ratio | 1.0dB | |
| FM Alternate Channel Selectivity | 83dB | |
| FM Spurious Response Ratio | 110dB | |
| FM Image Response Ratio | 110dB | |
| FM IF Response Ratio | 120dB | |
| FM AM Suppression Ratio | 60dB | |
| FM Muting Threshold | 13dBf | 4.9μV/300Ω |
| FM Stereo Separation (1kHz) | 50dB | |
| FM Stereo Separation (35Hz-15kHz) | 35dB | |
| FM Subcarrier Product Ratio | 74dB | |
| FM SCA Rejection Ratio | 74dB | |
| Frequency Response (FM) | 30Hz-15kHz +0.3dB/-1.0dB | |
| 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 | 40dB | |
| AM SNR | 55dB | |
| AM Image Response Ratio | 65dB | |
| AM IF Response Ratio | 85dB |
| Radio Station | Display | AM/FM |
| Signal | Meter | |
| Tuning | Meter | |
| Speaker A | Indicator | |
| Speaker B | Indicator | |
| Speaker C | Indicator | |
| Stereo | Indicator | |
| AM | Indicator | |
| FM | Indicator | |
| Phono 1 | Indicator | |
| Phono 2 | Indicator | |
| Aux | Indicator |
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