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Oppo BD players - Improvements/modifications - models: 103/103D, 105/105D


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- Replacing the original SMPS with the linear power module (internal mounted). This mod it include:

Double AC filters for internal transformer as for the original toroid (analogue power).

R core transformer for best main AC noise isolation.

Most advanced regulators on market today for the best noise figures (output ripple & harmonics level under 3µV, at full load - 5A on 5v rail).

Remote current sensing design for best regulation at the cable connection endpoint

Extra HF filtering cell on cable connection end.

Solid filtering capacity values for both power rails (more than 100 000µF on 5v rail).

For implementing the internal LPM it is recommended removing the multichannel board for best cooling and ventilation of the entire device, including main processor.

 

- Improving completely the original analogue power stage on stereo board,

as the filtering caps on main board (DC/DC converters - PSUs). This mod it include:

Schottky all rectifier diodes, solid filtering capacities, improving the existing +/- 12v regulators.

Adding pre regulator for 5v analogue power rail, replacing all of the stock regulators for DAC chip, with ultra-low noise ones.

Improving the existing regulator for DAC`s analogue stage, improving filtering capacities for all DAC power rails.

Installing my special designed DAC PSU for the analogue stage of the DAC chip,

and dismissing the original regulator on board - very recommended for best ever results!

This mod option it include also improving cooling for DAC chip.

Eventual dismissing of the headphone stage if unused, to unload the main regulators and minimise the overall inside heat dissipation.

(Sending of the main & stereo boards it is necessary for implementing this mod)

 

- Implementing the output module. This mod it include:

Fully differential signal processing design (based on OPA1632), using dedicated ultra-low noise regulators (TPS) for each opamp chip.

Configuring DAC chip for 2+2 output.

Special AC coupling caps configuration, for best signal transparency.

The output module is designed as a detachable approach, which it allow the user to experiment with different output circuits versions, without modifying any further on the stereo board.

A motherboard for this module, it is soldered on the stereo board, and it give access to the DAC output signals, to the +/-power lines, and to the AC coupled final outputs.

The output module experimenting board it is also available if necessary.

(Sending of the stereo boards it is necessary for implementing this mod)

 

- Implementing the battery powered clock board. This mod it have two versions and it include:

Centralized powered clock system for the whole device. Damping mechanical mounting for clock board, to prevent any vibrations/alteration of the clock signals.

1-Epson SAW 108Mhz clock for DAC, 27Mhz and 20Mhz Abracon oscillators for main processor, and for HDMI chip, as a standard option.

2-Unified clock oscillator (SAW 216Mhz) for DAC and main processor, with high quality frequency divider+ 20Mhz Abracon oscillator for HDMI chip.

(Sending of the main & stereo boards it is necessary for implementing this mod)

 

- Improvements for the asynchronous USB interface. This mod include:

Better filtering caps for the on board power rails. Replacing of the stock on board oscillators with NDK ones.

Advanced shielding and grounding.

 

- Improving the data cables shielding, as cooling for main chips, and advanced grounding are included in overall final price.

Please take contact for the customized list of modifications, or if you may have questions about.

ModsOppo.jpg

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I am interested in a quote for your LPM for my Oppo 105D in USD including shipping.

 

Thank you

 

Ricky

 

- Replacing the original SMPS with the linear power module (internal mounted). This mod it include:

Double AC filters for internal transformer as for the original toroid (analogue power).

R core transformer for best main AC noise isolation.

Most advanced regulators on market today for the best noise figures (output ripple & harmonics level under 3µV, at full load - 5A on 5v rail).

Remote current sensing design for best regulation at the cable connection endpoint

Extra HF filtering cell on cable connection end.

Solid filtering capacity values for both power rails (more than 100 000µF on 5v rail).

For implementing the internal LPM it is recommended removing the multichannel board for best cooling and ventilation of the entire device, including main processor.

 

- Improving completely the original analogue power stage on stereo board,

as the filtering caps on main board (DC/DC converters - PSUs). This mod it include:

Schottky all rectifier diodes, solid filtering capacities, improving the existing +/- 12v regulators.

Adding pre regulator for 5v analogue power rail, replacing all of the stock regulators for DAC chip, with ultra-low noise ones.

Improving the existing regulator for DAC`s analogue stage, improving filtering capacities for all DAC power rails.

Installing my special designed DAC PSU for the analogue stage of the DAC chip,

and dismissing the original regulator on board - very recommended for best ever results!

This mod option it include also improving cooling for DAC chip.

Eventual dismissing of the headphone stage if unused, to unload the main regulators and minimise the overall inside heat dissipation.

(Sending of the main & stereo boards it is necessary for implementing this mod)

 

- Implementing the output module. This mod it include:

Fully differential signal processing design (based on OPA1632), using dedicated ultra-low noise regulators (TPS) for each opamp chip.

Configuring DAC chip for 2+2 output.

Special AC coupling caps configuration, for best signal transparency.

The output module is designed as a detachable approach, which it allow the user to experiment with different output circuits versions, without modifying any further on the stereo board.

A motherboard for this module, it is soldered on the stereo board, and it give access to the DAC output signals, to the +/-power lines, and to the AC coupled final outputs.

The output module experimenting board it is also available if necessary.

(Sending of the stereo boards it is necessary for implementing this mod)

 

- Implementing the battery powered clock board. This mod it have two versions and it include:

Centralized powered clock system for the whole device. Damping mechanical mounting for clock board, to prevent any vibrations/alteration of the clock signals.

1-Epson SAW 108Mhz clock for DAC, 27Mhz and 20Mhz Abracon oscillators for main processor, and for HDMI chip, as a standard option.

2-Unified clock oscillator (SAW 216Mhz) for DAC and main processor, with high quality frequency divider+ 20Mhz Abracon oscillator for HDMI chip.

(Sending of the main & stereo boards it is necessary for implementing this mod)

 

- Improvements for the asynchronous USB interface. This mod include:

Better filtering caps for the on board power rails. Replacing of the stock on board oscillators with NDK ones.

Advanced shielding and grounding.

 

- Improving the data cables shielding, as cooling for main chips, and advanced grounding are included in overall final price.

Please take contact for the customized list of modifications, or if you may have questions about.

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Hi jedank

 

Thanks for your interest. PM sendt. Else you can see here some of my latest modded devices...

105D model it can benefit now of a single/unified master clock circuit (based on Epson SAW 108Mhz, powered by battery), which it provide clock signals for the whole device, including DAC.

Oppo 95.jpg

105Dmods.jpg

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