RME DPS-2 Linear Super Low Noise Dual Audio Power Supply
RME - DPS-2, Linear Super Low Noise Dual Audio Power Supply with µFilter and Sensor Technology
Linear Super Low Noise Dual Audio Power Supply
RME - DPS-2
Featuring µFilter and Sensor TechnologyThe RME DPS-2 is an exceptional linear power supply that doesn't just include impressive technical data but also a wide range of unique and highly useful features. For example, the compact device features two differently filtered outputs. The housing and front panel of the DPS-2 are based around the ADI-2 series, accommodating RME's innovative circuitry design on just a half rack width.
At a glance
• Linear Super Low Noise Dual Audio Power Supply with µFilter and Sensor Technology
• Two differently filtered outputs
• Multi-stage passive and active filtering
• Highly efficient active filters
• No interference noise
• Half rack width
Two Outputs
HF- and DC-filter on mains sideThe output Linear is a traditional DC output but is equipped with multi-stage passive and active filtering including a 30,000 μF capacitor bank, a ferrite choke as well as an active output filter with a hybrid voltage regulator.
The second output is based around RME's proprietary μFilter technology. Here the signal from the pre-filtered Linear output is also processed by highly efficient active filters to achieve an exceptionally clean DC output with just a few µV (micro-volts) noise. In addition the output has sensor technology, which measures and adapts the output voltage directly at the DC connector of the supplied DC cable. Two DC Sensor connection cable with lockable and non-lockable DC plug 2.1 x 5.5 mm, (1 m) are included.
Resulting in the the output impedance and load regulation being extremely low, providing a clean output voltage of +12.0 V at 2.5 A load, completely avoiding any load-dependent voltage drops. Please note: only one output is usable at a time.
Hum-free Operation
Ultimate noise-free PerformanceThe additional use of both a 2-stage HF filter and DC filter on the AC mains side allows the DPS-2 to deliver optimum performance without interference noise. This is also ensured by the 60 VA audio toroidal transformer with additional isolation winding and magnetic tape shielding, guaranteeing absolutely hum- and noise-free operation in any situation.
If necessary the GND lift switch can be used to disconnect DC ground from PE (protective earth) to eliminate noise caused by ground loops. In this case safety is not affected since the primary part and the housing stay firmly connected to PE of the power inlet. In addition the DPS-2 comes with a ground terminal screw connection to earth other devices or to use an earthing other than PE for the audio power supply.
Status Display via Multicolour Front LEDs
LED AutoDark modeThe DPS-2 features two status LEDs on the front to give you a quick overview of the operating modes and error conditions (power, thermal and power overload, undervoltage, short, active output). A recessed push switch on the front panel enables the unique AutoDark mode with LEDs only lit on error states and shortly during power up.
Another unique feature is the 24-page manual, which shows the technical data in detail using many measured values, illustrated with measurement diagrams. It also contains background information on linear and switching power supplies.
The Tech Spec
| Features | Specification |
|---|---|
| AC Mains (Primary) | |
| Standard input voltage | 115 V or 230 V, set by internal connector |
| Input voltage range | 95 V – 130 V or 200 V – 260 V |
| Power consumption idle | 1 watt |
| Power consumption typical, 2 A load on Linear | 38.5 watts |
| Power consumption typical, 2 A load on μFilter | 39.8 watts |
| Fuses for 230 V: 2 x 250 V / 0.63 A slow blow, size | 5x20 mm |
| Fuses for 115 V: 2 x 250 V / 1.2 A slow blow, size | 5x20 mm |
| DC Linear – Secondary | |
| Maximum output voltage | 12.2 V @ 0 A |
| Minimum output voltage | 11.5 V @ 3 A |
| Continuous output current | 2.5 A |
| Continuous output power | 30 watts |
| Maximum output current | 4 A |
| Short circuit current | <0.1 A |
| Noise @ 1 A, AES17 | 30 μV, 3 μV A-weighted |
| Noise @ 1 A, 100 kHz bandwidth | 30 μV, 4 μV A-weighted |
| Noise @ 2 A, AES17 | 111 μV, 14 μV A-weighted |
| Noise @ 2 A, 100 kHz bandwidth | 111 μV, 14 μV A-weighted |
| Output impedance including cable | 0.22 Ohm |
| Load Regulation (0/1/2 A) | Overload protection |
| Overheating protection | > 80 °C (176 °F) |
| Undervoltage detection | < 9.5 V |
| DC μFilter - Secondary | |
| Output voltage | 12.0 V |
| Continuous output current | 2.5 A |
| Continuous output power | 30 watts |
| Maximum output current | 3.5 A |
| Short circuit current | <0.1 A |
| Noise @ 0 - 3 A, AES17 | < 2 μV, < 1 μV A-weighted |
| Noise @ 0 - 3 A, 100 kHz bandwidth | <3 μV, < 2 μV A-weighted |
| Output impedance including cable | 0.012 ohm |
| Load Regulation (0/1/2 A) | 0.20 % |
| Overload protection | > 3.2 A |
| Overheating protection | > 80 °C (176 °F) |
| Undervoltage detection | < 9.5 V |
| General | |
| Dimensions (WxHxD) | 130 x 44 x 205 mm 5.1“ x 1.7“ x 8.1“ |
| Weight | 1.89 kg 4.17 lbs |
| Temperature range | +5 °C up to +40° Celsius (41 °F up to 112 °F) |
| Relative humidity | < 75%, not condensing |
| Package Contents | DPS-2 DC Sensor connection cable with lockable DC plug 2.1x5.5 mm, 1 m (3.3 ft) DC Sensor connection cable with DC plug 2.1x5.5 mm, 1 m (3.3 ft) Manual IEC Power cable, 1.5 m (4.9 ft) |
