Coris

View Classified LPS and upgrades for Oppo/Panasonic/Pioneer products/players Linear power supply for all Oppo players models as for Sonica DAC, for Panasonic UB9000, and for Pioneer LX500. Many other upgrades available for the mentioned above devices, and more. The LPS is mainly DIY installable, but for implementing other upgrades, sending the whole device or boards is necessary. Please contact for more details and customised upgrade list. The price mentioned here is quite approximative (it depends on LPS version, and the device to be mounted into). Seller Coris Date 02/25/21 Price 500.00 USD Category Power Supplies / Power Products  

My latest version full upgrade for UDP205...

Showing here my fully upgraded Sonica. New designed, and fully linear power supply, clock system battery powered, improved DAC power system, and the fully differential (OPA1632 based) output module for both RCA and XLR out (the two available DAC output pairs are tied together). Also some improvements on USB input board. The new clock system it use two Epson oscillators (27Mhz for main processor, and a SAW type 100Mhz oscillator for DAC chip. Very surprisingly the clock system upgrade it is decisive for the final touch in sound quality improvement. I did it this clock replacement in the end of the whole improvement process, after all upgrades it were in place. Lifting in sound quality after replacing the DAC oscillator, it is obvious. Some words about my linear PSU. It include (beside the main power regulator), four ultra low noise TPS7A regulators, as follow: two for the +/- power rails for analogue circuits, and two pre regulators for DAC power rails. Very large filter capacities are also on board for digital section regulator, as for DAC pre regulators. I used the original HF main AC filtering cell, and I added (on LPS board) a DC blocking filter. The transformer winding designated to the digital section is double shielded, and grounded. The very low amount heat it is dissipated through the chassis cover (thermal connections by thermal pads). How it sound all this? Over all expectations... P.S. The picture hereby it was taken with the device in function. Therefore are placed the small heatsinks on the LPS regulators. New and improved LPS version available.

Well, my last version LPS is here (see picture)... It include now in addition to the HF filter cell for AC main input, also the DC blocking filter. Available now with supplementary linear power line, for circuitry inside main board (responsable for optical drive data processing), replacing an on board SMPS. The LPS it come now ready for powering (battery charging) my clock board (centralised clock system, battery powered). The kit include an inaudible ventilation fan, powered from LPS, from a low noise adjustable regulator. The last version LPS (115v/230v AC) is compatible/customised for Oppo 93/95, 103/105, 203/205, 101. LPS designed for Oppo Sonica DAC is also available.

I have better and far more complete solutions for Oppo improvements...

My main idea for improving of these Oppo devices, is to improve the core/base of the systems, but not only the analogue output stage of the DAC... I may say that my improvements are the most complete, targeting key parts of the system, while keeping the final price at a quite low level (comparing with other mod providers). The power system in a device it have a crucial impact over the final signal quality, no matter it is video or audio, and over the whole device functionality. Also the same level impact it have the quality of the clock system. At least the clock system is strongly affected by the same (core) power system... My clocking approach is based on battery power. After these power systems improvements are implemented (including DAC chip power system), then one can do something and much more effective about the post DAC analogue signal processing, to increase even more the final audio quality... These (pictured hereby) are my main improvement stages: linear power, clock board and final analogue audio stage.

My LPM (linear power module/PSU) it will provide linear power to the digital stage/board of the both models 203 and 205. This new LPM is already in production now, and it will come out even before the 205 model it will be launched. As soon as i will have assembled this new LPM, I will present it here. Mainly there is about the same approach as for 105 models, but adapted to the different voltage, and internal dimensions of these new models. A second important improvement for the new Oppo UDP series, it will be for the clock system. As usual Oppo use in its design cheap resonators to clock the main chips. My approach it consist in a centralised clock signal issued by a main SAW oscillator, as all system powered by battery. It still to be appreciated improvements for DAC and post DAC analog signal processing (stereo/multichannel stages), after the device it will be launched and more design details it will be known. There is a important issue about the multichannel stage: the improvement of this stage/board it become quite expensive, as all the 8 channels it have to be improved, in addition to the multichannel DAC and its power/clock system.

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.

OK, acknowledged...

Improved Oppo BDT-101CI...

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For Oppo BDT-101CI...