Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki 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!

FS: Keantoken's simple error-correction super buffer
FS: Keantoken's simple error-correction super buffer
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 3rd October 2017, 03:49 AM   #1
BRN is online now BRN  United States
diyAudio Member
 
Join Date: Sep 2006
Default FS: Keantoken's simple error-correction super buffer

Sold

I’m selling the highly regarded Keantoken super buffer I built. I have more preamps than I need, so I’m putting this great preamp/buffer up for sale.

The Kuartlotron is unique in that it doesn't use feedback. It doesn't need feedback, because it cleans up after itself - it subtracts its own distortion. Yet it isn't reliant on its own error correction mechanism either - at frequencies faster than the error correction, it simply operates as a passive buffer. The high degree of efficiency and redundancy in the signal path lends the Kuartlotron virtual immunity to RF interference and an enormous signal bandwidth. Without feedback, it is unfazed by interference because there is little need to load down the internals at high frequencies to prevent oscillation.

What's unusual for this type of circuit is that it doesn't suffer from the usual complaints about non-global feedback circuits - distortion is astonishingly low and there is no danger of thermal runaway or bias drift. It is fully temperature-compensated and the bias is set by the 1k resistor. Noise is relatively insignificant.

Features:
Aluminum chassis
Three inputs using a high quality Grayhill switch– all signal and grounds are switched
High quality Neutrik RCAs
Power supply: Two RJM S-Reg Low noise shunt-source regulator, one for each channel
50K ebay DACT step Attenuator
Two outputs
Attached Images
File Type: jpg IMG_Front.JPG (104.7 KB, 294 views)
File Type: jpg IMG_Front2.JPG (76.6 KB, 291 views)
File Type: jpg IMG_Back.JPG (107.3 KB, 287 views)
File Type: jpg IMG_Top.JPG (129.1 KB, 293 views)

Last edited by BRN; 27th October 2017 at 03:38 PM. Reason: Price drop
  Reply With Quote
Old 3rd October 2017, 05:53 AM   #2
SirByrd is offline SirByrd  United States
diyAudio Member
 
SirByrd's Avatar
 
Join Date: Dec 2010
Location: Seattle, WA
Did you make that chassis? Bravo if so!
  Reply With Quote
Old 3rd October 2017, 11:32 AM   #3
BRN is online now BRN  United States
diyAudio Member
 
Join Date: Sep 2006
I wish I could take credit, but no. I found it on eBay.
  Reply With Quote
Old 13th October 2017, 11:23 AM   #4
BRN is online now BRN  United States
diyAudio Member
 
Join Date: Sep 2006
I just dropped the price on this great preamp.
  Reply With Quote
Old 22nd October 2017, 08:19 PM   #5
BRN is online now BRN  United States
diyAudio Member
 
Join Date: Sep 2006
I dropped the price.
  Reply With Quote

Reply


FS: Keantoken's simple error-correction super bufferHide 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
The Kuartlotron - keantoken's simple error-correction superbuffer keantoken Analog Line Level 928 13th June 2018 10:44 AM
Error Correction? famousmockingbird Tubes / Valves 5 23rd June 2015 08:22 PM
Simple Super Shunt and Simple Super Shunt w/CCS vs. JSR03/05 (and other series regs) hollowman Power Supplies 45 5th July 2013 10:50 PM
Simple error correction amp ? forr Solid State 8 26th September 2009 07:05 AM


New To Site? Need Help?

All times are GMT. The time now is 12:22 AM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.00%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki