RME DPS-2 Linear Super Low Noise Dual Audio Power Supply

The RME DPS-2 Linear Super Low Noise Dual Audio Power Supply boasts not only impressive technical data but also a wide range of unique and highly useful features. For instance, the compact device features two differently filtered outputs. The housing and front panel of the DPS-2 are based on the ADI-2 series, accommodating RME's innovative circuitry design on only half rack width.

The 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 chokes as well as an active output filter with a hybrid voltage regulator.

The second output is based on 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 & non-lockable DC plug 2.1 x 5.5 mm, (1 m) are included.

As a result, the output impedance and load regulation are extremely low, thus ensuring 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.

The additional use of both a 2-stage HF filter and DC filter on the AC mains side enables 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.

The DPS-2 features two status LEDs on the front to provide 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.

Key Features

• Dual Filtered Outputs: Provides both traditional and ultra-clean (μFilter) DC outputs for optimal device compatibility and noise reduction.
  
• Ultra-Low Noise Performance: Exceptional μFilter technology achieves minimal noise levels (microvolts) for pristine audio quality.
  
• Sensor Technology: Maintains consistent voltage output with minimal drop even under load, thanks to real-time DC connector monitoring.
  
• Compact Half-Rack Design: Saves valuable studio space while accommodating advanced circuitry.
  
• Exceptional Power Filtering: Dual-stage AC filtering and a high-quality toroidal transformer minimize interference for clean power delivery.
  
• Low Noise Operation: Guaranteed hum-free performance for critical audio applications.

Technical Specifications

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)
3.63 %
Overload protection
> 3.2 A
Overheating protection
> 80 Degrees C (176 Degrees 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 Degrees C (176 Degrees 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 Degrees C up to +40 Degrees Celsius (41 Degrees F up to 112 Degrees 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)