DAC202 d/a converter

For a decent sonic quality when playing music from a computer, the D/A Converter is absolutely essential. This is where the DAC202 comes in. With Firewire, Thunderbolt and USB connectivity it can talk to all computers. The non-compromise DAC for computer playback as well as for stand-alone applications.

The DAC202 is a reference quality stereo Firewire and USB (optional) D/A Converter with infrared remote control. It supports all standard sampling frequencies including DSD64 (with the USB/DSD Version). A high quality headphone amplifier is built in. The output levels can be set in coarse steps in the analog domain and in addition in the digital domain with fine resolution. Thus the DAC202 acts as a pre-amplifier as well and can directly drive a power amplifier. The ideal device for a minimalistic computer playback system.

“I listened to the DAC202 last week and immediately ordered one. It is the best DAC I have ever heard. Period.”

A customer on www.computeraudiophile.com

 

“All things considered, the Weiss DAC202 is the best-sounding DAC I’ve had in my system. (…) I’ve never heard better sound through my audio system than when listening to hi-rez recordings through the DAC202.”

Jeff Fritz, UltraAudio

Main Features 

Mechanics
The DAC202 uses a stainless steel chassis with a solid 10 mm aluminium front plate.

 

Power Supply
Two toroidal transformers with linear voltage regulators are used.

 

Synchronization
An internal high precision/low jitter clock generator is responsible for clocking the audio section. The sampling frequency of that generator is switched automatically according to the sampling frequency of the track played. In addition there are word-clock input and output on BNC connectors for external synchronization purposes. All standard sampling frequencies up to 192 kHz are supported.

 

Digital Inputs
Digital Inputs are: AES/EBU or S/PDIF on XLR, RCA or TOSLINK, Firewire, USB optional, Thunderbolt via a Thunderbolt to Firewire adapter.

 

Digital Outputs
Digital Outputs are: AES/EBU on XLR or RCA, Firewire.

 

Analog Outputs
The main analog output is available on two stereo pairs of connectors, one on XLR one on RCA. The headphone output is available on a 1/4" Jack socket.

 

Converters
A modern, State Of The Art D/A Converter chip is employed. Two converters per audio channel are used to enhance the signal to noise ratio.

Level Control

The levels of the main outputs and the headphone output can be set independently in order to accommodate for the power amplifier and the headphone sensitivities. The main output level control employs four coarse settings via relays (analog domain), fine setting via the rotary encoder (digital domain). The level control can be defeated for the main output.

 

The headphone output level control employs four coarse settings via relays (analog domain, independent from the settings in the main output) to accommodate for all variants of headphones. Fine setting via the rotary encoder (digital domain).

 

Front panel controls
The LCD display conveys information on the sampling frequency, the input source selected, the audio level, absolute polarity and the over-sampling filter type selected. In a sub menu there are all other settings visible. A rotary encoder with push switch allows to select and change the menu items. The IR receiver, the standby LED and the headphone Jack socket make for the remaining front panel parts.

 

IR Remote control switches

  • Power on/off.
  • Volume up.
  • Volume down.
  • Input source selection.
  • DAC over-sampling filter type.
  • Mute.
  • Absolute polarity.

Back panel elements from left to right

  • XLR and RCA type analog output sockets. 
  • RCA type sockets for digital input and output.
  • XLR type sockets for digital input and output.
  • TOSLINK type socket for digital input (optical).
  • BNC type sockets for word-sync synchronization input and output.
  • Two Firewire 400 sockets.
  • IEC type mains receptacle.

 

Optional back panel elements
USB input if the USB option is installed. This input is mounted instead of the RCA S/PDIF output.


