Get a guitar multi effects unit whose fave effects are very good to excellent for you. These all have stereo headphone outputs along with stereo out. Sometimes combined in one stereo output. Some of these also have an aux input that ipods, cd players, etc can be plugged into. If you dont allready have some, also get some good full range headphones. This as the basis for your at night during quiter times and when wanting lots more perceived volume.
Ok, this effects unit needs to be programmed as best you can for "ready for recording" tone. Besides feeding the headphones mentions above. It will do excellent job of feeding powered studio monitors, PA systems via their mixer input, and even full range computer speakers whose sound you like for music playback.
Makes for excellent and most of the time, much fuller & richer sounding monitor rig then most little guitar combo amps. Excellent for dorm rooms, apts, and even live use via going thru house PA.