What is really low end in a "low end" amp?
The clean tone?
The inbuilt overdrive?
The less wattage?
If your amp sounds good in clean setting, you can go ahead with pedals.
What people usually talk about is using overdrive pedals like Boss SD or Tubescreamer TS etc in front of a tube amp, and using that to get Metal sound.
The same pedal if you use in front of your "low end" amp, you may sound like a Jazz or Blues player.
In any case, it does add much to the tone!
You donít get what you deserve, you get what you negotiate.