Other design options include finishes, such as lacquer, wax and oil; flat and carved designs; luthier-produced custom-designed instruments; headless basses, which have tuning machines in the bridge of the instrument (e.g., Steinberger and Hohner designs) and several artificial materials such as luthite. The use of artificial materials (e.g., BassLab) allows for unique production techniques such as die-casting, to produce complex body shapes. While most basses have solid bodies, they can also include hollow chambers to increase the resonance or reduce the weight of the instrument. Some basses are built with entirely hollow bodies, which change the tone and resonance of the instrument. Acoustic bass guitars have a hollow wooden body constructed similarly to an acoustic guitar, and are typically equipped with piezoelectric or magnetic pickups and amplified.
Detuners, such as the Hipshot, are mechanical devices the player operates with the thumb on the fretting hand to quickly retune one or more strings to a pre-set lower pitch. Hipshots typically drop the E-string down to D on a four-string bass. Rarely, some bassists (e.g., Michael Manring) add detuners to more than one string, or even more than one detuner to each string, so they can retune during a performance and access a wider range of chime-like harmonics.
Maybe you've already got a specific brand in mind and want to see all the digital pianos they offer. All you have to do is click on the brand on the left hand side of the screen and within a few moments you'll have access to everything that's available. For that matter, you can always play is safe and stick to the top-rated items…and there are plenty of those in this selection.