Special (software) features

  • Transparency check (allows to check for bit transparency of a playback chain).
  • Setting of the coarse output levels (analog domain), separate for the main output and the headphone output.
  • Dual/single wire selection for 176.4/192 kHz sampling frequency.
  • “Insert Mode” allows to loop in an external digital audio device (e.g. an equalizer) via the AES/EBU I/O on the XLR connectors.
  • Sampling frequency setting on the WSYNC I/O connectors in dual wire mode.
  • Display brightness.
Awards 

The DAC202 is a winner of the following awards: “The Absolute Sound Editor’s Choice Award” (USA), the “AEX Audio Excellence Award” (Japan), the “HiFi Review Product Of The Year” award (HongKong), the “Audiophile Product Of The Year” award (Thailand) and “The Absolute Sound Golden Ear Award” (USA).

The Absolute Sound Editor’s Choice AwardAEX Audio Excellence Award

 

The Absolute Sound Golden Ear Award

HiFi Review Product Of The YearAudiophile Product Of The Year

Reviews and user feedback 

Users

“I really appreciate the musicality of your DAC. I listen to it for hours each day, and those hours are far more enjoyable since your DAC entered my system!”

Tom Mornini, USA

 

“I listened to the DAC202 last week and immediately ordered one. It is the best DAC I have ever heard. Period.”

A customer on www.computeraudiophile.com

Press

“All things considered, the Weiss DAC202 is the best-sounding DAC I’ve had in my system. (…) I’ve never heard better sound through my audio system than when listening to Hi-Res recordings through the DAC202.”

Jeff Fritz, UltraAudio

Technical Data 

Dimensions (cm)

Power

  • Mains voltage: 100…120 V or 200…240 V

  • Fuse rating: 500 mA slow blow at 100…120 V, 250 mA slow blow at 200…240 V

  • Power consumption: 15 VA max.

  • Power consumption in standby: 1 VA max.

 

Size

  • Depth: 30 cm  
  • Width: 18,8 cm
  • Height: 6,6 cm
  • Height with feet: 7,2 cm

 

Size Remote

  • Depth: 2,1 cm  
  • Width: 4,5 cm
  • Height: 16,6 cm

 

Available Color
Silver, Black

 

Digital Inputs

  • (1) XLR connector
  • (1) RCA connector
  • (1) TOSLINK connector (optical)
  • (2) Firewire connectors
  • All inputs accept professional or consumer standard , i.e. accept AES/EBU or S/PDIF signals
• Sampling frequencies: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz or 192 kHz on any of the inputs, except TOSLINK input: 96 kHz maximum
  • The dual wire mode can be activated for sampling frequencies of 176.4 kHz or 192 kHz exclusively
  • 
Maximum input word-length: 24 Bits

 

Digital Outputs

  • (1) XLR connector
  • (1) RCA connector
  • (2) Firewire connectors
  • Professional channel status data on the XLR and RCA outputs
  • The dual wire mode can be activated for sampling frequencies of 176.4 kHz or 192 kHz exclusively

 

Analog Outputs

  • (2) XLR connectors (hot on pin 2), DC coupled, short circuit proof output circuitry, output impedance 44 Ω
  • (2) RCA connectors, DC coupled, short circuit proof output circuitry, output impedance 22 Ω

 

The output level is selectable via the LCD menu; four settings are provided as shown below:

 

XLR Output:

  • 8.15 Vrms +20.44 dBu with a 0 dBFS sine wave input
  • 
4.15 Vrms +14.57 dBu with a 0 dBFS sine wave input

  • 2.12 Vrms +7.74 dBu with a 0 dBFS sine wave input

  • 1.06 Vrms +2.72 dBu with a 0 dBFS sine wave input

 

These levels are achieved with a 0.0 dB setting for the level control on the LCD screen.

 

Suggested subsequent amplifier input impedances:


  • 8.15 Vrms setting: 500 Ω or higher

  • 4.15 Vrms setting: 300 Ω or higher

  • 2.12 Vrms setting: 150 Ω or higher

  • 1.06 Vrms setting: 70 Ω or higher


RCA Output:

  • 4.08 Vrms +14.42 dBu with a 0 dBFS sine wave input
  • 
2.08 Vrms +8.55 dBu with a 0 dBFS sine wave input

  • 1.06 Vrms +1.72 dBu with a 0 dBFS sine wave input

  • 0.53 Vrms −3.30 dBu with a 0 dBFS sine wave input

 

These levels are achieved with a 0.0 dB setting for the level control on the LCD screen.

