Popular Post rickca Posted July 29, 2018 Popular Post Share Posted July 29, 2018 HDPLEX has a new 200W LPS with some intriguing features. Price is $485 and pre-orders open on August 5. Specs and pictures are now up on the HDPLEX website. https://www.hdplex.com/hdplex-fanless-200w-linear-power-supply-for-pc-audio-and-ce-device.html The new version has two independent adjustable rails (3.3V/5V/7.5V/9V/12V/15V) at 2A. Each of these rails use 4 pieces of LT30451. There is also a 19V/10A rail and a 12V/10A rail. So this is a very versatile unit that can power a thin mini-ITX motherboard or NUC plus provide excellent regulation for a couple of items like a USB card, an SSD or accessories like an ISO REGEN or ultraRendu. Have a look at the Hardware Compatibility tab for more use cases. I'm currently using LPS-1.2 and Paul Hynes SR4 for my 5V/7V needs, but this is an economical, low footprint option that will be a really good solution for many users. It looks promising. I look forward to sharing listening impressions. Aberrant-Decoder and tapatrick 1 1 Pareto Audio AMD 7700 Server --> Berkeley Alpha USB --> Jeff Rowland Aeris --> Jeff Rowland 625 S2 --> Focal Utopia 3 Diablos with 2 x Focal Electra SW 1000 BE subs i7-6700K/Windows 10 --> EVGA Nu Audio Card --> Focal CMS50's Link to comment
rickca Posted July 30, 2018 Author Share Posted July 30, 2018 HPLEX has posted design diagrams for all 4 rails on the Specs tab. If you know your way around such documentation, I'd love to hear your observations. Pareto Audio AMD 7700 Server --> Berkeley Alpha USB --> Jeff Rowland Aeris --> Jeff Rowland 625 S2 --> Focal Utopia 3 Diablos with 2 x Focal Electra SW 1000 BE subs i7-6700K/Windows 10 --> EVGA Nu Audio Card --> Focal CMS50's Link to comment
zackthedog Posted July 31, 2018 Share Posted July 31, 2018 8 hours ago, rickca said: HPLEX has posted design diagrams for all 4 rails on the Specs tab. If you know your way around such documentation, I'd love to hear your observations. I take it that the added LT30451's are an improvement over the former design? Link to comment
rickca Posted July 31, 2018 Author Share Posted July 31, 2018 3 hours ago, zackthedog said: I take it that the added LT30451's are an improvement over the former design? That's right, likely a significant one. Pareto Audio AMD 7700 Server --> Berkeley Alpha USB --> Jeff Rowland Aeris --> Jeff Rowland 625 S2 --> Focal Utopia 3 Diablos with 2 x Focal Electra SW 1000 BE subs i7-6700K/Windows 10 --> EVGA Nu Audio Card --> Focal CMS50's Link to comment
wanta911 Posted July 31, 2018 Share Posted July 31, 2018 Looks good. I have 2 of the older 100w models that I use on my NAS & Router. I guess with the Uptone LPS 1.2 I would have to use the 12v or 19v outlets as the variable outlets max out at 2 amps so don't get to 36w? Link to comment
rickca Posted July 31, 2018 Author Share Posted July 31, 2018 8 hours ago, wanta911 said: I guess with the Uptone LPS 1.2 I would have to use the 12v or 19v outlets as the variable outlets max out at 2 amps so don't get to 36w? The LPS-1.2 charger has a strict requirement for 36W, so you're right. Pareto Audio AMD 7700 Server --> Berkeley Alpha USB --> Jeff Rowland Aeris --> Jeff Rowland 625 S2 --> Focal Utopia 3 Diablos with 2 x Focal Electra SW 1000 BE subs i7-6700K/Windows 10 --> EVGA Nu Audio Card --> Focal CMS50's Link to comment
wanta911 Posted August 29, 2018 Share Posted August 29, 2018 Hmmm....still not available for ordering. I've got an itchy finger to buy a 36W linear power supply for my LPS 1.2 and this very versatile unit would be great to give me some options. I hope Larry pulls it together soon. Link to comment
rickca Posted August 29, 2018 Author Share Posted August 29, 2018 The new 200W LPS will be open for pre-orders shortly. Clearly, the August 5 date (mentioned in my OP) that was once posted on the HDPLEX website was premature. Pareto Audio AMD 7700 Server --> Berkeley Alpha USB --> Jeff Rowland Aeris --> Jeff Rowland 625 S2 --> Focal Utopia 3 Diablos with 2 x Focal Electra SW 1000 BE subs i7-6700K/Windows 10 --> EVGA Nu Audio Card --> Focal CMS50's Link to comment
Ralf11 Posted August 29, 2018 Share Posted August 29, 2018 < 1 mV ripple or.. < 3 mV ripple; no crosstalk between "channels"; no RF/EMI... what other things would we want to know about a PS? Link to comment
