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.
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 Pass B1 could possibly be something. Nelson Pass has pcb's.
Pass DIY: Store
http://passdiy.com/pdf/B1 Buffer Preamp.pdf
Nice pics
Pass DIY: Store
http://passdiy.com/pdf/B1 Buffer Preamp.pdf
Nice pics
The Aikido is one Im hinking of building at some stage. He offers boards or kits.
GlassWare Line Stage & Headphone Amplifiers Kits and PCBs
GlassWare Line Stage & Headphone Amplifiers Kits and PCBs
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
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
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Will the phono pre-amps work with moving coil cartridges? I could not tell from the info on the site.
From a quick search this looks promising.
How is the new version of the board coming along?
Dodd Audio has just released a kit version of their tube buffer preamp for $350. I own a Pass B1 but every commercial review I've come across on the Dodd preamps rank them as some of the best you can buy. Dodd is offering the kit at a discount on AudioCircle. I wants one bad.
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An excellent set for a pre-amp. Good choices. I too recently went for the DCB1 & Lighter note boards. I have had a B1 classic for over a year now and it rocks!
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