Having said that, they were all of the same basic design and layout, and easily recognisable by way of the Stylophone logo in the upper right hand corner of the 6" x 4" x 1.5" (approx.) body.
All were driven by a single 9v PP3 type battery, fitted inside the unit by removing the large rear cover, exposing the underside of the whole circuit board and it's components*.
* There was an exception to this design, which will be discussed later.
The basics are here that you will see on any Stylophone:
The stylus fits nice and snug into its' resting position, with its' thin white wire folded neatly underneath. (If it is not folded correctly, the stylus will keep popping out).
The rear of the instrument casing houses a tuning device, which protrudes through a recessed hole in the casing, allowing the pitch to be adjusted if playing along with another instrument.
This does the job very well indeed, with any variation in tone usually due to a dying battery, or more often than not - a dirty keyboard, and/or stylus.
The actual 'making' of a note is made by simply applying the stylus tip to the 'keyboard'. This contact completes the circuit, and plays the note of the segment touched by the stylus.
Circuit board & Components
A small group of Stylophones including the 350S model, and Dubreq amplifier.
And its' that simplicity - born out of great design in the first place - that makes the Stylophone such a smashing little gizmo.
a common problem!
There were plain white ones, black and white ones, wood effect ones, wood effect with volume controls, plain keyboards, keyboards with spacers, and that's even before the actual circuits are considered!.
Instantly recognisable by the keyboard, the stylophone came in many guises through the years, from the late 60's up until the mid 70's.....