At the heart of most stages is the acoustic drum set. It's made up of tom-toms, snares, at least one bass drum and an array of cymbals. You'll find all of those here, and there are choices for anyone. If you're just getting started as a drummer, you can get up and running fast with a shell pack or drum kit that gives you everything at once. Or, if you prefer, you can pick individual pieces ""a la carte"" to customize your own set from the ground up. The choice is yours.
The string can be plucked (or picked) at any point between the bridge and the point where the fretting hand is holding down the string on the fingerboard; different timbres (tones) are produced depending on where along the string it is plucked. When plucked closer to the bridge, the string's harmonics are more pronounced, giving a brighter tone. Closer to the middle of the string, these harmonics are less pronounced, giving a more mellow, darker tone.
There are a range of different string types including all-metal strings, which are available in many varieties of winding or finishing, each of which produce different tone, including roundwound, flatwound, halfwound, ground wound, and pressure wound); as well as metal strings with different coverings, such as tapewound and wound with plastic coatings. The variety of materials used in the strings gives bass players a range of tonal options. In the 1950s and early 1960s, bassists mostly used flatwound strings with a smooth surface, which had a smooth, damped sound reminiscent of a double bass. In the late 1960s and 1970s, players began using roundwound bass strings, which produce a brighter tone similar to steel guitar strings, though flatwounds also remained in use by players seeking a vintage tone. Roundwounds have a brighter timbre (tone) with longer sustain than flatwounds.
Just like the acoustic instruments they're derived from, digital pianos come in different sizes. They also offer dozens of options for your perusal, so you can weigh all kinds of factors to find the right model for you. For instance, if you're looking to pack a lot of piano into as small a space as possible, consider instruments such as the Williams Allegro 88-Key Digital Piano or the Casio CDP-120. These are fairly compact pianos, but that doesn't limit the breadth of their samples and sound settings.
Drummers using electronic drums, drum machines, or hybrid acoustic-electric kits (which blend traditional acoustic drums and cymbals with electronic pads) typically use a monitor speaker, keyboard amplifier or even a small PA system to hear the electronic drum sounds. Even a drummer playing entirely acoustic drums may use a monitor speaker to hear her drums, especially if she is playing in a loud rock or metal band, where there is substantial onstage volume from huge, powerful guitar stacks. Since the drum kit uses the deep bass drum, drummers are often given a large speaker cabinet with a 15" subwoofer to help them monitor their bass drum sound (along with a full-range monitor speaker to hear the rest of their kit). Some sound engineers and drummers prefer to use an electronic vibration system, colloquially known as a "butt shaker" or "throne thumper" to monitor the bass drum, because this lowers the stage volume. With a "butt shaker", the "thump" of each bass drum strike causes a vibration in the drum stool; this way the drummer feels their beat on the posterior, rather than hears it.