Fender Cabronita Telecaster and "Celebration"). This was the 60th anniversary of the Telecaster design, which was the original design by Leo Fender and the world's first successful, mass-produced, bolt-on neck guitar. As part of this, the American made "Cabronita" was created. Like the Custom Shop versions, these used TV Jones TV Classic pickups, but in a limited color pallet, and always with two pickups. The tone knob was deleted and in its place was a three way switch. This switch was a simple toggle design rather than a blade design, which was unusual for a Telecaster. These models were only manufactured for a
Guitar amplifier controls were simple, mainly providing treble adjustment. The limited controls, the early loudspeakers, and the low amplifier power (typically 15 watts or less prior to the mid-1950s) gave poor high treble and bass output. Some models also provided effects such as an electronic tremolo unit. In confusion over nomenclature, Fender labeled early amplifier tremolo as "vibrato" and called the vibrato arm of the Stratocaster guitar a "tremolo bar" (see vibrato unit, electric guitar, and tremolo). Some later amplifier models included an onboard spring reverb effect, one of the first being the Ampeg Reverberocket amp. In the 1950s, several guitarists experimented