sandyk Posted August 29, 2018 Share Posted August 29, 2018 28 minutes ago, Ralf11 said: < 1 mV ripple or.. < 3 mV ripple; no crosstalk between "channels"; no RF/EMI... what other things would we want to know about a PS? If they are using a single transformer there will always be a degree of interaction between components powered from different secondary windings, compared with separate transformers, even when the windings are used well within their current limits, possibly due to capacitive coupling to mains earth ? I found this when using a transformer with separate secondary windings for powering 2 USB devices. The performance was degraded compared with using 2 separate transformers and Linear PSUs. How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file. PROFILE UPDATED 13-11-2020 Link to comment
Popular Post FredericV Posted September 1, 2018 Popular Post Share Posted September 1, 2018 buyer beware We had a lot of problems with this brand, mainly with the 160 VA models: - two 160VA models started to smoke, because of no short circuit protection at the time on the 5V and 9V rails. This design mistake was confirmed by the vendor The PSU was getting so hot internally that the insulation of the ground wire, which touched other components, was melting! In Europe, PSU's have to be able to handle a short circuit without such issues. When TÜV tested, the PSU's are even tested while being short circuited, and the fuse cannot even be blown if the PSU needs to pass the test. These tests are very expensive, and it's obvious they saved on certification. - this happened at our dealers, one dealer actually wanted to stop with our brand because of this, the other upgraded to a much better Dutch brand, which never had any issues. So the damages caused by HDPLEX are real. Unfortunately they are not located in Europe, so making a legal case is very difficult for the damages caused to us. - the backpanel on the 160VA model would vary with each new batch, making documentation horrible - between models, the 12V and 19V outputs would be swapped, so dealers not reading the bundled wiring guide, and wiring from memory, would risk putting 19V onto a 12V DC converter - 9V and 5V output terminals can't handle much torque from attaching GX12 cables, so the output terminal would rotate and the internal pins would come loose from the PCB, see the PCB at the right: so we had several PSU's where we had to resolder the GX12 connectors - front panels often had small scratches, so we had a lot of replament panels sent to us - we even still have a box full of HDPLEX replacement front panels - fluctuating voltages at the output, e.g. 9V would start to drift down to a point where the high-end sotm card would go below the minimum voltage, but also in the opposite direction, where the output would suddenly do 20V instead 9V -> bye bye expensive USB card. We also had models where 9V would become 12V: - with other models, the 12V and 19V would go unstable, and the server would just go out after something like 45 minutes - with one model, cooling paste was clearly visible at the side - with one model, there was a bad soldering on a pcb, where the soldered wire would touch the chassis, therefore putting 19V back on the chassis -> we actually destroyed a motherboard. Opened PSU, removed PCB, cut the bad soldered wire sticking out, put some isolation in it, and the PSU now works again. But imagine this was a non-technical customer and 19V would leak onto his other appliances. - bundled wires where + and - were swapped !! later acknowledged by the vendor via email If you did not test, your DC converter would be fried and potentially your music server as well. - PSU's getting very hot / overheating / loud buzzing We stopped working with this brand because of the continuous QA issues at the time. Once we just got an email back that he just fired his QA: We recalled all HDPLEX supplies and opened every supply to check for mistakes. This was a very expensive operation and I would not recommend to work with HDPLEX unless you know what you're doing and have the technical skills to inspect and measure the PSU. Yes they are cheap compared to other brands, but the supplies that we received from HDPLEX where mostly faulty, or started to fail within the warranty period. From the models we received, only his very old 110VA supply never had any issues. While the vendor now claims all the issues are gone with the 200VA models, it's