 

Suggested subsequent amplifier input impedances:


  • 4.08 Vrms setting: 250 Ω or higher

  • 2.08 Vrms setting: 150 Ω or higher
  • 1.06 Vrms setting: 75 Ω or higher

  • 0.53 Vrms setting: 35 Ω or higher


Headphone Output:
(1) stereo 1/4-inch jack connector, DC coupled, short circuit proof output circuitry. The output level is selectable via the LCD menu; four level settings are provided as shown below:

 

  • 5.2 Vrms +16.53 dBu

  • 2.7 Vrms +10.84 dBu

  • 0.9 Vrms +1.30 dBu

  • 0.2 Vrms −11.77 dBu

These levels are achieved with a 0.0 dB setting for the level control on the LCD screen.

 

Suggested headphone impedances:

  • 5.2 Vrms setting: 100 Ω or higher with a 0 dBFS sine wave input

  • 2.7 Vrms setting: 50 Ω or higher with a 0 dBFS sine wave input

  • 0.9 Vrms setting: 16 Ω or higher with a 0 dBFS sine wave input

  • 0.2 Vrms setting: 4 Ω or higher with a 0 dBFS sine wave input

Synchronization

  • 
Via the input signal
  • Via the internal oscillator
  • Via a word-clock signal (TTL level/75 Ω) on the BNC input
  • Sampling frequencies supported: 44.1 kHz, 48 kHz, 88.2 kHz, 96 kHz, 176.4 kHz, 192 kHz
  • Word-clock output (TTL level/75 Ω) on BNC for synchronization of other equipment

 


D/A Converter chip


  • Over-sampling multi-bit sigma-delta converter
  • Two converters per audio channel

 

Measurements Main Output

The measurements below have been taken at the following conditions (unless noted otherwise): 1 kHz measurement frequency, maximum selectable output level, 192 kHz sampling frequency (Fs), 22 kHz measurement bandwidth, unweighted, 0 dBr equals the output level at 0 dBFS input.

 

Frequency Response:

  • 
Fs = 44.1 kHz, Filter A, 0 Hz…20 kHz: within ±0.25 dB
  • 
Fs = 44.1 kHz, Filter B, 0 Hz…20 kHz: within ±1.3 dB

  • Fs = 88.2 kHz, Filter A, 0 Hz…20 kHz: within ±0.25 dB

  • Fs = 88.2 kHz, Filter A, 0 Hz…40 kHz: within ±0.8 dB
  • 
Fs = 88.2 kHz, Filter B, 0 Hz…20 kHz: within ±0.25 dB

  • Fs = 88.2 kHz, Filter B, 0 Hz…40 kHz: within ±1.5 dB
  • 
Fs = 176.4 kHz, Filter A, 0 Hz…20 kHz: within ±0.25 dB

  • Fs = 176.4 kHz, Filter A, 0 Hz…40 kHz: within ±0.8 dB

  • Fs = 176.4 kHz, Filter A, 0 Hz…80 kHz: within ±2.5 dB

  • Fs = 176.4 kHz, Filter B, 0 Hz…20 kHz: within ±0.25 dB

  • Fs = 176.4 kHz, Filter B, 0 Hz…40 kHz: within ±0.8 dB

  • Fs = 176.4 kHz, Filter B, 0 Hz…80 kHz: within ±3.5 dB


Total Harmonic Distortion plus Noise (THD+N):

  • 116 dBr (0.00016 %) at −3 dBFS input level

  • 125 dBr (0.000056 %) at −40 dBFS input level

  • 125 dBr (0.000056 %) at −70 dBFS input level

 

Linearity:


At 0 dBFS to −120 dBFS input level: less than ±0.4 dB deviation from ideal

 

Spurious components (including harmonics):

  • 
At 0 dBFS input level, maximum output level, 1 kHz, all components at less than −120 dB

  • At 0 dBFS input level, maximum output level, 4 kHz, all components at less than −115 dB

 

Crosstalk:


Better than 120 dB, 20 Hz…20 kHz

 

Interchannel Phase Response:

  • 
±0.05° 20 Hz…20 kHz
  • ±0.30° 20 Hz…80 kHz

Measurements Headphone Output

The measurements below have been taken at the following conditions (unless noted otherwise): 1 kHz measurement frequency, maximum selectable output level, 192 kHz sampling frequency (Fs), 22 kHz measurement bandwidth, unweighted, 0 dBr equals the output level at 0 dBFS input.

