PSU-A - Class A 3 Pins Discrete PSU High Speed & Low Noise#
- 3 pins design, easy replace the 3 pins PSU-IC and normal PSU.
- Output Current 70mA or 140mA (Users select, default setting at 70mA).
- Temperature Range: 0°C to 85°C
- Installation :L38 x W40 x H30 (mm, without feet)
- Quality Components: Custom order NOVER (England brand), WIMA capacitor, DALE Resistor.
- Extra thick gold plated PCB
- Applied: For CDP, DAC, Preamp and power amp gain stages modify. ( Can't working for laser and motors drive circuits in CDP)
The Class A design always is the best design in audio field. #
The class A PSU has some limits, the heat is a little hotter than the normal PSU, the output current has limit, the Line Regulation and Load Regulation not as good as the normal PSU, because it is non-feedback design, but these all are not the points, it have the most neutral sound reproduce keep most DIYers like to applied it in their gears.
The Class A PSU has very high input impedance and low output impedance can avoid power disturbs. It works at class A state, has the fastest output current response.
Note:
- The heat sinks have to be connected to GND, so take care while install in the gear.
- The adjustment resistor can adjust the output voltage, if you have not enough experiences, don't adjust it, we have adjust to standard output before shipment.
- Connect by wrong will shatter the PSU or the gear.
- While the PSU working will have some heat .
- There is better connect the input and GND, check the output voltage if correct as you expect then connect to the circuit.
- Even 70MA already suit the circuit require, but users still can setting to 140 MA see which one sound better for personal taste.
- Take care the input voltage if make it working over load.
What's different between PSU-A and PSU-L?#
1. The PSU-A is a class A design PSU, it suit the small current request circuits, like DA chip, OPAs, DAC output stages , preamp gain stage.
The PSU-L is the linear design, it can output large current less limit.
2. In sound, the PSU-A have more neutral, more extend , blacker background.
Note: This is a class A PSU, it's current output has limit at 70/140 mA. If you want large power supply, please choose PSU-L#
Specification#
| Specs (Model) |
Output voltage (VDC) |
Input voltage (VDC) |
| PSU-A3V3 |
+3.3V |
+5 to +12V |
| PSU-A5V |
+5V |
+7 to +15V |
| PSU-A9V |
+9V |
+11 to +20V |
| PSU-A12V |
+12V |
+14 to +22V |
| PSU-A15V |
+15V |
+17 to +25V |
| PSU-A18V |
+18V |
+20 to +28V |
| PSU-A24V |
+24V |
+26 to +35V |
| PSU-AN3V3 |
-3.3V |
-5 to -12V |
| PSU-AN5V |
-5V |
-7 to -15V |
| PSU-AN9V |
-9V |
-11 to -20V |
| PSU-AN12V |
-12V |
-14 to -22V |
| PSU-AN15V |
-15V |
-17 to -25V |
| PSU-AN18V |
-18V |
-20 to -30V |
| PSU-AN24V |
-24V |
-26 to -35V |
| Custom order |
3.3V to 50V (+/-) |
<250 mA <60V DC input. |