• Country
• United States of America (USA)

• Manufacturer / Brand
• Royal Sound Co., Inc. (Roadmaster); Eatontown, NJ

• Year
• 1980 ??

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 263885

Click on the schematic thumbnail to request the schematic as a free document.

• Number of Transistors
• Semiconductors present.

• Semiconductors

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Storage Battery for all (e.g. for car radios and amateur radios) / 12 Volt

• Loudspeaker
• - This model requires external speaker(s).

• Material
• Metal case

• from Radiomuseum.org
• Model: Roadmaster EA400N - Royal Sound Co., Inc.

• Notes

• 5 band 100 watt car equalizer/amp with fader & LED power indicator.

• Author
• Model page created by a member from A. See "Data change" for further contributors.

• Other Models

• Here you find 4 models, 4 with images and 0 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Royal Sound Co., Inc. (Roadmaster); Eatontown, NJ