Best DIY preamp

3GGG · 11th April 2010, 05:39 AM

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.

Nelson Bass · 11th April 2010, 07:11 AM

The RTP3D: Vacuum State - High End Hifi Equipment

My last preamp in this life.

peranders · 11th April 2010, 07:21 AM

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

Luke · 11th April 2010, 08:09 AM

The Aikido is one Im hinking of building at some stage. He offers boards or kits.

GlassWare Line Stage & Headphone Amplifiers Kits and PCBs

Rudi_Ratlos · 10:02 AM

Here is my recommendation:

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:

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

Bill Fuss · 11th April 2010, 04:02 PM

Quote:

Originally Posted by 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

Yeah, man! Just put one together, pretty sweet.

Fasterdamnit · 12th April 2010, 04:11 AM

Quote:

Originally Posted by 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

Will the phono pre-amps work with moving coil cartridges? I could not tell from the info on the site.

woodturner-fran · 12th April 2010, 03:55 PM

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

toufu · 12th April 2010, 08:53 PM

Quote:

Originally Posted by Fasterdamnit

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.

Fasterdamnit · 12th April 2010, 09:21 PM

My response that I found the info never posted. Sorry. I have an Audio Technica AT650 Xformer.

11th April 2010, 05:39 AM	#1
3GGG diyAudio Member Join Date: Mar 2010	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.

11th April 2010, 07:11 AM	#2
Nelson Bass diyAudio Member Join Date: Sep 2009 Location: Aarhus, Denmark	The RTP3D: Vacuum State - High End Hifi Equipment My last preamp in this life. __________________ Don't think you are - know you are!

11th April 2010, 07:21 AM	#3
peranders Electrons are yellow and more is better! diyAudio Member 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

11th April 2010, 08:09 AM	#4
Luke diyAudio Member Join Date: Sep 2001 Location: Wellington NZ	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

11th April 2010, 09:57 AM	#5
Rudi_Ratlos diyAudio Member Join Date: Jun 2009 Location: Hamburg / Germany	Here is my recommendation: 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: 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 Last edited by Rudi_Ratlos; 11th April 2010 at 10:02 AM.


	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

12th April 2010, 03:55 PM	#8
woodturner-fran 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 __________________ Visit www.tirnahifi.org!!

12th April 2010, 09:21 PM	#10
Fasterdamnit diyAudio Member Join Date: Apr 2010	My response that I found the info never posted. Sorry. I have an Audio Technica AT650 Xformer.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

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?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read