Dumb question......why do you need a preamp?

I feel if you have a power amp ,we'll yes you need one...if you have a receiver  nope.

No preamp here, only a phono stage and switchbox.

Or as Mapletree Audio calls it, a Line Router.

I wish I had an explanation for the vastly better sound you get with a good preamp. I don't. But in almost every case it is. This may change over time as DACs incorporate ramps into their circuitry... also, separate boxes almost always sound better. 

This is an issue for folks without a good system and realize they can build one without one with all digital. Sounds great... then they put a preamp into their system and realize all the body and naturalness of the sound they were missing. If they don't do it, they may never know. There are lots of testimony to this effect scattered around this site. 

This is an issue for folks without a good system and realize they can build one without one with all digital. Sounds great... then they put a preamp into their system and realize all the body and naturalness of the sound they were missing. If they don’t do it, they may never know. There are lots of testimony to this effect scattered around this site.

@ghdprentice 100% my experience. With a good tube preamp - more palpable, alive, "full" sounding. Imaging is more holographic 3D, too. More satisfying and immersive.

I defintely won’t go back. I DO think it’s a coloration. But a really beautiful and special one - a happy accident the universe left for us to discover. We’re NOT scientific instrumentation. There is a very real possibility that our perception of musical information is maximized with reproductions that are "colored" in a certain way beneficial (symbiotic?) to our organic interpretations.

I have used active, passive and just volume controls on components. The best sound without question, for me, has always come from a active preamp. The most disappointing for me has been the performance I have gotten from several very high quality passives.