Fender Telecaster this famous rarity. In 1951, Fender released the innovative and musically influential Precision Bass as a similar looking stable-mate to the Telecaster. This body style was later released as the Fender Telecaster Bass in 1968 after the Precision Bass had been changed in 1957 to make it more closely resemble the Fender Stratocaster guitar. At the time Leo Fender began marketing the new, more refined Stratocaster in 1954, he expected it to replace the Telecaster, but the Telecaster's many virtues and unique musical personality have kept it in demand to the present day. Leo Fender's simple and modular design was
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