Proton AD-300
Dolby B NR Dolby C logo Full Logic Metal Tape

The Proton AD-300 is a auto-reverse stereo cassette deck with Dolby B and C noise reduction, it was introduced by Proton in 1987 and discontinued 3 years later in 1990.

The main features of the Proton AD-300 are: 2 heads, analog 3 digit tape counter and memory stop, automatic tape type selection with support for normal, chrome and metal tapes.

Typical front loading cassette deck with the cassette compartiment located on the left side of the deck. Tape eject is operated mechanically and the cassette needs to be placed with the side to be played facing forward in the cassette well.

Level meters used on the AD-300 are generic digital peak reading meters. Full-logic transport controls used on the AD-300 let it respond to the slightest finger contact for fast and effortless transport function selection.

Dolby C-type used in the AD-300 provides 20 dB of noise reduction above about 1,000 Hz, fully doubling the amount given by B-type. To further maintain recording accuracy, the AD-300 incorporates a switchable multiplex filter. When you record FM stereo broadcasts, the MPX filter of the AD-300 can be swiched on to prevent the standard 19kHz FM pilot signal from interfering with the noise reduction system.

For undisturbed listening a jack connector for a pair of stereo headphones is supplied.

Compact Cassette
  • Auto Reverse

Historic events

1987 Sony launched DAT (Digital Audio Tape) as a new audio tape standard
1988 Microsoft releases Windows 2.1.
1989 Tim Berners-Lee and Robert Cailliau built the prototype systemwhich became the World Wide Web at CERN.
1990 Dolby S Noise Reduction introduced by Dolby Laboratories.

Features of Proton AD-300

Connectors
Connectivity
Headphones
Controls
Controls
3-Position Direction Selector
Display
Display
3-Digıt Mechanical Counter Digital Peak-Reading Meters
Electronics
Electronics
Record Protection
Cassette Exterior
Exterior
Orientation Left Black Finish Front Loading
Compact Cassette
General
Stereo
Head
Head Configuration
2 Head Desiǥn 4 Track / 2 Channel
HighCom NR
Noise Reduction
Dolby-B Noise Reduction MPX Filter Dolby-C Noise Reduction
Controls
Operation
Full Logic Transport Control Timer Recording/Playback Memory Stop Memory Play
Power
Power Requirements
Alternating Current
Preamplifier
Preamplifier
Individual Input Level Controls
Tape Speed
Speed
1⅞ ips - 4.76 cm/s
Tape
Tape
Automatic Tape Type Selection Normal Tape Capabılity Chrome Tape Capabılity Metal Tape Capabılity
Transport
Transport
Auto Reverse Auto Shutoff Mechanical Tape Loading

Similar to Proton AD-300 from the period 1987 - 1990