• Country
• United States of America (USA)

• Manufacturer / Brand
• Fender Electric Instrument Co.; Fullerton (CA)

• Year
• 1993–2010

• Category
• Audio Amplifier or -mixer

• Radiomuseum.org ID
• 206346

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

• Number of Tubes
• 4

• Valves / Tubes
• 12AX7A 12AX7A 6BQ5 6BQ5

• Number of Transistors

• Semiconductors
• Tr.Gl.=Metal-rectif.

• Main principle
• Audio-Amplification

• Wave bands
• - without

• Details
• Guitar Amplifier

• Power type and voltage
• Alternating Current supply (AC) / 100 Volt

• Loudspeaker
• Permanent Magnet Dynamic (PDyn) Loudspeaker (moving coil) / Ø 8 inch = 20.3 cm

• Power out
• 15 W (unknown quality)

• Material
• Leather / canvas / plastic - over other material

• from Radiomuseum.org
• Model: Pro-Junior PR 257 - Fender Electric Instrument Co.

• Shape
• Console with any shape - in general

• Dimensions (WHD)
• 15.5 x 14.5 x 8.75 inch / 394 x 368 x 222 mm

• Notes
• Electric guitar amplifier; chrome top facing, controls numbered 1 - 12; Eminence speaker. Different cabinet finishes. Export models have transformer 048713 for 100 / 230 V mains.

• Net weight (2.2 lb = 1 kg)
• 20 lb 0 oz (20 lb) / 9.080 kg

• Source of data
• -- Schematic

• Author
• Model page created by Salvatore Baldi † 2017. See "Data change" for further contributors.

• Other Models

• Here you find 40 models, 16 with images and 32 with schematics for wireless sets etc. In French: TSF for Télégraphie sans fil.
  All listed radios etc. from Fender Electric Instrument Co.; Fullerton (CA)