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

Group Buys Members group buys

Simple High Performance DC Coupled Class A HPA with sub PPM THD
Simple High Performance DC Coupled Class A HPA with sub PPM THD
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 5th July 2018, 05:06 PM   #111
xrk971 is online now xrk971  United States
Got Foam?
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Metro DC area
Simple High Performance DC Coupled Class A HPA with sub PPM THD
GB Status Update

Quote:
Badboygolf16v - 2 sets, Paid
Dabore84 - 2 sets, Invoice sent
funch - 1 set, Paid
kartk - 1 set, need PayPal address
Yourownbuzz - 1 set plus Aksa Lender Pre TH and 2SA1837's, Invoice sent
BabyDontHertzMe - 1 set, need PayPal address
Stellarelephant - 1 set, Paid
*passive420 - 1 set, Paid
Pinnocchio - 1 set, Invoice sent
vvs7 - 2 sets, Paid
Gwrskien - 1 set, need PayPal address
*Ernesternest - 1 set, Paid
jwjarch - 2 sets, Paid
ermine22 - 3 sets, Paid
Morde - 1 set, Paid
S610adam - 2 sets, need PayPal address
pstech - 2 sets, need PayPal address
*Silasmellor - 1 set, paid
ravid - 1 set, Paid
*Malvin 1 set, Paid
__________________
XRKaudio https://www.etsy.com/shop/XRKAudio

Last edited by xrk971; 5th July 2018 at 05:22 PM.
  Reply With Quote
Old 6th July 2018, 01:17 PM   #112
xrk971 is online now xrk971  United States
Got Foam?
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Metro DC area
Simple High Performance DC Coupled Class A HPA with sub PPM THD
GB status update

Quote:
Badboygolf16v - 2 sets, Paid
*Dabore84 - 2 sets, Paid
funch - 1 set, Paid
*kartk - 1 set, Invoice sent
Yourownbuzz - 1 set plus Aksa Lender Pre TH and 2SA1837's, Invoice sent
BabyDontHertzMe - 1 set, need PayPal address
Stellarelephant - 1 set, Paid
passive420 - 1 set, Paid
*Pinnocchio - 1 set, Paid
vvs7 - 2 sets, Paid
*Gwrskien - 1 set, Paid
Ernesternest - 1 set, Paid
jwjarch - 2 sets, Paid
ermine22 - 3 sets, Paid
Morde - 1 set, Paid
*S610adam - 2 sets, Invoice Sent
pstech - 2 sets, need PayPal address
Silasmellor - 1 set, paid
ravid - 1 set, Paid
*Malvin 1 set, Invoice Sent
__________________
XRKaudio https://www.etsy.com/shop/XRKAudio

Last edited by xrk971; 6th July 2018 at 01:23 PM.
  Reply With Quote
Old 6th July 2018, 01:20 PM   #113
pinnocchio is offline pinnocchio  Canada
diyAudio Member
 
pinnocchio's Avatar
 
Join Date: Sep 2010
Location: Montreal
Invoice paid yesterday

Thanks
Do
__________________
PREAMPs : AMB α10 + USSPA | LDR3x + USSPA | AMPs: AMB β24 | USSA5 | TGM8 | VZ Audio NS OPS | FC-100 | Modulus-686 |
DACs : Mirand AK4490 + Discrete Output | Speakers : Troels Gravesen ATS-4 | Sagwee LT V3 |
  Reply With Quote
Old 6th July 2018, 01:29 PM   #114
yourownbuzz is offline yourownbuzz  Australia
diyAudio Member
 
Join Date: Mar 2017
I've paid but paypal said payment pending so not sure what's going on..
  Reply With Quote
Old 6th July 2018, 01:57 PM   #115
xrk971 is online now xrk971  United States
Got Foam?
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Metro DC area
Simple High Performance DC Coupled Class A HPA with sub PPM THD
Thanks for the update, gentlemen.

