Comparison Alesis VI49 vs Alesis VI25

The total number of keys on the keyboard.

The more keys provided in the design, the wider the instrument's own range, the more notes it can play without resorting to octave shift or transposition. On the other hand, this characteristic directly affects the dimensions and cost, and an extensive range is not required so often. Therefore, 88 -key instruments corresponding to a full-size classical piano keyboard are quite rare. But compact models with only 25 keys(2 octaves), on the contrary, are popular: for the purposes for which MIDI keyboards are used, this is often quite enough. Other common options are the 49 -key (4 octave) and 61 -key (5 octave) models; somewhat less common are 32 and 37 keys.

The number of encoder controlsprovided in the design of the keyboard.

Such a knob looks like a rotary knob, with which you can control various functions of the device to which the keyboard is connected — for example, turn the virtual knobs in the programme for recording and sound processing. At the same time, we note that a full-fledged encoder is capable of rotating 360 ° and turning to any angle in any direction, however, keyboards can also contain knobs with a limited rotation sector — they can also be called encoders. None of these options has a clear advantage: in some cases, an unlimited turning sector is more convenient, in others, a limited one.