still a chinese product with a questionable reliability history. This all lead to selecting a new PSU vendor which does not have these mistakes. So far with this new vendor we had only had one faulty PSU in the field, and the vendor replaced the PSU within the same day when the issue was found. We also sent an official complaint about HDPLEX to the Belgian economic inspection, as anyone importing this brand is putting his customer at risk. Unless off course, all the former issue are automagically solved and no new issues are introduced with newer models. In Belgium they take faulty & dangerous power supplies very serious. LowMidHigh, Possum Jenkins, sphinxsix and 5 others 2 4 2 Designer of the 432 EVO music server and Linux specialist Discoverer of the independent open source sox based mqa playback method with optional one cycle postringing. Link to comment
wanta911 Posted September 1, 2018 Share Posted September 1, 2018 Hmmm....that's not good. I have two of the original units and yes one of them had the issue where I had to re-solder both of the connectors, which was annoying and obviously not a very good design as they broke very quickly and easily. I do note however that he has rectified this with all XLR connectors. These days the units I own only do single 12v duty on my NAS and router but have worked flawlessly, the router unit hardly gets above ambient temperature and the one powering the NAS is warm to touch but nowhere near hot. I would hope that Larry has addressed all of the previous issues in the new product. Link to comment
mfsoa Posted September 2, 2018 Share Posted September 2, 2018 I have one of the soon to be replaced 200 watt supplies and it has worked fine for me. The only issue was in my understanding that if they changed one of the 5V XLR outputs to 9V that it would also change the usb to 9V. Raspberry Pis make noise and smoke when fed 9V. Don't try this at home. HDPlex offered to pay for the replacement but I declined, only requesting that they make sure customers know that the USB is linked to one of the main outputs. I power a Brooklyn DAC+, ethernet switch, iFi Nano USB thingy (which in turn feeds a Raspberry Pi), and Minix Neo fanless PC. Removed 5 switchers from the system and I still have the 9V USB out if I need... Link to comment
mfsoa Posted September 2, 2018 Share Posted September 2, 2018 And, check out Ghentaudio for cables if interested in aftermarket. Link to comment
rickca Posted September 29, 2018 Author Share Posted September 29, 2018 Pre-order is now open for those interested. USA Stock ETA Oct 20th. Germany Stock ETA Oct 25th. Pareto Audio AMD 7700 Server --> Berkeley Alpha USB --> Jeff Rowland Aeris --> Jeff Rowland 625 S2 --> Focal Utopia 3 Diablos with 2 x Focal Electra SW 1000 BE subs i7-6700K/Windows 10 --> EVGA Nu Audio Card --> Focal CMS50's Link to comment
mourip Posted September 29, 2018 Share Posted September 29, 2018 I currently have three of the newer HDPlex models. Two for my speaker system and one for my headphone system. My first 100w unit had physical hum. Larry replaced it immediately. Larry is very responsible and seems to be always upgrading his product to improve the tech and to correct issues. I do not think that one can compare his earlier models with the current ones. My three current 200w LPS's have been perfectly reliable. "Don't Believe Everything You Think" System Link to comment
oneguy Posted September 29, 2018 Share Posted September 29, 2018 Why is the ripple voltage so high at 1 millivolt when a sigma11 LPS is around 10 microvolts. Is there something I am missing? Link to comment
rickca Posted September 29, 2018 Author Share Posted September 29, 2018 6 minutes ago, oneguy said: Why is the ripple voltage so high at 1 millivolt when a sigma11 LPS is around 10 microvolts. Is there something I am missing? Good question. Can you please provide a link to your referenced 10 microvolt measurement on a sigma11 LPS? Pareto Audio AMD 7700 Server --> Berkeley Alpha USB --> Jeff Rowland Aeris --> Jeff Rowland 625 S2 --> Focal Utopia 3 Diablos with 2 x Focal Electra SW 1000 BE subs i7-6700K/Windows 10 --> EVGA Nu Audio Card --> Focal CMS50's Link to comment
