Headphone amplifiers with analogue volume control

Wheel

— the most common type of volume control nowadays; its popularity is due primarily to two things. The first is ease of use: in particular, the control of the wheel is intuitive, moreover, such a knob can be easily found and turned by touch, blindly (this is especially important for portable models — see "Type"). The second point is versatility: the wheel can be connected both with the simplest analogue control loop and with a digital circuit. Moreover, the analogue adjustment in modern headphone amplifiers is carried out only by rotary controls. The disadvantages of this option include perhaps some bulkiness compared to buttons, but even in pocket models this moment is often not critical.

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