Professional "Woodie"

The early Fender guitar amplifiers, including the Princeton, Model 26 Deluxe, and Professional, marked a significant evolution in Fender's amplifier design and construction. Introduced in the spring of 1946, these models represented a notable improvement over their predecessors from the K&F era.

Design and Construction
The trio of amplifiers were built with elegant hardwood cabinets, which later inspired the nickname "Woodie" among collectors. These cabinets came in three finishes:

• Gleaming blonde maple
• Black walnut
• Dark mahogany

The amplifiers featured plush grille cloths in red, blue, and yellow/gold, with matching material on the rear lower back panel. A distinctive design element was the three metal strips running vertically over the speaker opening, adding a touch of "flash and brilliance" to their appearance.

All three models had a wooden handle on top and the upper-tier models, the Deluxe and Professional, had rear-facing control panels with black pointer-style control knobs and stenciled graphics, including a new logo reading "Fender Electric Instrument Co., Fullerton, California" accompanied by the K&F lightning bolt from the year before.

Professional​ Model Specifications

The Professional was the largest and most powerful of the three:

• 25-watt output
• Single Jensen 15" field-coil speaker
• Six tubes and the most intricate circuitry of the three models
• Instrument and microphone volume controls
• "Backwards" tone control provides full treble when turned counterclockwise
• ​The circuit was based on a Western Electric design but modified and improved by Leo Fender.

Fender seems to have built substantially more Deluxe Woodie models than the other two Woodie amps, whereas Woodie Princetons and Professionals are now much rare and, accordingly, expensive.

In questo link sono elencati 50 modelli, di cui 25 con immagini e 34 con schemi.
Elenco delle radio e altri apparecchi della Fender Electric Instrument Co.; Fullerton (CA)