Comparator problems

[RYCBAR]

I am making an audio amplifier using different op amp stages, one of them being a comparator. I have tried using a couple different Op Amps, both the 741 and the 386.
But I have the problem when -Vcc pin goes to ground (which is how I want to be able to design the circuit) the output signal is not like the output of a comparator. It is a complete mess, there is a lot of noise and peaks that show up.
Has anyone seen this problem before or know how fix it.

 

[JoeJester]

can you post your schematic?

 

[audioguru]

The 741 opamp is 46 years old and has very poor spec's (lots of noise output).
The LM386 is not an opamp, it is a little power amp that drives a little speaker.

An opamp needs its input biased properly but the LM386 amplifier already is biased and also already has negative feedback which is not used in a comparator circuit.

You forgot to say what is your input but if it is a low level then you must connect it with shielded audio cable or it will pickup interference.