Frequency Board for Accuphase F-20 F-25 with custom frequency option
Specifications
| All Returns Accepted | ReturnsNotAccepted |
| Type | F-25 F-20 |
| Compatible Model | accuphase |
| Country/Region Of Manufacture | Norway |
These are non-OEM frequency cards for Accuphase F-20 and F-25 electronic filters made with custom component values for frequencies not available in the standard original range. For boards with standard frequency range: 70, 100, 130, 180, 250, 300, 350, 500, 650, 800, 1000, 1200, 1800, 2500, 3500, 5000, 7000, 8000, 10000 and 12500Hz, see my listing with lower price here: https://www.ebay.com/itm/176074665720?hash=item28fede2ef8:g:XS8AAOSw6eVky1t1 The frequency boards work in exactly the same way as the original ones with 12dB, 18dB and 24dB slope. The filter is built with C0G quality capacitors from Murata and with 0.5% thin film resistors from the Susumu RR series. Guaranteed original high quality low noise and low distortion parts By using a database of the values on many original filters and simulation of the entire circuit, I can guarantee that the frequency response is correct no matter what frequency you want. See example of the image showing the curve of 70Hz filter simulated and actual measured response (measured with R&S Audio Analyzer)
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