FS: LME49720HA/LME49600 Servo Headphone Amp - diyAudio
Go Back   Home > Forums > Commercial Sector > Swap Meet
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Swap Meet Sell your stuff here, who knows, some other fanatic might be interested!

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
Thread Tools Search this Thread
Old 22nd September 2010, 07:42 PM   #1
diyAudio Member
theAnonymous1's Avatar
Join Date: Feb 2004
Location: Anonymityville
Default FS: LME49720HA/LME49600 Servo Headphone Amp

For sale here is my hand made LME49720HA + LME49600 buffered headphone amplifier with DC servo.

This is more or less the design from the LME49600 datasheet and has a gain of 3x. There is one LME49720HA for each channel, using half the op-amp for the respective channels servo.

The output offset is 14mV/20mV. Not as low as I would have liked it to be, but it's perfectly acceptable. This is caused by the IC's natural offset characteristics; any DC on the inputs will be nulled by the servo.

The power supply is a DATEL BWR-15/330-D12A DC/DC converter. It can take a 9-18VDC input and output +/-15VDC @ 330mA. There is added CLC filtering on the outputs of the supply to clean up any residual noise. This converter alone sells for almost $90.

Digi-Key - 811-1723-5-ND (Manufacturer - BWR-15/330-D12A-C)

The ALPS volume pot has a switch that is used to control a FET that turns the supply on/off. A 12V 2A switching style wall-wart is included to power the DC/DC converter.

Please keep in mind this was a DIY project and it is being sold as such. Buyer takes all responsibly for it's use.

Price is $85 shipped (US/CA only).
Attached Images
File Type: jpg case1.jpg (138.7 KB, 208 views)
File Type: jpg case2.jpg (123.2 KB, 196 views)
File Type: jpg case3.jpg (122.0 KB, 202 views)
  Reply With Quote
Old 23rd September 2010, 04:36 PM   #2
diyAudio Member
theAnonymous1's Avatar
Join Date: Feb 2004
Location: Anonymityville
This is the only time I'll bump this thread and the only time I'll lower the price.

$75 shipped (US/CA only).
  Reply With Quote
Old 24th September 2010, 09:29 PM   #3
diyAudio Member
theAnonymous1's Avatar
Join Date: Feb 2004
Location: Anonymityville
  Reply With Quote


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
Lme49600 headphone amp Dr. Popo Chip Amps 67 12th April 2013 12:55 AM
Fs Metal Can-8 Opamp :lme49710ha/lme49720ha bbp Swap Meet 15 25th December 2008 05:25 AM
FS: 8x LME49720HA TO-99 theAnonymous1 Swap Meet 1 14th September 2008 03:39 AM
JLH headphone amp with FET's and servo nelsonvandal Headphone Systems 17 30th August 2008 09:26 PM
TPA6120 headphone amp with servo nelsonvandal Headphone Systems 3 8th November 2007 07:54 PM

New To Site? Need Help?

All times are GMT. The time now is 06:08 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2