 

Frequency Response:


  • Fs = 44.1kHz, Filter A, 0 Hz…20 kHz: within ±0.25 dB

  • Fs = 44.1kHz, Filter B, 0 Hz…20 kHz: within ±1.3 dB
  • 
Fs = 88.2kHz, Filter A, 0 Hz…20 kHz: within ±0.25 dB

  • Fs = 88.2kHz, Filter A, 0 Hz…40 kHz: within ±0.8 dB

  • Fs = 88.2kHz, Filter B, 0 Hz…20 kHz: within ±0.25 dB

  • Fs = 88.2kHz, Filter B, 0 Hz…40 kHz: within ±1.9 dB
  • 
Fs = 176.4 kHz, Filter A, 0 Hz…20 kHz: within ±0.25 dB

  • Fs = 176.4 kHz, Filter A, 0 Hz…40 kHz: within ±0.8 dB
  • 
Fs = 176.4 kHz, Filter A, 0 Hz…80 kHz: within ±2.6 dB

  • Fs = 176.4 kHz, Filter B, 0 Hz…20 kHz: within ±0.25 dB

  • Fs = 176.4 kHz, Filter B, 0 Hz…40 kHz: within ±0.8 dB
  • Fs = 176.4 kHz, Filter B, 0 Hz…80 kHz: within ±3.8 dB

 

Total Harmonic Distortion plus Noise (THD+N):

  • 
−115 dBr (0.00016 %) at −3 dBFS input level

  • −122 dBr (0.0000795 %) at −40 dBFS input level
  • −122 dBr (0.0000795 %) at −70 dBFS input level

 

Linearity:


At 0 dBFS to −120 dBFS input level: less than ±0.4 dB deviation from ideal

 

Spurious Components (including Harmonics):


  • At 0 dBFS input level, maximum output level, 100 kΩ load, 1 kHz, all components at less than −120 dB
  • 
At 0 dBFS input level, maximum output level, 600 Ω load, 1 kHz, all components at less than −120 dB

  • At 0 dBFS input level, maximum output level, 300 Ω load, 1 kHz, all components at less than −120 dB

  • At 0 dBFS input level, maximum output level, 100 kΩ load, 4 kHz, all components at less than −120 dB

  • At 0 dBFS input level, maximum output level, 600 Ω load, 4 kHz, all components at less than −120 dB

  • At 0 dBFS input level, maximum output level, 300 Ω load, 4 kHz, all components at less than −115 dB

 

Crosstalk:


Better than 110 dB, 20 Hz…20 kHz

 

Interchannel Phase Response:

  • 
±0.15° 20 Hz…20 kHz
  • ±0.50° 20 Hz…80 kHz

 

 

Configurations 

The DAC202 is an extremely versatile D/A Converter. It connects to virtually all digital audio sources, especially if the USB option is installed. The built in level control feature allows the DAC202 to work as a preamplifier. This leads to minimalistic setups like a computer, the DAC202, power amplifier, speakers. The less components there are in an audio playback system, the more transparent the whole chain is.

The DAC202 also allows to insert an external digital device like e.g. a digital equalizer into the signal chain.

Synchronization of the DAC202 is flexible too – it can run on an internally generated clock or can be synced from an external source.

 

With the optional USB/DSD interface the DAC202 also converts DSD signals fed via USB.

 

 

FAQ 

For Frequently Asked Questions and discussions about this and other products our new Forum will be available soon.


Thank you for your patience.

 

 

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