Pioneer QX – 747A receiver. Classic Vintage. Fully revitalized.
In 1937 Nozomu Matsumoto created the first magnetoelectric speaker in Japan, and a year later, in Tokyo, he registered the company under the name Fukuin Shokai Denki Seisakusho. In 1961, the company’s name was changed to Pioneer Electronic Corporation. However, the breakthrough came in 1962, when the company entered the Tokyo Stock Exchange and created the world’s first stereo system with speakers in separate housings. Four years later, Pioneer opened branches in the USA and in Europe. In 1978, the company created one of the best-known and most powerful receivers in its history SX-1980. Pioneer can also be proud of great successes in the world of auto-moto, as it introduced in 1975 the world’s first automotive stereo subassembly, then in 1984 a CD player and GPS navigation in 1990. The company also played a major role in the development of DVDs, plasma TVs and technologies Organic LED display (OLED). The company is currently part of Pioneer & Onkyo Corporation.
The QX-747A is an upgraded version of one of the flagship receivers offered by Pioneer in the mid-70s. It is a quadraphonic model characterized by an exceptionally beautiful and interesting design. The round, oscilloscope-like display showing the strength of the sound in all four channels is especially eye-catching.
The QX-747A owes its realism and clear sound localization mostly to the built-in CD-4 demodulator. The sound is selective, rich and even “fat”, and above all extremely pleasant to the ear.
The model has been given a brand new enclosure made of American cherry wood, which brings out its beautiful design characteristic of the 70s. The wood finishing is Chinese oil produced from natural oils and natural turpentine-based beeswax. Potentiometers are in perfect condition. Metal elements and back parts of the enclosure were cleaned and painted using the automotive wet painting technique. The device has been fully reviewed and serviced.
New green-blue illumination of the front panel.
Collector’s item. The device is in perfect condition.
– power – 4 x 40W at 4Ohm, 4 x 20W at 8Ohm, quadraphonic, stereo
– frequency response – 10Hz – 25kHz
– total harmonic distortion – 0.5%
– input sensitivity – 2.2 mV (MM), 140 mV (line)
– signal-to-noise ratio – 70dB (MM), 90dB (line)
– weight – 20 kg
– damping factor – 35
– output – 140 mV (line)
– impedance 4 – 16 Ohm
– dimensions – 55cm x 16cm x 37cm (width x height x depth)
– year of production: 1973/76
– made in Japan