A DAC is an abbreviation of a Digital-to-Analog Converter. It is intended to transform digital signal of audio sound into analog one to be transferred by a headphone amp.
Usually headphones and a DAC are connected through an amp that serves a mediator.
Audio amplifier is an electronic device that increases low power electronic sound signals to the rate that is enough for reproduction of the speakers or headphones. Audio amplifiers may be found in a variety of sound systems including home stereo systems, music instruments, guitars, etc. They are the concluding step of a typical chain of audio reproduction before the signal gets the speakers.
Any electric device is characterised by power that depends normally on impedance value. We can see a distinct impedance of audio loudspeakers. Here we can count for a definite volume to expect. Unlike loudspeakers headphones have several notions of power for each type of impedance (8-600 Ohm).
One of the common questions with casual audio listeners is ‘Do I need a headphone amp?’. In fact, almost any audio device that serves as a source of sound and a headphone jack has an embodies amplifier. That is the detail that makes the headphones play perceiving and transmitting the signal of the source.
As an integral part of guitar (and bass) effects, the loop pedal, also known as a looper or loop station, lets you record the instrument’s signal and loop it indefinitely. Unlike Delay, which is an effect used to echo a sound, a looper is a tool that repeats a recorded signal identically.
The Wah-Wah pedal is a frequency filter controlled by foot movement. By changing the position of the pedal, the musician changes the frequency, equalizer setting, getting a “croaking” sound. This is a parametric filter, in which the center frequency of the peak is changed using the pedal.