Check the listing for details. STUDER 900 R-Core Linear Power Supply For Preamplifier/DAC DC 5--24V (Optional). Condition: New. Listed at 52.99 USD. Introduction: The circuit of this product is based on the Swiss STUDER power circuit.Ultra-low noise fever linear power supply, with excellent wiring and good linear components, the output accuracy is very high, ultra-low ripple, and the actual listening experience is better than most Class A power supplies. The maximum current of this device is 2.5A. If your device exceeds 2.5A, it will not be able to start. Please pay attention to the use situation. It is only suitable for commonly used preamplifiers and DAC decoders below 2.5A. Please see the voltage/current description below for the current corresponding to the specific voltage. Different voltage and current are different. The materials used are very sophisticated, high-speed and low-dropout 4A Schottky rectifier diode, the output tube is ON tube king 15034, TL072 dual op amp, NOVER 6800uF/35V main filter capacitor. Integrated PCB design with output overcurrent and overload function to improve power supply safety. Parameter: Input voltage: AC 115V or 230V (Optional) Output voltage/current: (We have the following output DC voltage versions to choose from). ◆ DC 5V / 2.5A(Max) ◆ DC 9V / 2.5A (Max) ◆ DC 12V / 2.5A (Max) ◆ DC 15V / 1.8A (Max) ◆ DC 18V / 1.6A (Max) ◆ DC 19V / 1.5A (Max) ◆ DC 24V / 1.25A (Max) GX16-2 PIN socket Polarity: 1+ (positive polarity), 2- (negative polarity) DC plug polarity: internal + (positive polarity), external-(negative polarity) DC Plug size: 5.5*2.1mm (If you need other DC plug sizes, please contact us) Size: 102mm * 55mm * 213mm (W * H * D) Weight: About 1.7 KG Package includes: STUDER 900 linear power supply X1 GX16-2 PIN to 5.5*2.1mm DC output cable X1 NOTE: We do not include an AC input cable.