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Great info! Thanks for the explanation. At first it looked like a large film cap, but it was marked with an SMSL part number, with a 2W rating. Is it sealed in epoxy for ease of manufacture or to protect a proprietary design? When researching the DAC, I was very impressed that SMSL improved the Mark II from the first version by a significant margin, SINAD increasing from 101 to 114 dB, and increasing the price by only $10. Very satisfied with the purchase. Don't know why the manufacturer markings on the op amps have been removed. Previously a JRC version of the venerable 5532. The Topping E30 uses TI OPAs, better build quality and only $20 more. Probably a better value, but no USA seller stocks the unit.
Quote:Switching power supply has its own advantage that the high switching frequency is easy to filter. If you look at the inside picture of the SMSL Sanskrit you have (Amazon shows the picture), you can find the small dual rail DC-DC converter under the subtitle "Built-in high-performance power". The filter is LC filter. The silver color capacitors are aluminum hybrid polymer type. Some audiophiles use the brand name OS-CON to represent it. This type of electrolytic cap has very low ESR. They are not cheap for its small capacitance. The DC-DC converter is also used to create an isolated analog ground plane. The noisy digital ground plane is due to the fast parallel bus DRAM access. So, if the DC-DC converter's dual rail output has its own ground reference, the noise on the dual analog voltages will not be affected by noisy digital ground plane.
Great info! Thanks for the explanation. At first it looked like a large film cap, but it was marked with an SMSL part number, with a 2W rating. Is it sealed in epoxy for ease of manufacture or to protect a proprietary design? When researching the DAC, I was very impressed that SMSL improved the Mark II from the first version by a significant margin, SINAD increasing from 101 to 114 dB, and increasing the price by only $10. Very satisfied with the purchase. Don't know why the manufacturer markings on the op amps have been removed. Previously a JRC version of the venerable 5532. The Topping E30 uses TI OPAs, better build quality and only $20 more. Probably a better value, but no USA seller stocks the unit.
