PIONEER Private PRO-X1 (1988)

 

The digital straight concept, which focuses on the straightforward reproduction of the dynamics and transparent high quality of the original digital source, has reached a new high level with Private PRO-X1. This is the digital straight technology, which combines a digital output CD player with optical digital transmission system, and a digital amplifier with a built-in D/A converter. The digital signal from the CD is sent to the amplifier via optical fiber without being affected by electrical or external noise. As a result, the overwhelming dynamics and breathtaking transparency of the original digital source are reproduced in a straightforward manner. The 120W+120W integrated amplifier with built-in D/A converter boasts superb audio characteristics achieved through direct construction in pursuit of simple and straightforward circuitry. It also comes equipped with a CD/DAT direct circuit. Other high-quality features that can only be found on a PRO amplifier include a highly rigid honeycomb chassis (also used on decks and CD players) and gold-plated terminals (DAT output). The FM/AM/TV 3-band tuner features a luxurious DDD circuit for FM, an AM servo that also focuses on AM sound, and optimal microcomputer control. The twin recording/playback W reverse deck is equipped with twin Dolby HX Pro, which is a hot topic for recording digital sources. The speakers are 24cm 3-way speakers that emphasize deep bass reproduction, with a carbon cloth woofer and HE titanium domes for the midrange and tweeter. Motor-driven volume control for the amplifier. Auto program ED IT function for tape editing on the CD player, and a luxurious FL display with calendar display. The twin recording/playback W reverse decks are equipped with a quick reverse system and an electronic counter. There is also a timer for the 3-band tuner. This is truly a professional private PRO-X1. You can relax and enjoy its diverse high performance with the remote control.

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PIONEER SPEC-3 | SPEC-4 (1978)

 

The SPEC-3 professional stereo preamplifier is a exceptionally versatile pre-amplifier with 2 phono inputs, tuner, 2x AUX, 2x tape with duplicate, and an additional DIN connection. Designed specifically for record enthusiasts who enjoy recording to tape. You can choose between phono inputs and phono loads to optimally adjust your record playback. Tape duplicate (in both directions!) allows for easy editing of recordings. Also included are a low filter, a 32-step volume control, tone controls with selectable crossover frequencies, and a stereo/mono switch. Only 0.01% distortion over a range of 20 to 20,000 Hz (2 V output measured via phono). The SPEC-4 professional stereo power amplifier has an output power of 150 watts per channel into 8 channels from 20 to 20,000 Hz with only 0.01% distortion. Separate power supplies with two large transformers and two pairs of 22,000 uF electrolytic capacitors offer the same advantages as if two mono amplifiers were mounted into one chassis. This means considerable power reserves and optimal channel separation. The DC configuration and differential amplifier with a directly coupled output allow for a PIONEER frequency response of 5 to 100,000 Hz (-1 dB), a wide dynamic range, and guaranteed clean transient response. SPEC-4 specifications: Dimensions: 480 x 187 x 445 mm | Weight: 24,5 kg. Original sale price for SPEC-3 and SPEC-4: 3500 DM in Germany.

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PIONEER P-D70 (1983) | Sounds of The Future

 

Pioneer bring the miracle of LaserDisc™ technology to the new P-D70 Compact Disc player. Now, many of the revolutionary laser-optic and digital electronic techniques first developed for the sensational LaserDisc™ brand videodisc systems are yours to enjoy in the P-D70 Compact Disc player from 1983. Your favourite music is permanently stored in digital form on a pocket-sized disc enabling the total beauty and excitement of a live performance to be re-created in your home. Here's how Pioneer does it: 3-spot laser beam with three sophisticated servo systems. Focus parallel drive servo to improve sensitivity and quick search. High-quality audio-use components and a new LSI for better sound. Convenient search and random access put the fun in hi-fi. This is a second generation  CD player developed by taking advantage of optical technology cultivated in laser discs and the latest digital technology. It is equipped with Pioneer's in-house developed pickup utilizing the know-how accumulated in the development of optical video disc players. The pickup drive employs a focus parallel drive mechanism in which multiple magnetic circuits and multiple coils are placed in a straight line between objective lenses. This increases the sensitivity of the drive system and enables high-precision and high-speed search. The signal processing circuit is equipped with a newly developed LSI consisting of two chips, which greatly contributes to miniaturization and low power consumption, and realizes stable disk rotation control. The analog section is equipped with a newly developed 11th-order low-pass filter enclosed in a copper cap. High-performance parts such as high-sound resistance for high-wage audio equipment, polypropylene and mica capacitors, and 70 μ m copper foil printed circuit board are used. The display uses a pure digital signal display monitor with binary display and peak display. In binary mode, the change in the upper 12 bits of the 16-bit PCM signal read from the disk except for the sign bit is directly displayed. Since each bit has a weight of 6 dB, it is possible to see a signal level change of 72 dB (-54dB to + 18 dB). When the level meter switch is switched to the peak mode, a peak meter of 4 dB per dot is used for differential operation. The display range is -32dB to + 12 dB. Subcode output terminal (eventually never implemented) and wired remote control terminal are mounted at the back of the unit.

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