So I bought this linear power supply to power my Philips Little Giant DAC. It looks like a good one. What do you'all think.
https://www.ebay.com/itm/353532995691
https://www.ebay.com/itm/353532995691
Please check PE connection. I see such PSUs and not many of them have PE connected and/or - referenced to PE. This can cause discharge of leakage current which translates to voltage when plugging in devices making them kaputt. Either PE is floating which is forbidden in the EU when using 3 pin connectors or there is a direct connection between - and PE (also not OK). The third popular solution is to connect only - to PE and leave the casing floating 🙂 Since they noticed we pay attention the common solution is to have a 3 pin IEC connector and a PCB track going to it....ending in a PCB pad with nothing connected to it. Apparently PE is a difficult item for Chinese designers.
PSUs with transformers* have leakage which is not a serious issue when things are designed according old fashioned rules. The price is incredibly low, I can not even assemble a 3 pin regulator based PSU for that amount. Just a quality transformer will cost around 30 Euro. These are cheap (cost effective in Newspeak) but one will need to check if they are safe and suitable for the purpose. Don't assume all is good, you get what you pay for.
* another popular mistake is to use the wrong transformer for the output voltage as the customer can choose various output voltages. Also check this when you receive it.
PSUs with transformers* have leakage which is not a serious issue when things are designed according old fashioned rules. The price is incredibly low, I can not even assemble a 3 pin regulator based PSU for that amount. Just a quality transformer will cost around 30 Euro. These are cheap (cost effective in Newspeak) but one will need to check if they are safe and suitable for the purpose. Don't assume all is good, you get what you pay for.
* another popular mistake is to use the wrong transformer for the output voltage as the customer can choose various output voltages. Also check this when you receive it.
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Think of input voltage to the regulator minus output voltage times the current. That will tell you the loss to heat. Burning in might just be the right term.
Reducing 12V to 5V is a good example of suboptimal engineering or simply put: bad choice.
The better choice would have been to choose the 5V version for 5V devices. Complicated.
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Well, I cancelled the order for the iPurifier last night, so I won't be needing the 5v mod.
I decided to by a better coax cable instead.
I decided to by a better coax cable instead.
I just bought this cable. It's special, so have a look.
https://m.aliexpress.us/item/3256803849795351.html
https://m.aliexpress.us/item/3256803849795351.html
It looks special. Empty page here.
Western products are most of the time better quality but look less sexy.
Western products are most of the time better quality but look less sexy.
If you are trying to reach the address with a regular computer, that may be why.
Anyway, it has an oil-impregnated screen, and a dual copper foil shield. Here's the ad copy:
Very unique structure with thick OCC condutor + Oiled OFC screen + Dual Copper foil
Similar to Oil capacitor sound effect, Audience will be poisoned
Gorgeous refined& smooth sounding,Slightly enhanced mid-bass with great atmosphere
Anyway, it has an oil-impregnated screen, and a dual copper foil shield. Here's the ad copy:
Very unique structure with thick OCC condutor + Oiled OFC screen + Dual Copper foil
Similar to Oil capacitor sound effect, Audience will be poisoned
Gorgeous refined& smooth sounding,Slightly enhanced mid-bass with great atmosphere
Well, I actually have the same cable minus the oil impregnation. It is a good clean one, with decent soundstage and imaging. But the gorgeous refined & smooth sounding, Slightly enhanced mid-bass with great atmosphere is what I am looking to add.
Don’t expect magic from cables and also don’t expect the marketing words to be truth.
After decades in audio it occurs to me that many of those busy with details often have the most imperfect setups. Not that I mean you but beware not to believe too much in words. Better focus on electronic/electric basic rules.
After decades in audio it occurs to me that many of those busy with details often have the most imperfect setups. Not that I mean you but beware not to believe too much in words. Better focus on electronic/electric basic rules.
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I don't blindly buy in to ad hype. But my experience with oil caps tells me that this is something that will improve things in the direction I am looking for, along with the previously mentioned power supply.
Besides, my current cable is 9 feet long (originally for my computer). The cable I bought is 3 feet long making it more suitable for connecting to my transport.
Besides, my current cable is 9 feet long (originally for my computer). The cable I bought is 3 feet long making it more suitable for connecting to my transport.
If he is into "oil caps" (I take the liberty to assume paper in oil dielectricum) then maybe a worse DAC might be called for. Frequency response of -3dB at 12kHz and something to limit slew rate and drive of the output, like a 12AX7 tube output stage. Anode, not cathode follower.
My DAC has so far proven to be the right one. I am just maximizing it's performance abilities. I am currently powering it with a wall-wart from a harddrive, which is plugged in to a good line filter.
I could buy a Cardas Parsec digital cable if I need to.
My current system is comprised of Accupase amps and phonostage, a Micro-Seiki turntable and tonearm with an Air Tight cartridge. My Philips Little Giant is my only DAC currently. My speakers are made by Acoustat.
My headphone rig consists of a custom-made single ended David Yee tube amp, driving a set of JVC HA-D990 headphones.
I could buy a Cardas Parsec digital cable if I need to.
My current system is comprised of Accupase amps and phonostage, a Micro-Seiki turntable and tonearm with an Air Tight cartridge. My Philips Little Giant is my only DAC currently. My speakers are made by Acoustat.
My headphone rig consists of a custom-made single ended David Yee tube amp, driving a set of JVC HA-D990 headphones.