[CrabbyTuna]

I got the  Beryerdynamic DT880 250 ohm version and I want to know if the Fiio E11 or the Fiio E10 be able to drive them properly? (I know the Fiio E10 is a DAC/Amp)
 
If they don't then are there any other amps around the $40-$70 range that would? I don't mind if it is portable or desktop, I just want it to drive the DT880s.
 
I have also heard great things about the O2 amp. Is it worth spending the extra money?
 
I am not very smart so I don't understand  Volts,  milliwatts, Ohms and how they relate to each other, so figuring out what amp I need has been very hard for me. I just need someone to give me suggestions or point me in the right direction. I appreciate your feedback. 

 

[jaddie]

The E11 wouldn't be a good choice, it won't provide enough volume for you.  The E10 is better, but still a bit weak on maximum volume.  
 
The O2 would be the best choice, no problem recommending that one, pretty much all the time.

 

[imackler]

O2 would be my first pick, though out of your price range. The Fiio E09K sounds good w/ the DT880 and you may be able to pick up one used for that price. 

 

[PurpleAngel]

Quote:

I got the  Beryerdynamic DT880 250 ohm version and I want to know if the Fiio E11 or the Fiio E10 be able to drive them properly? (I know the Fiio E10 is a DAC/Amp)
If they don't then are there any other amps around the $40-$70 range that would? I don't mind if it is portable or desktop, I just want it to drive the DT880s.
I have also heard great things about the O2 amp. Is it worth spending the extra money?
I am not very smart so I don't understand  Volts,  milliwatts, Ohms and how they relate to each other, so figuring out what amp I need has been very hard for me. I just need someone to give me suggestions or point me in the right direction. I appreciate your feedback. 

The Fiio E11 can drive 250-Ohm Beyerdynamic headphones.
 
This might work for you.
PAV2V (Pocket Amplifier 2 Version 2), sell on eBay for around $60.
Can work off AC or it's batteries

 

[jaddie]

Quote:

The Fiio E11 can drive 250-Ohm Beyerdynamic headphones.

Drive them, yes, but just not very loudly. 
Quote:

This might work for you.
PAV2V (Pocket Amplifier 2 Version 2), sell on eBay for around $60.
Can work off AC or it's batteries

The PAV2V is essentially the LM4881 headphone amp chip.  Because it's operating on a single supply, there are huge 2200uF coupling caps in the output, and smaller ones on the input.  While this isn't a bad design, and is certainly high quality for low cost, the 02 uses no coupling capacitors at all, uses a dual supply (which is why no caps are required), and avoids the single un-buffered opamp output. The cost of the 02 is roughly twice the PAV2V, but it's easily more than twice the amplifier.