Quote:
I've paid but paypal said payment pending so not sure what's going on..
I see that too - let's give it a few days to clear.
__________________
XRKaudio https://www.etsy.com/shop/XRKAudio
  Reply With Quote
Old 6th July 2018, 10:25 PM   #116
xrk971 is online now xrk971  United States
Got Foam?
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Metro DC area
Simple High Performance DC Coupled Class A HPA with sub PPM THD
GB status update

Quote:
Badboygolf16v - 2 sets, Paid
Dabore84 - 2 sets, Paid
funch - 1 set, Paid
*kartk - 1 set, Paid
*Yourownbuzz - 1 set plus Aksa Lender Pre TH and 2SA1837's, Paid
BabyDontHertzMe - 1 set, need PayPal address
Stellarelephant - 1 set, Paid
passive420 - 1 set, Paid
Pinnocchio - 1 set, Paid
vvs7 - 2 sets, Paid
Gwrskien - 1 set, Paid
Ernesternest - 1 set, Paid
jwjarch - 2 sets, Paid
ermine22 - 3 sets, Paid
Morde - 1 set, Paid
*S610adam - 2 sets, Paid
pstech - 2 sets, need PayPal address
Silasmellor - 1 set, paid
ravid - 1 set, Paid
*Malvin 1 set, Invoice Sent
Thank you to everyone for quickly paying. I am ready to place order now for boards.
__________________
XRKaudio https://www.etsy.com/shop/XRKAudio
  Reply With Quote
Old 7th July 2018, 09:00 AM   #117
xrk971 is online now xrk971  United States
Got Foam?
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Metro DC area
Simple High Performance DC Coupled Class A HPA with sub PPM THD
GB Status Update

Quote:
Badboygolf16v - 2 sets, Paid
Dabore84 - 2 sets, Paid
funch - 1 set, Paid
kartk - 1 set, Paid
Yourownbuzz - 1 set plus Aksa Lender Pre TH and 2SA1837's, Paid
BabyDontHertzMe - 1 set, need PayPal address
Stellarelephant - 1 set, Paid
passive420 - 1 set, Paid
Pinnocchio - 1 set, Paid
vvs7 - 2 sets, Paid
Gwrskien - 1 set, Paid
Ernesternest - 1 set, Paid
jwjarch - 2 sets, Paid
ermine22 - 3 sets, Paid
Morde - 1 set, Paid
S610adam - 2 sets, Paid
pstech - 2 sets, need PayPal address
Silasmellor - 1 set, paid
ravid - 1 set, Paid
*Malvin 1 set, Paid
__________________
XRKaudio https://www.etsy.com/shop/XRKAudio
  Reply With Quote
Old 8th July 2018, 04:18 AM   #118
xrk971 is online now xrk971  United States
Got Foam?
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Metro DC area
Simple High Performance DC Coupled Class A HPA with sub PPM THD
Order for PCB's has just been placed. 2mm FRP, 2oz copper, gold ENIG finish, blue solder mask just like shown below:

Click the image to open in full size.
__________________
XRKaudio https://www.etsy.com/shop/XRKAudio
  Reply With Quote
Old 9th July 2018, 07:01 AM   #119
silasmellor is online now silasmellor  Denmark
diyAudio Member
 
Join Date: Nov 2016
Location: Denmark
Simple High Performance DC Coupled Class A HPA with sub PPM THD
X, apologies if this was already covered previously, but can you say a bit more about the cross feed?

I am toying with the idea of running double duty, preamp with Headphone out. How would you use the creed in that case?
  Reply With Quote
Old 9th July 2018, 07:30 AM   #120
xrk971 is online now xrk971  United States
Got Foam?
diyAudio Member
 
xrk971's Avatar
 
Join Date: Oct 2012
Location: Metro DC area
Simple High Performance DC Coupled Class A HPA with sub PPM THD
The Xfeed is based on the modified Danyuk design and has a defeat switch, so if in preamp mode, just defeat the Xfeed, and in HPA mode you have a choice of it in or out.

Here is the original (active) Danyuk crossfeed.
(PDF) Adjustable crossfeed circuit for headphones
But since we have a high impedance input with JFETs, the crossfeed can be driven passively before the pot.
__________________
XRKaudio https://www.etsy.com/shop/XRKAudio
  Reply With Quote

Reply


Simple High Performance DC Coupled Class A HPA with sub PPM THDHide 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
Ultra-high performance, yet rather simple - hybrid and more! vzaichenko Solid State 998 13th June 2018 11:12 AM
High Performance Class A Current Feeback Headphone Amplifier monty78pig Headphone Systems 14 12th November 2015 01:01 PM
Simple High-Performance DAC psk Digital Line Level 17 8th September 2014 04:41 AM
simple, high performance amp using DRV134? Fast Eddie D Headphone Systems 6 6th May 2014 05:17 AM
Huginn, High performance, Class A, Lateral FET headphone amplifier Neutrality Headphone Systems 11 7th November 2013 07:29 PM


New To Site? Need Help?

All times are GMT. The time now is 01:11 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 14.29%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
Copyright ©1999-2019 diyAudio
Wiki