Sony M4
Sony
Japan
Tape Deck Details
Number of Motors
1
Number of Heads
2
Head Configuration
Full-track-mono
Wow & Flutter
Signal-to-Noise [dB]
Dimensions [mm]
Weight [kg]
Year built
Head Composition
Permalloy
Equalization
NAB
Frequency Response
Speed
3¾, 7½
Max Reel [inch]
5
Tracks
1/2 Rec/PB
Price
Additional Information
The Sony M-4 reel-to-reel tape deck, produced by Tokyo Telecommunications (early Sony), is a vintage tube-based consumer mono/stereo recorder from the mid-20th century.
Key Specifications
Tracks: 1/2-track record/playback (mono full-track to half-track stereo capability)
Speeds: 3¾ ips and 7½ ips
Max Reel Size: 5 inches
Heads: 2 heads (permalloy composition, full-track-mono configuration)
Motors: 1 motor
Equalization: NAB
Power: 100V (Japan domestic)
Outputs: ¼-inch headphone jack
Electronics: Tube amplification
Rated for moderate sound quality (4/10) and long-term reliability (5/10), the M-4 emphasizes basic functionality for home or semi-professional use in an era of emerging reel-to-reel technology.