If you ever spot Spam (either in the forums, or received via forum direct message) please use the Report button at the bottom of each post to make sure a Moderator can handle it quickly. Thanks for your help in keeping things running smoothly!
Yes you may use the Dragonfly USB DAC to connect your computer to any amp with a phono or 3.5mm inputs.
However this is not recommended as the Dragonfly has a headphone amplifier built in to it and in my experience this do not make a good sources for stereo amplifiers. However, this is a rule of thumb and not a hard fact.