Cheap handheld oscilloscope to set gains?

[turtlestrap]

Is there anything specific to look for when searching for a little oscilliscope to use to set amplifier gains?

I am searching on amazon and found some cheap oscilloscopes that have good reviews:

Link 1

Link 2

Would these two be okay to use? Want something that will show me when my head unit starts clipping and then set my 650w rms monoblock gain.

Or if you can find anything else on amazon that's under $100 would be great if the two i listed aren't good.

Thanks a lot!

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[fasfocus00 5,000+ posts]

Velleman 140i

 

[turtlestrap]

Velleman 140i

You've used this one before?

 

[Boominburban 10+ year member]

I see these popping up everywhere OP, I too am interested in the replies to this ...As someone that owns a nice Hameg Oscope, I'm curious to say the least ....

If these are fairly accurate, it would be a great portable tool to have ...

 

[yogegoy]

As long as it has the X10 (if I recall) probe and all you need is it's sine wave. Here is my video link on how my amp makes a buzzing noise when it clips as confirmed by my Fluke "Setting Amp Gain with a Fluke and your ears", not saying your amp is the same as mine.

 

[fasfocus00 5,000+ posts]

You've used this one before?

i own one. use it fairly often too.

 

[turtlestrap]

As long as it has the X10 (if I recall) probe and all you need is it's sine wave. Here is my video link on how my amp makes a buzzing noise when it clips as confirmed by my Fluke "Setting Amp Gain with a Fluke and your ears", not saying your amp is the same as mine.

Yeah the specs say that the max input voltage is 80Vpp with the x1 probe(For the first link). I did some more research and you can read a lot more with the x10 probe. Also seen some Youtube videos showing guys setting their gains (never say how powerful the amp is), but I think im gonna order it. I'll post back if I get a good signal.

 

[Xrojas13 10+ year member]

If want on i got one brand new in box i never used lmk

 

[Xrojas13 10+ year member]

I have the VELLEMAN HPS140I

 

[turtlestrap]

Just read some more and asked around some more and turns out people have been using the DSO Nano 201 with the x10 probe that it comes with to set gains and apparently works up to 500Vpp with the x10 probe. So more than adequate for my needs. I'll update once I get it.