Sound Design Stack Exchange is a question and answer site for sound engineers, producers, editors, and enthusiasts. It's 100% free, no registration required.

Sign up
Here's how it works:
  1. Anybody can ask a question
  2. Anybody can answer
  3. The best answers are voted up and rise to the top

I have Set Top Box (STB) and I'm trying to output voice from STB to Headphones. But it's outputting very very low voice quality. I increased volume of Headphones to its maximum level but still very poor voice quality. I forgot the name of intermediator of STB and Headphones cable but it's a cable from good company.

Do I need to Replace the Headphones or is there something wrong with output from STB. Because my Toshiba 29" LED TV properly outputting Audio from STB.

Any help would be appreciated.

I have below type cable between STB

enter image description here


I have plugged in cable in Line-out port and I could not found any Headphones-out port on STB. Now How can I solve the issue as explained above?

share|improve this question

migrated from Jan 24 '14 at 12:01

This question came from our site for engineers, producers, editors, and enthusiasts spanning the fields of video, and media creation.

This question appears to be off-topic because it is about home audio/video and it is unclear what you are asking. – AJ Henderson Aug 12 '13 at 13:50
up vote 2 down vote accepted

It sounds like the output you are using is not intended as a headphone output. If that is the case, then the impedance mismatch could result in a very quiet audio feed that is not powerful enough to drive the headphones. Are you sure that it is a headphone output and not a line output? Is the quality low or the volume?

Without brands and models involved everything is guess work at best, but being a line output instead of a headphone output is the most common reason for the problem you describe.

share|improve this answer
You're right. It's a line output. But I could not found Headphones output !? :( how can I resolve it? Also check that I have edited question about this explanation. – NullPointer Aug 13 '13 at 4:20
If you absolutely need headphones, you will need a pre-amp to bring up the line output to a headphone compatible level. That should provide the necessary power to drive your headphones off the line output. – AJ Henderson Aug 13 '13 at 14:36
Something like should work. – AJ Henderson Aug 13 '13 at 14:42
Ok. I understood it. That means I require one converter which can amplify the signals receiving from STB, right? – NullPointer Aug 14 '13 at 4:37
Yes. That is correct. – AJ Henderson Aug 14 '13 at 12:54

Your Answer


By posting your answer, you agree to the privacy policy and terms of service.