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Weiss Engineering DAC502

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Roon-Ready, two-channel, digital-to-analog converter with volume control

The Weiss Engineering DAC502 is company's new state of the art D/A Converter with an unprecedented level of sophistication and versatily.

The DAC502 uses a larger frame but else sports the same features as the DAC501. Except for an an additional 4 pin headphone socket at the back of the unit.


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With the DAC50x we are creating a new paradigm for what used to be a black box device. A typical D/A Converter is a "set and forget" device. Not so with the DAC50x. It adds a number of interesting signal processing features and sports a variety of digital inputs. Balanced, unbalanced and headphone outputs are provided.

Weiss Engineering has a 30 year history in D/A Converter design. In that time span we have learned a thing or two about converter design. The DAC50x is the essence of our experiences. DAC501 and DAC502 are Roon Ready.


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Features & Specs

The DAC50x uses a stainless steel chassis with a solid 10 mm aluminium front plate.

Power Supply

A powerful non-switching power supply is used. All sensitive voltages have their own regulators which are separated between left and right channels. The result is an analog output free of “digital noise” and channel crosstalk. The power switch activates a semiconductor relay which only switches on or off at zero crossings of the mains voltage. This assures a glitch free power switching. The two mains transformers are toroidal types. Mains voltage selection is done automatically by measuring the mains voltage before power is applied to the rest of the electronics.


An internal high precision / low jitter clock generator is responsible for clocking the D/A converter section. The sampling frequency of that generator is fixed at about 195kHz. The input signals are converted to the 195kHz sampling frequency for optimal signal quality. This scheme also helps significantly in reducing any jitter related effects. All standard sampling frequencies up to 384 kHz plus DSD x64 and x128 are supported.

Digital Inputs

There are a total of five inputs:

AES/EBU or S/PDIF via XLR, Toslink and RCA sockets
UPnP / DLNA via Ethernet
Roon Ready
Accepted formats: PCM 44.1kHz up to 384 kHz, DSD 64x / 128x.

Future formats can be accommodated for via software updates.


Two of the latest 32 bit D/A Converter chips are used. Two D/A conversion channels are used per audio channel, resulting in exceptional performance specifications.

Analog Outputs

Line out unbalanced on RCA connector.
Line out balanced on XLR connector.
Headphone out on 1/4" Jack Analogue.
For the DAC502: Addtional headphone output on a 4 pin XLR connector.
Discrete output stages for both line and headphone outputs are employed.
The output levels can be set in a coarse manner with 4 steps to adapt for the amplifier or headphone connected. The levels can be set independently for line and headphone outputs.
No sound degrading servo mechanisms are used.

Front panel controls

A rotary encoder knob for changing parameters and for powering the unit on/off.
A touch screen colour LCD display.
An 1/4 inch headphone socket.
An IR receiver.

Back panel elements

Analog outputs on XLR and RCA connectors.
Digital inputs on XLR, RCA, TOSLINK, USB, Ethernet connectors.
USB type A connector for various applications.
Mains connector with fuses.

IR Remote Control

Allows to control several functions of the DAC50x, namely:

The input selected for conversion.
The output type, level, muting, absolute polarity.
Power on/off.
DSP presets.

Web Interface

The DAC50x has a web interface for configuring it via a web browser. The following functions are accessible via the web interface:

Volume and Balance controls.
Input selection.
Output type.
DSP algorithms configuration.
DSP snapshots configuration.

Price: 9850 $ or €

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