An effects processor that is capable of producing more than one type of effect simultaneously. So, for example, a rack unit might be able to provide chorus, delay, and reverb, all at once. Though some multieffects boxes have multiple ins and outs to which independent effects can be assigned, it is more common for a multieffects box to arrange its various effects into a chain of series effects, one after another, all operating sequentially on the same signal. For example, the unit above that can provide chorus, delay, and reverb would send the signal through the chorus, then the chorused result into the delay, then the delayed chorused result into the reverb before outputting it to the outside world.