FS For Sale - 'Riegstra' MM phono amplifier DIY project.
Unfinished project. Please check photos. This is the so-called 'Riegstra' design as published in Elektor and AudioXpress. Advantage of the circuit is that small and even 'loud' clicks are 'eliminated' by the first opamp circuitry, the clicks are less noticeable. Riegstra from the Netherlands build this circuitry and found out by coincidence the specialty of this circuit.
In fact two cheap standard 'Audiowind' stereo MM boards are used for the project, these boards are transferred to mono, this to fit the 'Riegstra' circuitry.
Included:
1. 2x MM mono boards
2. 1x power supply board, discrete design, low-noise, if I am correct this is the 'STAX' design (as can be bought on Ebay).
3. 'double opamp' PCB to single opamp use.
4. box with parts, including Vishay 128 SAL-RPM as coupling caps (very close to Black Gate).
5. aluminium case.
6. separate AC power supply using power transformer, including connector (black plastic box in photo).
7. transport box.
8. all documentation in PDF format (very well documented).
9. included 4x AD845 opamps (not clear if these can be used in this circuitry). Any opamp like a single opamp as the NE5534, OPA134 and for example OPA627 can be used (4 single opamps are needed to make the project work).
10. project to be finished by you, no help or support is guaranteed, it is you to make it up and running.
Price unknown, but will make it interesting for you. You may send your price idea on this.
Unfinished project. Please check photos. This is the so-called 'Riegstra' design as published in Elektor and AudioXpress. Advantage of the circuit is that small and even 'loud' clicks are 'eliminated' by the first opamp circuitry, the clicks are less noticeable. Riegstra from the Netherlands build this circuitry and found out by coincidence the specialty of this circuit.
In fact two cheap standard 'Audiowind' stereo MM boards are used for the project, these boards are transferred to mono, this to fit the 'Riegstra' circuitry.
Included:
1. 2x MM mono boards
2. 1x power supply board, discrete design, low-noise, if I am correct this is the 'STAX' design (as can be bought on Ebay).
3. 'double opamp' PCB to single opamp use.
4. box with parts, including Vishay 128 SAL-RPM as coupling caps (very close to Black Gate).
5. aluminium case.
6. separate AC power supply using power transformer, including connector (black plastic box in photo).
7. transport box.
8. all documentation in PDF format (very well documented).
9. included 4x AD845 opamps (not clear if these can be used in this circuitry). Any opamp like a single opamp as the NE5534, OPA134 and for example OPA627 can be used (4 single opamps are needed to make the project work).
10. project to be finished by you, no help or support is guaranteed, it is you to make it up and running.
Price unknown, but will make it interesting for you. You may send your price idea on this.
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