oneguy Posted September 29, 2018 Share Posted September 29, 2018 12 minutes ago, rickca said: Good question. Can you please provide a link to your referenced 10 microvolt measurement on a sigma11 LPS? From memory this eBay listing references 10 microvolts and a quick google search found someone else referencing 12 microvolts in the second post on this page. Both of these could very well be erroneous. Your thoughts? Link to comment
rickca Posted September 29, 2018 Author Share Posted September 29, 2018 8 minutes ago, oneguy said: Your thoughts? I would want to make sure that we're talking about an actual measurement (not something off a spec sheet) and that we're measuring exactly the same thing so that the results are comparable. Pareto Audio AMD 7700 Server --> Berkeley Alpha USB --> Jeff Rowland Aeris --> Jeff Rowland 625 S2 --> Focal Utopia 3 Diablos with 2 x Focal Electra SW 1000 BE subs i7-6700K/Windows 10 --> EVGA Nu Audio Card --> Focal CMS50's Link to comment
oneguy Posted September 29, 2018 Share Posted September 29, 2018 4 minutes ago, rickca said: I would want to make sure that we're talking about an actual measurement (not something off a spec sheet) and that we're measuring exactly the same thing so that the results are comparable. I think the only way to accomplish this is a side-by-side test using the same methods since as far as I know there is no standard of testing methods. I don’t believe anyone has done this yet especially because the new HDPLEX LPSU hasn’t been released. Link to comment
rickca Posted September 29, 2018 Author Share Posted September 29, 2018 It's easy to get confused about what is being measured. For example, iFi says the following about their iPower Measured on the Audio Precision 2, the iPower has an astonishingly low audio band noise floor of just 1uV! Your ebay listing says Ripple Coefficient: AP Test HIFI Audio Band 20HZ-20KHZ, 10UV level ( without the influence of wires) Are iFi and the ebay listing are measuring the same thing? I don't know. But I doubt these results are directly comparable to those in the HDPLEX video. If we're going to have a detailed discussion about such measurements, let's start another thread. I'd like to keep this one focused on the new HDPLEX 200W LPS without getting too far into the weeds. Pareto Audio AMD 7700 Server --> Berkeley Alpha USB --> Jeff Rowland Aeris --> Jeff Rowland 625 S2 --> Focal Utopia 3 Diablos with 2 x Focal Electra SW 1000 BE subs i7-6700K/Windows 10 --> EVGA Nu Audio Card --> Focal CMS50's Link to comment
fpalm69 Posted October 19, 2018 Share Posted October 19, 2018 On 7/30/2018 at 11:37 PM, wanta911 said: Looks good. I have 2 of the older 100w models that I use on my NAS & Router. I guess with the Uptone LPS 1.2 I would have to use the 12v or 19v outlets as the variable outlets max out at 2 amps so don't get to 36w? I had an older non-adjustable HEPlex unit that fried my Uptone LPS-1. Uptone inspected and confirm that due to the HDPlex not having OC/OV protection it took out several components in the Ultracap LPS-1. This is a known issue with the HDPlex. I got rid of the HDPlex and bought a new Ultracap-LPS-2. I do look forward to the new 200W version as it does have OC/OV protection and safe to use. 2 channel : full Innuos suite / Black Cat USB cables / Kii Three BXT Desktop : Innuos PulseMINI / Roon ROCK / SaBaj A20d amp-DAC / DCA E3 headphones Link to comment
Popular Post FredericV Posted November 11, 2018 Popular Post Share Posted November 11, 2018 I still have a 200VA model which was sent in Nov 2017 as a replacement for some older 160VA going bad. Today looking at some old stock, I finally opened the 200VA psu box and noticed the 12V rail from factory is completely non-working. All the other rails work fine: But 12V is an important voltage for us, and again this shows what QA you can expect from HDPLEX. With our current supplier (not hdplex), every supply is tested before shipping. So no more China PSU's for us. hvbias, Elberoth and rikirk 3 Designer of the 432 EVO music server and Linux specialist Discoverer of the independent open source sox based mqa playback method with optional one cycle postringing. Link to comment
shadowlight Posted November 12, 2018 Share Posted November 12, 2018 12 hours ago, FredericV said: But 12V is an important voltage for us, and again this shows what QA you can expect from HDPLEX. With our current supplier (not hdplex), every supply is tested before shipping. So no more China PSU's for us. Can you share your supplier's information? Link to comment
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