• Country
• United States of America (USA)

• Manufacturer / Brand
• Precise Development Corp.; Oceanside, Mineola, NY

• Year
• 1955 ??

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 325125

• Number of Tubes
• 4

• Valves / Tubes
• 12AX7 6AB4 6AU6 6X4

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Power type and voltage
• Alternating Current supply (AC) / 110 Volt

• Loudspeaker
• - For headphones or amp.

• Material
• Metal case

• from Radiomuseum.org
• Model: Ultra Preamplifier - Precise Development Corp.;

• Shape
• Tablemodel without push buttons, Mantel/Midget/Compact up to 14

• Dimensions (WHD)
• 12 x 4 x 4 inch / 305 x 102 x 102 mm

• Notes

• 1950's Era Tube Preamplifier with its own power supply.

• Author
• Model page created by Lorie Mouklas. See "Data change" for further contributors.

• Other Models

• Here you find 46 models, 45 with images and 14 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Precise Development Corp.; Oceanside, Mineola, NY