Pioneer is a Japanese company that designs and manufactures electronic products.

Pioneer

The Pioneer C-90 is a stereo control amplifier developed in 1986, featuring a design philosophy centered around simplicity and performance. It employs a twin monoconstruction structure supported by a three-transformer multi-power supply. Each power supply for the left and right channels operates independently, which minimizes interference. The layout of the printed circuit board is organized into blocks to enhance stability and separation. Additionally, the video circuit includes an innovative automatic shut-off feature linked to the function switch when an audio source is active. To combat vibrations, the amplifier incorporates polycarbonate insulators, rubber vibration isolators, and a copper plate designed to absorb microvibrations and prevent magnetic distortion. The unit also utilizes carefully selected relays and switches to ensure a clean signal path. A hybrid MC transformer system enhances audio quality by reducing DC resistance and stray capacitance. The mechanical volume control, operated by a clutch-type motor, allows for precise adjustments even during manual operation. Furthermore, it includes a video enhancer for sharpness, detail control, and noise reduction, and features Rec Monitor Out for recording purposes. Overall, the C-90 showcases advanced engineering and attention to detail in its construction and functionality.

C-90

by Pioneer

Start a thread

Interesting articles

100 Years of Audio Excellence: Luxman Marks the Milestone with LECUA-EX Technology

The Hidden World of Vinyl Pressings

Fundamental Concepts: Sound Waves, Frequency, Amplitude