DIY headphone amplifier - diyAudio
Go Back   Home > Forums > Amplifiers > Headphone Systems

Headphone Systems Everything to do with Headphones

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 6th August 2004, 03:41 AM   #1
diyAudio Member
 
Join Date: Mar 2003
Location: Ohio
Default DIY headphone amplifier

i was just wondering if anyone has any particular non-battery powered diy headphone amplifier designs they've had particular success with. thanks.
  Reply With Quote
Old 6th August 2004, 04:28 AM   #2
sam9 is offline sam9  United States
diyAudio Member
 
sam9's Avatar
 
Join Date: Jun 2002
Location: Left Coast
Take a look at the attached .pdf. This is very, very quiet. Distortion and noise is below what I can measure. There seems to be a wide latitude regarding what transistors are used, I've tried different combinations with success. It is class A so you need some kind of heatsinking on the outputs. I used small TO-220 on-board type which brings the idling temp down from about 95degC to about 55degC.

I've used a pair of 9V batteries, a regulated supply and a very crude un-regulated supply made from a $9 doorbell xformer, 1N4004's, snubbers and two 220uF caps. All were totally silent. I think optimal is an unregulated supply with a little more substance than i used (I was trying for worst case). If you use more than 15V rails, you may need to increase the value of the output resistor as that is your overcurrent protection.

How do they sound? I'm biased, obviously. Nonetheless, used with good headphones I get the clearest, uncolored sound I've heard. To be honest, and combination of good headphones and a good headphone amp will get similar results. On the otherhand, if you are looking for a classic tube-like sound these aren't for you.

NOTICE: The attached digram may be used for personal use, only. Do not use it to develope a product for sale. Do not re-post on another forum. Do not publish it anywhere. If you wish to do any of these, contact me first for permission.
Attached Files
File Type: pdf headphone.pdf (32.9 KB, 403 views)
  Reply With Quote
Old 6th August 2004, 04:46 AM   #3
diyAudio Member
 
Join Date: Apr 2004
Location: Atlanta, GA
I've build both a Pimeta and a PPA using the info from Tangentsoft. He sells the PCB's, which makes them really easy to build. They both sound great with my Beyerdynamic DT770's and Sony CD3000's.

--Ferdi
  Reply With Quote
Old 31st August 2004, 11:24 PM   #4
Oil is offline Oil  United Kingdom
diyAudio Member
 
Join Date: Aug 2004
Location: Midlands, UK
I've had enourmous success with the Gilmore Dynamic Class A headphone amp - although it was designed speicifically with grado's in mind. Head over the http://www.head-fi.org and look at the DIY forums!! and also http://www.headwize.com in the library section.
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
JLH headphone amplifier steveh49 Headphone Systems 8 14th May 2014 03:31 PM
DOZ headphone amplifier Gomer Headphone Systems 14 29th October 2013 08:04 PM
headphone amplifier sparkle Headphone Systems 31 15th October 2007 11:33 AM
OTL Headphone amplifier Thom Headphone Systems 10 4th January 2003 11:18 PM
DOZ Headphone amplifier gretzteam Headphone Systems 6 1st March 2002 11:32 AM


New To Site? Need Help?

All times are GMT. The time now is 11:16 PM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2