Weiss DAC501 Digital Analogue Converter

Weiss DAC501 Digital Analogue Converter
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£7,200.00
(£6,000.00 Exc. VAT)
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Why buy from us?

Weiss Engineering DAC 501 dsp d/a converter and network renderer

The DAC501 / DAC502 are our new state of the art D/A Converters with an unprecedented level of sophistication and versatility.  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.

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.

Shipping typically 2-3 days

Mechanics

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.

Synchronization

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
• USB

Accepted formats: PCM 44.1kHz up to 384 kHz, DSD 64x / 128x. 
Future formats can be accommodated for via software updates.

Signal Processing
 
The DAC50x has a digital signal processing chip built in (DSP). The following DSP algorithms are currently implemented or implemented soon:

• Room Equalizer - to suppress room modes for a decent bass reproduction.
• Creative Equalizer - a tone control with low boost/cut, high boost/cut and mid boost/cut. Very useful to correct those recordings which do not quite sound right.
• De-Essing - the automatic removal of overly bright sibilance from human voices. The sibilance effect can be more or less pronounced depending on your speakers or room acoustics.
• Constant Volume - adjusts the audio volume (loudness) to a constant value across all tracks played. Useful for "party mode" when the volume control should stay untouched.
• Vinyl Emulation - get that special sonic character of a record player based playback chain. We also employ an emulation of the DMM-CD procedure offered by the Stockfisch label.
• Crosstalk Cancelling (XTC) - for the playback of dummy head recordings or live recordings via speakers for an incredible live sensation. Dummy head recordings usually are listened to via headphones because they only work properly if the left channel goes to the left ear only and the right channel to the right ear only.

With speakers this is difficult to achieve as the left channel goes to the left and the right ear. But with some clever signal processing of the speaker channels is possible to suppress the crosstalk, i.e. the audio going from the left speaker to the right ear and vice versa. If that works properly then the recording sounds as if one would be in the space where the recording has taken place.

All the reverberation and 3D representation of the sound sources is there.(For speaker based playback only.)

• Out Of Head Localization algorithm - tries to get the music "out of your head" when listening via headphones. The goal is to achieve a similar listening sensation as one gets when listening via speakers. (For headphone based playback only.)
 
The following DSP algorithms are considered for implementation:

• Roon streaming.
• MQA decoding.
• Airplay.

Converters

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

• Analogue 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 pre-sets.
 
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.

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: 0.5 VA max.

Size DAC501: Depth: 30 cm, Width: 18,8 cm, Height: 6,6 cm, Height with feet: 7,2 cm
Size DAC502: Depth: 30 cm, Width: 45 cm, Height: 6,6 cm, Height including feet: 7,4 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)
  • (1) USB type B connector
  • (1) RJ45 Ethernet connector

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 Maximum input word-length: 24 Bits

Digital Outputs: none

Analogue Outputs: (2) XLR connectors (hot on pin 2), short circuit proof output circuitry, output impedance tbd Ω (2) RCA connectors, short circuit proof output circuitry, outputimpedance tbd Ω

Headphone Output: (1) stereo 1/4-inch jack connector, DC coupled, short circuit proof output circuitry

  • D/A Converter chip
  • Over-sampling multi-bit sigma-delta converter
  • Two converters per audio channel

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

Crosstalk: Better than 120 dB, 20 Hz…20 kHz

UK Delivery

  • FREE delivery via DPD Local By 12pm on orders to value over £300, including one hour delivery window service 'Predict & Follow My Parcel'.
  • Royal Mail Special Delivery By 1pm costs between £5.00 - £10.00 on orders to value under £300, dependent on weight.
  • Saturday or Sunday delivery available upon request for supplemental charge.

EU Delivery

  • £25 delivery charge 'Flat Fee' via DHL Europe by Road service (3-5 days) which provides comprehensive tracking of shipments online.
  • £60 delivery charge 'Flat Fee' via DHL Europe by Air service  (1-2 days) which provides comprehensive tracking of shipments online.

USA & Canada Delivery

  • Services based on your order being shipped to the U.S. and Canada are calculated as follows:
    £100 delivery charge 'Flat Fee' via DHL international 'Day Definite' service per parcel.
    Receiver is responsible for the payment of local Duties and Taxes.

Exceptions

  • Not all products are available for order into Europe, USA & Canada

WARRANTY

  • Full manufacturer's warranty on all new purchases. Standard warranty is typically 2 years with some goods coming with 6 years manufacturer's warranty.
  • Goods purchased in UK and EU are covered by the Consumer Contracts Regulations.

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