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RME launches DPS-2 (Linear Power Supply) and LNI-2 DC (DC Filter & Stabilizer)

24th April 2024 4:16 pm

Supercharge your ADI-2 Series devices with the new linear power supply and DC filter from RME Audio.

RME has announced the release of two new products: the DPS-2 and LNI-2 DC. Developed largely in response to requests from ADI-2 users for a linear power supply option, the DPS-2 is stylised to sit perfectly alongside RME’s popular ADI-2 DAC FS, ADI-2 Pro FS R and ADI-2/ Pro SE.

Meanwhile, the LNI-2 DC serves as a DC filter engineered to effectively isolate the DC signal, ensuring flawless power delivery to any RME Audio device*.

* Note: not recommended for use with the ADI-2/4 Pro SE.

RME DPS-2 | “Super-Low-Noise” Linear Audio Power Supply

The new DPS-2 is an exceptional linear power supply that 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 DPS-2 (left) is a linear power supply designed for RME Audio devices such as the ADI-2 Series and ADI-2/4 Pro SE (right).


Two Outputs

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 choke 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. 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.

Hum-free Operation

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) for eliminating humming or buzzing noises. 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.


Quick Status Overview

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). Via a recessed push switch on the front panel users can enable an AutoDark mode with LEDs only lit on power on and errors.

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 DPS-2 is available now.

Find out more about the RME DPS-2 Dual Linear Power Supply


RME LNI-2 DC | Active DC Filter with Galvanic Isolation

RME presents the LNI-2 DC, an active DC filter in a compact and portable design. The LNI-2 DC provides isolation, regulation and filtering of output signals from any 12 volt DC power source, enabling a remarkable improvement in DC voltage stability while providing an ultra-clean 12V power source. This results in an enhanced audio signal and sound quality avoiding humming, buzzing and other noises that can be caused by power supplies or dirty mains power.



Galvanic Isolation

The LNI-2 DC is based on two key features: galvanic isolation and RME’s exclusive μFilter. The galvanic isolation significantly reduces the leakage current usually associated with switching power supplies. At the same time the capacitive coupling between input and output is reduced from typically 1 nF (nano-farad) to less than 35 pF (pico-farad) to prevent noise from the leakage current.


RME’s μFilter

The μFilter (micron filter) of the LNI-2 DC consists of a discrete Ultra Low Noise linear regulator with extremely low noise output of only a few μV (micro-volt), soft start, thermal overload, short circuit protection and sensor technology.

The LNI-2 DC handles power sources from 9-18V DC (input) and provides a fixed, perfect voltage of 12.0 V at 2 A at the lockable output socket. This is ensured by the µFilter’s integrated sensor technology, which checks and compares the output voltage directly at the DC connector of the supplied 4-wire cable, thus completely avoiding any load-dependent voltage drops.

Two status LED at the top of the unit signal existing input and output voltage and overload. As further special feature the ground of the DC output can optionally be connected to PE, ground or other devices ground via a ground terminal screw to solve ground cabling issues.

Another unique feature is the 17-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 LNI-2 DC is available now.

Find out more about the RME LNI-2 DC (Low-noise isolating DC Filter)



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