ok i gotta few questions about a tubescreamer

Its not a distortion pedal correct?

Will it sound like a tv with no reception at all if plugged into a distorted amp?

What is it used for exactly, ive heard things such as better lead sounds, and its good for getting better harmonics
its an overdrive pedal. My tubescreamer is built to get that old calassic rock sound ala zeppelin, SRV etc. Yes it works well for lead lines
tubescreamer is usually used to warm the tone in a valve amp. it simulates the sound of a valve amp cranked to get that natural power distortion. if im wrong someone correct me

Ibanez RG2550E
Jackson DKMG
Peavey ValveKing Head & Slant Cabinet
Peavey 5150
Ashdown Fallen Angel 4x12 Cab
Ibanez Tubescreamer TS9