DAC's will usually have a number of inputs. Coaxial and Toslink Optical are the most common, while USB is still also very common.

The Optical and Coaxial connections can have a CD player, network streamer, television, dvd/blu-ray disc player, game console, and some computers.

The USB input can handle pretty much any kind of computer, or a phone with the appropriate adapter (OTG for android, Camera Connect Kit for iOS devices).

Every digital device with an analog output has a Digital to Analog Converter of some kind. In the case of phones, televisions, and computers, they are usually stuck on as an afterthought, or just to do the job of creating analog sound to be amplified and played through speakers.

Having a standalone DAC is a worthwhile investment in any modern Hi-Fi system, essentially all the circuitry involved in creating that signal you can hear from the 1's and 0's is housed in its own box, with usually a much better design than what you would find in your television or computer.

A DAC can be useful to connect digital devices to an analog amplifier if the amplifier doesn't have digital inputs. Or if you are after a cleaner, more refined sound.

Things to listen for in higher quality DAC's are separation of sounds (how well you can hear a single voice or instrument in the mix of all the others), "textures" of sounds (raspyness of a bow being drawn across the strings of a double bass), or the clarity of echo's and quiet noises among loud instruments.

Depending on what inputs your amplifier has, if it has a Minijack (or often labeled AUX) input, a simple minijack cable is required.

If your system has RCA inputs only, using a 3.5mm to RCA stereo adapter, or cable will solve this issue.

When powering Mojo on, press the 2 volume buttons at the same time to push the volume of the Mojo instantly to line level volume.

Yes.

BUT, because the Mojo is so compact, with a powerful amplifier built in, and a very powerful battery, it can get very warm.

Using a high current fast charger can make the Mojo run very hot while in use. It will shut itself down if it gets too hot, for its own protection. The Mojo will not run excessively hot when it is fully charged but still plugged in. Using a 1A or less (500ma) USB charger can keep it from getting too hot.

The Mojo has 3 inputs. A Micro USB port, an Optical Toslink port, and a 3.5mm Minijack Coaxial port.

The Micro USB port can be used from a computer (Mac, PC), an Android Phone (more on this later), or an iOS device (iPhone, iPod, iPad) via a CCK (Camera Connection Kit).

The Optical Toslink Jack can be used with anything with a Optical Output, such as a Television, network streamer, CD player, Blu-Ray/DVD Player, or Game Console.

The Coaxial minijack requires an adapter, or a specifically made cable, as the coaxial standard is usually an RCA plug. But devices you can plug into this are CD players, Blu-Ray Players, Network streamers, and some computers.

Using Mojo with either your headphones/earphones or your Hi-Fi system will improve clarity of sound drastically.

The Chord Electronics Mojo is a compact, portable Digital to Analog converter (DAC) and Headphone amplifier. Mojo, standing for "Mobile Joy", is designed to be used on the go with your mobile phone, or Digital Audio Player.