Perhaps the oldest and most storied genre of entrant in this list, MIDI foot pedals have existed in some form or another since the final days of the hair metal era. A traditional setup involves a rack mounted switcher, which has five or more loops in which a guitar tech would place an analog pedal like a Tube Screamer or a Big Muff. The rack lurks in the shadows of the stage behind the wall of amps, untouched by the guitarist. Said guitarist then stomps on a foot controller up front to send MIDI Program Change (PC) messages to the switcher, telling it which loops to engage and disengage. One button enables or disables an infinite number of effects, making it much easier to focus on more important tasks like playing guitar, chugging Jack Daniels, or glaring menacingly at your guitar tech.
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Минобороны России раскрыло подробности о перехваченных за ночь БПЛА ВСУ08:17，更多细节参见https://telegram官网
更关键的是，这只虾已经不只是极客玩具。地方政府已经下场，正式“养龙虾”。