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For serious audio work, your monitoring chain must provide the most accurate representation possible of your audio material. As Weiss Engineering’s most advanced and precise digital-to-analog converter, the DAC1 is the ultimate in transparency and resolution. With its four digital stereo inputs and several industry-first solutions in its circuit design, this unit is trusted by some of the world’s most respected audio engineers.
UNCOMPROMISING
Weiss Engineering has spearheaded digital audio for over four decades, with a long row of innovations and industry-first products. All that experience has gone into creating the most accurate and transparent digital-to-analog converter imaginable. The DAC1 marks the pinnacle of our converter designs with several unique solutions, and no corners cut. Should the DAC1’s standard digital input configuration not suit your needs, several options are available upon request
UNIQUE DIGITAL SOLUTIONS
The DAC1 MK3 employs Weiss Engineering’s unique correlation technique. This involves utilizing two of the latest DAC chips on each audio channel, so there is a total of four DAC chips in the unit. Even if the highest quality chips are in use, this solution improves distortion and noise figures compared to using single DAC chips. Several signal re-clocking schemes are combined for extremely high jitter attenuation, making the DAC1 virtually immune to jitter over a very wide bandwidth, down to subsonic frequencies.
DISCRETE CLASS A ANALOG
The DAC1 MK3 uses no less than eight of Weiss Engineering’s own OP1-BPs, which is likely the best operational amplifier available. The discrete Class A outputs have a virtually zero ohms output impedance but are still able to drive large loads without stability problems. Output levels can be set between −infinity and +27 dBu. The outputs are symmetrical but do not employ any sound degrading servo mechanisms. For asymmetrical operation, only one leg of the XLR connector (plus ground) is used.
DIGITAL INPUTS
In its standard configuration, the DAC1 has three stereo AES/EBU inputs on XLR connectors, and one on optical TOSLINK. The inputs are switchable from the front panel, allowing for easy switching between digital sound sources. Each XLR input is actively routed to a corresponding XLR digital output, allowing for monitoring at multiple stages in a digital studio setup.
APPLICATIONS
The DAC1 is commonly used as the first step in a studio’s monitoring chain — feeding the studio speakers an analog output that accurately represents the audio on the digital medium. It is also common to use the DAC1 for incorporating analog equipment into an otherwise digital signal chain when mixing or mastering audio.
DAC1 MK2 VS MK3
While the DAC1 MK3 is a superior design from a technical standpoint, some users subjectively prefer the sound of the DAC1 MK2. Therefore, we continue to offer the MK2 version. Any previous DAC1 version can be upgraded to MK3. The output gain trimming also works differently between the two versions, with the MK3 being somewhat easier to set.
Digital Inputs
- Three AES/EBU stereo digital inputs on XLR connectors.
- One TOSLINK (optical) stereo digital input.
- The accepted sampling frequencies are 44.1, 48, 88.2, 96, 176.4, and 192 kHz.
- AES/EBU signals in single wire or dual wire formats can be used.
- Upon request, any version of the DAC1 can be configured with Thunderbolt, USB, Firewire, or ST type glass fiber digital inputs.
- The USB input interface also adds DSD to PCM conversion capability.
Digital Outputs
- Each AES/EBU input is actively routed to a corresponding XLR digital output, allowing for monitoring at multiple stages in a digital studio setup.
Analog Outputs
- Two analog outputs (L/R) on XLR connectors.
- Output levels can be set between −infinity and +27 dBu.
- The outputs are symmetrical but do not have any sound degrading servo mechanisms built in. For asymmetrical operation, only one leg of the XLR connector (plus ground) is used.
Measurements
- Frequency response: ±0.25 dB 20 Hz-20 kHz (44.1 and 48 kHz sampling frequencies), ±0.75 dB 20 kHz-40 kHz (88.2, 96, 176.4 and 192 kHz sampling frequencies).
- THD+N at 1 kHz: -112 dB at -3 dBFS input level, -115 dB at 0 dBFS input level.
- SNR at -40 dBFS input: 129 dB unweighted, relative to full scale output. 132 dB A-weighted, relative to full scale output.
- Crosstalk: Less than -110 dB, 0 Hz –20 kHz.
- CMRR: Higher than 90dB at 1 kHz, higher than 80dB at 20 kHz, higher than 60dB at 20 Hz.
