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Need headphone amp capable of driving 50 Ω earbuds at up to 5 V rms / 20 V peak (1% duty cycle)

post #1 of 8
11/8/12 at 5:39am
Thread Starter 

I'm looking for a headphone amp capable of driving 50 Ω earbuds at up to 5 V rms / 20 V peak (1% duty cycle).  Any recommendations would be terrific.  It doesn't need to incredibly high fidelity—I'm aiming for the low hundreds of $, if possible.

 

Thanks for reading!

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post #2 of 8
11/8/12 at 5:50am
Quote:
Originally Posted by Rogare View Post

I'm looking for a headphone amp capable of driving 50 Ω earbuds at up to 5 V rms / 20 V peak (1% duty cycle).  Any recommendations would be terrific.  It doesn't need to incredibly high fidelity—I'm aiming for the low hundreds of $, if possible.

 

Thanks for reading!

 

Interesting. Can I ask what you are trying to achieve by putting 20V into 50ohm earbuds? Blow up your ears, the earbuds or both?

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post #3 of 8
11/8/12 at 5:56am
Thread Starter 

The high volumes are for use with a very low duty cycle signal as part of an experiment.  No ears will be harmed in the amplifier's use. :)
 

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post #4 of 8
11/8/12 at 6:02am

20V into 50 ohms is 8 Watts. I doubt that there are any earbuds that are rated to take more than 1 Watt. I suggest you save your money and connect the buds directly to a speaker output on a speaker amplifier. An amp that is around 60 Watts into 8 Ohms should be able to give 8 Watts into 50...

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post #5 of 8
11/8/12 at 6:04am
Thread Starter 

Thanks for the reply.  I'll look into speaker amplifiers.  (The earbuds being used are specially for high levels—the specs in my original post are from their data sheet.)
 

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post #6 of 8
11/8/12 at 6:30am

I don't know any headphone amp that can generate 8 Watts into a 50 ohm load. I would be interested to know if one is out there. The amp I am using right now is rated at 4.5 Watts into 50 Ohms and it is very powerful. I only use a tiny fraction of that. The headphones I am using, Q701 are only rated to take 0.2 Watts.

 

This Bryston http://bryston.com/PDF/brochures/BHA1_BROCHURE.pdf is considered to be a powerful headphone amplifier and it is rated 4 volts into 32 ohms (500 mW) at 001% THD + N at 20-20K

 

By the way, what earbuds are you talking about?

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post #7 of 8
11/8/12 at 7:16am
Thread Starter 

Thanks for the link, much appreciated.  It might be higher end than I need, but I can take a closer look.

 

(They're actually called insert earphones—I mistyped above—and here's a link.)
 

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post #8 of 8
11/8/12 at 7:18am

Thank you, very interesting.

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