I'm looking for a budget amp (<150) to power DBV#3 t50rps. I'm having trouble understanding the specs that headphone amp makers give. Can someone give me some amp recommendations for orthos or help me make sense of what ortho's need? I know orthos need high voltages, but how do you find that...

Is there any way to without using tons of 9V batteries? Are there other options in a similar price point that do the job?

My friend recently offered me Siberia v2s for 40$. I know they are gaming headphones, so are there any that are around the same price (+-10) that are better quality?   Thanks!