Benchmark DAC2 family modification
  • Benchmark DAC2 family modification
  • External Linear Power Supply
  • Connection of DAC to Ext Linear Power Supply
  • Benchmark DAC2 family modification

Benchmark DAC2 family modification

Our modification improves the performance drastically of the Benchmark DAC2 family of DACs, including DAC2-HGC / DAC2D / DAC2L,.  We focus on reducing the jitter levels of the DAC and reducing the digital and analog background noise levels. After the mods, inner details and harmonic resolution, previously submerged by the background noise levels, will emerge.  The real potential of the Benchmark DAC2 and its variants will be realized.

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  • Ultima FEMTO Clock


    Ultima FEMTO Clock

    Currently in its 5th generation, our Ultima FEMTO clock now uses Crystek oscillators which are certified to be less than 82 femto seconds in jitter (in some cases and models, less than 50 femto seconds jitter). 

    The DC power supply powering the oscillator is also extremely important to the overall performance of an audio clock.  We implemented a 2-stage design using our Ultima DC voltage regulator circuit, with high quality components, to ensure that the oscillator works in a noise-free environment. For the very best performance we use a silver plated, military grade 50-ohms clock digital signal hook-up cable for our installation.  A low jitter, low noise clock will ensure less DAC timing conversion errors, reducing distortion and lowering the noise floor.  This will bring forth more low level signals and details.  The sound will be much more analog in its feel and texture. 

    Note that we will only allow installation in our workshop in Singapore and the clock is not for kit / general sales.  Our clock is only used for our own modifications.

  • Ultima Voltage Regulator


    Ultima Voltage Regulator

    Currently in its 4th generation, our Ultima voltage regulator is the finest of its kind in the market.  Using high quality industrial grade components, the regulator’s control element and its voltage reference is powered by its own low noise voltage output.

    With an optimised discrete design , it provides ultimate low noise, high speed DC power performance to your electrical components.

    The use of our Ultima voltage regulators in place of standard regulators will enable fine, low level musical details, previously hidden and distorted by background noise and slow regulation speed, to emerge. The music will be less harsh sounding, with much more details than before. The sound will be much more analog and natural, with instruments gaining their true tone and timbre.

    Note that we will only allow installation of our modules and regulators in our workshop in Singapore and the regulators are not for kit / general sales.  Our regulators are only used for our own modifications. 

  • External AC to DC Linear Power Supply


    External AC to DC Linear Power Supply

    An external power supply for source equipment (phono stage, DAC, Preamp etc) has always been the hallmark for high end equipment. 

    To push the envelope of performance for some of our DAC mods (Mytek / Benchmark DAC etc), we have developed a special external linear power supply for them.  By removing the original AC to DC power supply within the small confined of these extremely well designed DAC, a large amount of noise within the DAC is removed, improving their performance drastically.

    Our external power supply consists of two power supplies within the unit.  These two are totally separated, with dedicated transformer running each power supply.  Our proprietary Balanced DC Power Supply design, which combines BOTH a balanced AC power conditioner and low noise DC power supply (see our Balanced DC power supply for more details) is used here. In addition, the DC regulator designed employed here is fully discrete, low noise, and with no negative feedback.  This ensures that a very low noise, ripple-free power is supplied to the DAC, improving its performance even more.  One power supply is dedicated for the critical analog DAC output stage and the other is dedicated for the digital processing stage.  This ensures maximum isolation between analog and digital signals. 

    The installation and use of our External Power Supply will lift your DAC to the real high-end performance.  It drastically lowers the noise floor within your DAC.  All spectrum of your DAC’s performance, including resolution, sound staging, speed, PRAT, natural harmonics, will be enhanced by a wide margin.  You have not heard what your DAC can really do until you use our external power supply.

  • Good Quality Component


    Good Quality Component

    For our modifications and upgrade modules, we ensure that very high quality electronic components are used.

    Our modifications philosophy and methodology has always been based on the systematic and natural reduction of noise within your equipment, so that the true potential of your equipment can be realised.  We do not believe in adding more colours to change the sound of your equipment.  The initial “WOW” factor will be there, but ultimately it will fade and leaves you unsatisfied.  You will always be looking for the next component to colour and compensate for the unnatural sound with such a vicious cycle approach. 

    As such, the choice of our components is based on a neutral sound that fit our philosophy and methodology.  These are components that are tested and proven in our hundreds of modifications done.  They are extremely high quality, industrial grade components that will last for a long time.  The sum of their effects will be many more than singular, highly coloured components.

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Change the simple oscillator circuit that is used for the ESS9018 Sabre DAC with our Ultima FEMTO low jitter clock then replaced the critical components to better specifications and higher grade parts. The analog output circuit is also modified for better sonic. Use our Ultima low noise discrete voltage regulators to power the critical analog circuits and Sabre 9018. Removed SMPS and the DC-DC convertors and replaced by our External Power Supply. There will be two DC power cables from the external power supply to the Benchmark DAC.  Neutrik’s  speakON and powerCON connectors, which are true low impedance and high current connectors will be used.

Pricing & Specs

Benchmark DAC2 Premium mod service

  • Replace current clock with Ultima Femto low jitter clock.
  • Replace with Ultima low noise voltage regulators.  Panasonic FC caps used as filter caps for the board.
  • Bypass each opamps power supply with Rubycon ZL capacitors.
  • Analog stage mods with higher grade opamps.
  • Chassis damping to reduce vibration. Remove internal power supply
  • Install cables into DAC2 for external power supply
  • Include Plixir External Power Supply ; Weight : 3.0kg ; Dimension (in mm): 220 x 50 x 225
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