Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Solid State Talk all about solid state amplification.

AD825 Op Amp..anyone familiar with it??
AD825 Op Amp..anyone familiar with it??
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 2nd December 2003, 07:32 AM   #1
MrGuitardeath is offline MrGuitardeath  United States
Banned
 
Join Date: Nov 2005
Default AD825 Op Amp..anyone familiar with it??

I'm trying to find someone that has used this op amp in their guitar amp.

It's specs are literally ten times greater than some of the higher end chips used in solid state amps. It exceeds them all.

It's not very cheap but considering it's slew rat is 140V/uS . The TL072 which is a common high performance chip is at a mere 16V/uS!!!!]

The bandiwdth difference is pretty much the same. Ten times more bandwidth from the AD825. I'm hoping someone will have some info on it for me in guitar amp use and maybe even a cheap supplier being most everywhere I can find it it is really pricey.
  Reply With Quote
Old 2nd December 2003, 01:38 PM   #2
georgehifi is offline georgehifi  Australia
diyAudio Member
 
georgehifi's Avatar
 
Join Date: Sep 2003
Location: Manly Australia (Jewel of the Pacific)
Send a message via MSN to georgehifi
Yeah, i`ve used it a lot, only comes in smd single package expensive little sucker, but sounds better than any other opamp that i`ve used, great transient attack, very clean and grain free in the mids and treble (which is unusual for a chip thats got the transient attack of this one) and i`ts got a great meaty powerfull bass. (has output current of 80ma) (also near 0mv dc offset).
Cheers George
PS It likes to run with not less than 15v rails, and gains of not less than 4x (square waves can start to overshoot too much at unity or less than 4x gain)
__________________
Avatar : Production Lightspeed Attenuator
www.lightspeedattenuator.com
  Reply With Quote
Old 4th December 2003, 03:13 PM   #3
peufeu is offline peufeu  France
diyAudio Member
 
Join Date: Mar 2001
Location: Lyon, France
Default AD825

I've build an active crossover with them. They sound good IMO. God choice.
  Reply With Quote
Old 4th December 2003, 04:02 PM   #4
jean-paul is offline jean-paul  Netherlands
diyAudio Moderator Emeritus
 
jean-paul's Avatar
 
Join Date: Sep 2002
Location: Germany
They must be good if they're Gods choice
__________________
It's only audio. Member of the non modular PCB design committee
  Reply With Quote
Old 4th December 2003, 08:40 PM   #5
georgehifi is offline georgehifi  Australia
diyAudio Member
 
georgehifi's Avatar
 
Join Date: Sep 2003
Location: Manly Australia (Jewel of the Pacific)
Send a message via MSN to georgehifi
I thank god for them, before them i could`nt find an opamp that was great with transients that did`nt sound brittle through the mids and highs, and i tried o lot of them, so i kept using the op275 which was at least smooth if a bit dead in the transient department.
I just wish they made them in the standard package as well as smd.
Cheers George
__________________
Avatar : Production Lightspeed Attenuator
www.lightspeedattenuator.com
  Reply With Quote

Reply


AD825 Op Amp..anyone familiar with it??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

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
AD825 alternatives? woodturner-fran Parts 0 27th November 2008 12:41 PM
3 - AD825 adapters mattjk Swap Meet 0 9th March 2005 11:15 PM
WTB: AD825 opamps Mark Hathaway Swap Meet 7 22nd May 2004 08:59 PM
Need some AD825's rbroer Parts 1 17th February 2004 10:37 AM
decoupling AD825 jarthel Digital Source 0 18th June 2002 03:53 PM


New To Site? Need Help?

All times are GMT. The time now is 10:36 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 16.67%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki