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Customer Discussions > Kindle forum

Kindle Fire HD Headphone / Audio output rating?

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Showing 1-17 of 17 posts in this discussion
Initial post: Jan 20, 2013, 12:13:38 PM PST
H.F. Mudd says:
What is the headphone / audio output rating for the 3.5mm output jack on the Kindle Fire HD in milliwatts (MW)?

I need to boost the audio output signal but don't know what type of Headphone Amplifier (FIIO, Black Box, etc.) I need to get to do so.

This information should be included in the device's specifications.

In reply to an earlier post on Jan 20, 2013, 12:19:19 PM PST
BooDittie says:
Do you have any idea how many customers are here because they can't even figure out how to turn on their device?

In reply to an earlier post on Jan 20, 2013, 12:23:11 PM PST
If it isn't listed on the product pages, I have no idea where else to look.

In reply to an earlier post on Jan 20, 2013, 12:32:47 PM PST
H.F. Mudd says:
I didn't see it there...

In reply to an earlier post on Jan 20, 2013, 12:37:37 PM PST
BooDittie says:
There's a chance customer service could track down that information. There's also a chance that people here will tell you they know stuff that they don't.

In reply to an earlier post on Jan 20, 2013, 12:51:28 PM PST
R. D. Clark says:
A typical headphone amp in a mobile device like this puts out 50-100 mW total. No evidence to suggest Fires are anything but typical.

In reply to an earlier post on Jan 20, 2013, 2:07:01 PM PST
H.F. Mudd says:
And Headphone amps typically put out between 50 and 150 MW but vary greatly in output, quality, and price (from around $10 ==> more than the cost of the Kindle HD).

Posted on Jan 20, 2013, 2:10:25 PM PST
H.F. Mudd says:
Guess I'll try sending an e-mail to CS to see if I can get a response. This is from on-line chat...

You are now connected to Thiruvarutselvan from Amazon.com.
Me:I would like to know what the audio output rating is for the 3.5mm headphone jack on my Kindle Fire HD 7" in Milliwatts (MW) to be able to purchase the proper headphone amplifier to use with it. I did not find this information in the specifications.
Thank you
Thiruvarutselvan:Hello, I'm Thiru from the Amazon Kindle Support. I'll be happy to assist you
Let me connect you to a member of our Kindle specialist team. It will only take a moment.
A Customer Service Associate will be with you in a moment.
You are now connected to Danyelle from Amazon.com.
Danyelle:Hello xxxxxx, I'm sorry for the mix up but I'm not a member of our Kindle team. The chat must have got miss routed. Is it okay if I send you over to them?
A Customer Service Associate will be with you in a moment.
You are now connected to Natalie R from Amazon.com.
Natalie R from Amazon.com has left the conversation.
Natalie R from Amazon.com has left the conversation.

Posted on Jan 20, 2013, 11:01:03 PM PST
H.F. Mudd says:
E-mail Response from Customer Support equally useless. Guess I'll try phone support next...


I'm sorry you're unable to find a Kindle Fire HD 7 compatible headphone. I'd like to assist.

In order to purchase a headphone compatible with Kindle Fire HD 7, please visit the link below:


All the headphone you find on the above link are compatible with the Kindle Fire HD. You can choose anyone.

If you need any other assistance please feel free to contact us and we will be more than happy to help you. You can reach us by email, chat or phone directly and toll-free from many countries by clicking the Contact Us option in the right-hand column of our Kindle Support pages at:


When you visit our website and select Contact Us, click on the "Phone" tab, enter your number, and we'll call you right back. If your country isn't listed or you're unable to take advantage of the Contact Us feature, you can call us directly at 1-866-749-7771 or 1-206-206-2992 (if you're calling from outside the U.S.).

Thanks for your interest in Kindle.

Thank you for your inquiry. Did I solve your problem?

If yes, please click here:

If no, please click here:

Arshad A

Your feedback is helping us build Earth's Most Customer-Centric Company.
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Posted on Jan 20, 2013, 11:18:54 PM PST
31mW per channel at 16 ohms impedance

Googled a teardown then looked up the specs on the CODEC.

Posted on Jan 21, 2013, 12:06:13 AM PST
H.F. Mudd says:
Wow, that's 1/2 of what my now "antique" Sandisk Sansa MP3 player puts out (60mw / channel into 16 ohms) that this unit was supposed to replace. That's really lame...Small wonder they didn't advertise the spec and that it has trouble pushing a T-amp or a decent pair of headphones...Thanks for the info.

Posted on Jan 21, 2013, 12:44:10 AM PST
no prob. glad I could help

In reply to an earlier post on Jan 21, 2013, 1:18:14 AM PST
Last edited by the author on Jan 21, 2013, 4:19:39 AM PST

The two 8.9" models I've tried are underpowered relative to the 7" when it comes to the speakers but the headphone output seems similar... The module for the 8.9" one if interested later is GS24639.

At the 'teardown' by ifixit:
*EDITED( after Old Rocker pointed out that I was referencing their teardown for the Kindle Fire.

Here's the one for Kindle Fire HD

They say: Wolfson WM8962E Ultra-Low Power Stereo CODEC.

That info links to the page for more info on WM8962B, at

"The WM8962B is a low power, high performance stereo CODEC designed for portable digital audio applications.

Here's the paragraph on the headphone output
Wolfson 'Class-W' ultra-low power headphone driver
- Up to 31mW per channel output power at 1% THD+N into 16Ω at 1.8V

For anyone who's interested in the speakers, which have been reviewed as the best on any small tablet (and better than what's on the iPad 4)

"Stereo class D speaker drivers provide 2W per channel into 4W BTL loads, with a 5V supply. Low leakage, excellent PSRR and pop/click suppression mechanisms also allow direct battery connection to the speaker supply. Flexible speaker boost settings allow speaker output power to be maximised while minimising other analogue supply currents."
Programmable Audio Enhancement DSP with Presets
- Virtual Surround Sound
- HD Bass
- ReTune™
Fixed Audio Processing DSP
- 3D stereo widening
- 5-band Parametric EQ
- Dynamic range controller

(Thanks, Old Rocker for the quick catch.)

- Andrys

In reply to an earlier post on Jan 21, 2013, 1:29:22 AM PST
That's for the original, Mudd asked about the HD 7

In reply to an earlier post on Jan 9, 2016, 1:55:36 PM PST
Kristy KH says:
I know this is an old thread - but what kind of Headphone Amplifier did you get? Thanks!

Posted on Jan 9, 2016, 3:46:00 PM PST
H.F. Mudd says:
I ended up getting a topping NX-1 headphone amp to pair with it, but was not very happy with the result - the volume went up, but so did the noise. However, to be fair, I mostly use the kindle fire hd with a fairly high end / home made boombox, not headphones. For loud, reasonably high quality output on the boombox, I use this small Behringer mixer to boost the signal gain from the kindle: BEHRINGER XENYX 302USB

Posted on Jun 28, 2016, 11:14:39 AM PDT
I tried using a Zoom H1 recorder with my Kindle. Result.....I couldn't. Any ideas why?
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This discussion

Discussion in:  Kindle forum
Participants:  8
Total posts:  17
Initial post:  Jan 20, 2013
Latest post:  Jun 28, 2016

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