#1
I now have all the effects that i need to play without an amp: Overdrive, Reverb, Phaser and a tuner. Is it bad to perform plugging your guitar straight into the speakers through a direct box not an amp.

I have currently been using a cd player that has a guitar input with a straight clean signal without any effects or distortion. I turn on my effects and i get a tone i really like without the nasty extra amp lows or treble, it's just the way my guitar sounds.

So what do you think?
Quote by one vision

You wouldn't dance to a metronome.

On meth you would.
#3
If you like it and it sounds good to you, use it.
"Your sound is in your hands as much as anything. It's the way you pick, and the way you hold the guitar, more than it is the amp or the guitar you use." -- Stevie Ray Vaughan

"Anybody can play. The note is only 20 percent. The attitude of the motherfucker who plays it is 80 percent." -- Miles Davis

Guthrie on tone: https://www.youtube.com/watch?v=zmohdG9lLqY
#4
You can't plug your guitar directly into your speakers unless they're powered and have an input that matches your guitar's output.

A direct box is usually a preamp, in that it's what matches the guitar input to the input of the power amp. Some obvious other "direct boxes" include Pods, Axe, Kempers, as well as a wide variety of multiFX foot pedals. Most of these are capable of functioning as a preamp (matching device) as well as what else they do.

Some powered speakers actually have a preamp built in. Check this one, for example: http://www.carvinguitars.com/products/PM12A
You'll notice that it has a very simple preamp on the back capable of handling a guitar (as well as a keyboard and/or a bass or vocal mike) and an MP3 player (or computer output).