Best DIY preamp - diyAudio
Go Back   Home > Forums > Source & Line > Digital Line Level

Digital Line Level DACs, Digital Crossovers, Equalizers, etc.

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 11th April 2010, 05:39 AM   #1
3GGG is offline 3GGG  Australia
diyAudio Member
 
Join Date: Mar 2010
Default Best DIY preamp

I am looking for a preamp, either a kit or PCB with list of parts.
It needs volume control and source inputs. Looking to build the best quality preamp to avoid upgradeitis at a later stage!
Any links or advice would be appreciated, after weeks looking online i havent progressed with a decision.
  Reply With Quote
Old 11th April 2010, 07:11 AM   #2
diyAudio Member
 
Join Date: Sep 2009
Location: Aarhus, Denmark
The RTP3D: Vacuum State - High End Hifi Equipment

My last preamp in this life.
__________________
"People can't do what they should: room acoustics and speaker design - so they do what they can: new amps, cables etc." (Lidia)
  Reply With Quote
Old 11th April 2010, 07:21 AM   #3
Electrons are yellow and more is better!
diyAudio Member
 
peranders's Avatar
 
Join Date: Apr 2002
Location: Göteborg, Sweden
Blog Entries: 4
Nelson Pass B1 could possibly be something. Nelson Pass has pcb's.
Pass DIY: Store
http://passdiy.com/pdf/B1%20Buffer%20Preamp.pdf

Nice pics
__________________
/Per-Anders (my first name) or P-A as my friends call me
Super Regulator SSR03 Group buy
  Reply With Quote
Old 11th April 2010, 08:09 AM   #4
Luke is offline Luke  New Zealand
diyAudio Member
 
Join Date: Sep 2001
Location: Wellington NZ
Send a message via AIM to Luke
The Aikido is one Im hinking of building at some stage. He offers boards or kits.

GlassWare Line Stage & Headphone Amplifiers Kits and PCBs
__________________
If you give a man a fish he will eat for a day. But if you teach a man to fish he will buy an ugly hat. And if you talk about fish to a starving man then you are a consultant. Dilbert
  Reply With Quote
Old 11th April 2010, 09:57 AM   #5
diyAudio Member
 
Rudi_Ratlos's Avatar
 
Join Date: Jun 2009
Location: Hamburg / Germany
Here is my recommendation:

Click the image to open in full size.

Its author is Stefan Dreyer, a German.

At the heart of Stefan's control-board (Srefan also offers a relay-board and an extension control-board if you want to listen to 5.1 or 7.1 sound)
is a PIC18F4550 µProcessor designed by the "Microchip" company.

The PIC18F4550 is an 8-Bit RISC-processor with an USB-interface.

The µP does the following:

- it selects one of 8 to 16 sources connected to the relay-board(s)

- the selected source is pre-amplified by a socketed - OP-AMP (for example: OPA2132, AD823AN, ...)

- the pre-amplified source is fed to a BurrBrown PGA2311 attenuator

- the PIC18F4550 drives a 2 x 16 Lines LCD-display, so you can see what you are doing

- each selected source can be individually programmed, concerning the pre-amplificating level, the name of the source, ...

- during operation Source Select, Attenuation, Mute, ... can be remotely controlled via INFRARED

- the PIC18F4550 comes pre-programmed with the current Firmware

- Stefan offers firmware-updates to the PIC18F4550, downloadable via USB (his Pre-AMP is detected as an USB-device in WINDOWS)

- His boards are perfectly manufactured, double-sided, contacted-through...

This is what you can order from him:

Click the image to open in full size.

His Pre-AMP is presented in detail on his homepage: PicPlayer

The documentation also contains the complete schematics and the BoM.
The documentation is written in German.

If you have any questions I will try and answer or contact Stefan directly.

Best regards - Rudi_Ratlos

Click the image to open in full size.

Last edited by Rudi_Ratlos; 11th April 2010 at 10:02 AM.
  Reply With Quote
Old 11th April 2010, 04:02 PM   #6
RIP
 
Join Date: Oct 2005
Location: Central Florida
Quote:
Originally Posted by Luke View Post
The Aikido is one Im hinking of building at some stage. He offers boards or kits.

GlassWare Line Stage & Headphone Amplifiers Kits and PCBs
Yeah, man! Just put one together, pretty sweet.
  Reply With Quote
Old 12th April 2010, 04:11 AM   #7
diyAudio Member
 
Join Date: Apr 2010
Quote:
Originally Posted by Luke View Post
The Aikido is one Im hinking of building at some stage. He offers boards or kits.

GlassWare Line Stage & Headphone Amplifiers Kits and PCBs

Will the phono pre-amps work with moving coil cartridges? I could not tell from the info on the site.
  Reply With Quote
Old 12th April 2010, 03:55 PM   #8
diyAudio Member
 
Join Date: Jan 2006
Location: Ireland
The DCB1 (see the group-buy threads) is the best preamp I have heard - and that includes an aikido. However this is a buffer, so unity gain, so your system needs to be able to live with that.

Fran
  Reply With Quote
Old 12th April 2010, 08:53 PM   #9
toufu is offline toufu  United States
diyAudio Member
 
Join Date: Jun 2008
Location: San Francisco
Quote:
Originally Posted by Fasterdamnit View Post
Will the phono pre-amps work with moving coil cartridges? I could not tell from the info on the site.

No, needs a step up transformer.
  Reply With Quote
Old 12th April 2010, 09:21 PM   #10
diyAudio Member
 
Join Date: Apr 2010
My response that I found the info never posted. Sorry. I have an Audio Technica AT650 Xformer.
  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
DIY mic preamp possible ? Buzzy Solid State 11 20th October 2009 02:19 PM
DIY PreAmp Kit? Dougie085 Digital Source 0 29th June 2007 05:57 PM
Best DIY Preamp for Bass? DolbyR Instruments and Amps 3 2nd February 2007 07:43 AM
DIY 5.1 Preamp bytefx Digital Source 4 7th February 2002 02:25 PM


New To Site? Need Help?

All times are GMT. The time now is 04:43 AM.


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