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Pioneer QX-4000



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Brand: Pioneer

The Pioneer QX-4000 is a high-performance amplifier designed for audiophiles who demand exceptional sound quality. It is part of Pioneer's Quartet series, which is known for its rich, detailed, and dynamic audio output.The QX-4000 uses advanced technology, such as Pure Direct mode, to eliminate unnecessary noise and enhance sound clarity. This mode disables extraneous AC circuitry to reduce noise interference and provide cleaner, more lifelike audio.The amplifier features a high-current MOSFET power supply, which provides stable and reliable power to the speaker connectors, ensuring accurate and detailed sound reproduction. It also includes digital-to-analog converters (DACs) that support high-resolution audio files, providing crystal-clear audio even at high volumes.The QX-4000's compact design, elegantly crafted casing, and slim-line remote control add to its versatility and ease of use. Additionally, balance control, loudness contours, and variable bass management allow users to adjust the sound to their personal preferences.Overall, the Pioneer QX-4000 is an elite amplifier that delivers exceptional sound quality and rich detail, making it an attractive choice for discerning audio enthusiasts.



  • Tuning range: FM, MW
  • Power Output: 10W into 8Ω (quad)
  • Frequency Response: 10Hz to 100kHz
  • Distortion: 1%
  • Damping Factor: 40
  • Speaker Impedance: 8Ω (minimum)
  • Input Sensitivity: 2.3mV (mm), 180mV (line)
  • Signal to Noise Ratio:
  • Line Output: 200mV (line), 35mV (din)
  • Dimensions:
  • Weight:
  • Year: 1974
  • Price: USD $349 (1974)

Pioneer QX-4000

Pioneer QX-4000

Pioneer QX-4000

Pioneer QX-4000

Pioneer QX-4000

Pioneer QX-4000

Pioneer QX-4000

Pioneer QX-4000



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