tims Posted January 5, 2019 Share Posted January 5, 2019 On 1/4/2019 at 2:27 PM, ClothEars said: Over the past 2 years a group of us have been testing various power supplies to extract the best from our SOtM SMS-200Ultra's and Tortuga LDR preamps. Staring with common LPS's like the Teradak, HD Plex, iFi iPower and some DIY builds. We also borrowed some such as the Keces. SOtM's mBPS-d2s and the newer SPS-500. A Gieseler, Uptone LPS-1 and Core Audio were also tested but an LPS from China the "Zerozone" was purchased because it was so cheap and to our surprise it performed better than the aforementioned products. However the best performer of the lot was a heavy duty 12V car battery (Optima Yellow Top) that trumped them all. I used the battery on the SMS-200 Ultra and the Zerozone LPS's on the USB HDD caddy and the Tortuga. We had happily settled on this battery power supply until about 8 months ago we started to see some chatter about the Studer 900 power supply on some other forums. At $18 for the LPS kit from aliexpress one of us built a 12V 3A version and we checked it out. Collectively we were stunned at the performance. Whilst just a bit better than the battery it was considerably better than the others and you can buy a fully built one as recommended above for just US$60. A bit of tweaking with cables and capacitors lifted it's performance further. At the price it represents astounding value and worth a try if you are searching for a high performance LPS without the high price tag. If you could, please supply the link to this kit - I can't find it on the aliexpress site. Thanks Link to comment
tedwoods Posted January 5, 2019 Share Posted January 5, 2019 10 hours ago, Lebouwsky said: Yeah I’ve seen these pass by in the “Novel” topic, what’s your thought about these? I'll try one very soon... Link to comment
wanta911 Posted January 5, 2019 Share Posted January 5, 2019 9 hours ago, Ralf11 said: There a single review with a low score of 1 - it isn't really clear what he's saying, but part of it is a complaint about the caps. for $60 it is hard to go wrong... It looks like the guy is saying that they have put a different (wrong) resistor in that does not line up with the product photos and the unit won't power his 5V 1A Topping D50. That was in response to the seller is saying that the buyer should not have bought a 6A power supply for 1A use....and that worries me. Either the seller is clueless or he was hoping the buyer was. I'm interested in trying one of these, I see there is another seller with an identical unit: https://www.aliexpress.com/item/STUDER900-Regulator-linear-power-supply-DC12V-2-5A-30W-DAC-Audio-Decoder-Professional-Power-Adapter/32821841363.html?spm=2114.12010608.0.0.59631303kssStv Link to comment
Ralf11 Posted January 5, 2019 Share Posted January 5, 2019 well, it's only 60 bucks - that ain't even gonna buy the oil for a 911 oil change Link to comment
wanta911 Posted January 5, 2019 Share Posted January 5, 2019 Ordered. The oil change will have to wait 😉 Link to comment
ClothEars Posted January 6, 2019 Share Posted January 6, 2019 On 1/5/2019 at 1:00 PM, tims said: If you could, please supply the link to this kit - I can't find it on the aliexpress site. Thanks I put the link in my first post. @wanta911 has also provided a link three posts ago. Link to comment
tims Posted January 7, 2019 Share Posted January 7, 2019 On 1/4/2019 at 2:27 PM, ClothEars said: ......... We had happily settled on this battery power supply until about 8 months ago we started to see some chatter about the Studer 900 power supply on some other forums. At $18 for the LPS kit from aliexpress one of us built a 12V 3A version and we checked it out. Collectively we were stunned at the performance. Whilst just a bit better than the battery it was considerably better than the others and you can buy a fully built one as recommended above for just US$60. A bit of tweaking with cables and capacitors lifted it's performance further. At the price it represents astounding value and worth a try if you are searching for a high performance LPS without the high price tag. @Cloth Ears Thanks but I was after a link for the kit(?) mentioned above for $18 unless I have misunderstood your post. Cheers Link to comment
ClothEars Posted January 7, 2019 Share Posted January 7, 2019 5 hours ago, tims said: @Cloth Ears Thanks but I was after a link for the kit(?) mentioned above for $18 unless I have misunderstood your post. Cheers Here you go. https://www.ebay.com/itm/TL072-Regulated-Power-Supply-DIY-Kits-based-on-STUDER900-For-Pre-AMP-DAC-/173230773542 I actually bought the assembled boards and built the power supply with it. That way I could tweak the case, connectors, wire, capacitors and transformer to my liking. I used a 50VA instead of the 30VA that comes with the completed units. Middy 1 Link to comment
wanta911 Posted January 20, 2019 Share Posted January 20, 2019 On 1/3/2019 at 9:50 PM, ClothEars said: This linear power supply is brilliant. Don’t be put off by the cheap price and Chinese build. It performs far better than many exotic and expensive brands out there. https://www.aliexpress.com/item/STUDER900-Regulator-linear-power-supply-DC12V-2-5A-30W-tube-Preamplifier-Audio-Decoder-Professional-Power-Adapter/32822732608.html Thanks! I have a fully built one now that is powering my Chord Qutest....I'm not sure if I've heard the Qutest sound this good but I'll give it a bit more time before I make any definitive statements. For the record - I own a JS-2, an Ultracap 1.2, an SBooster and an HDPlex 200W. Link to comment
ClothEars Posted January 21, 2019 Share Posted January 21, 2019 13 hours ago, wanta911 said: Thanks! I have a fully built one now that is powering my Chord Qutest....I'm not sure if I've heard the Qutest sound this good but I'll give it a bit more time before I make any definitive statements. For the record - I own a JS-2, an Ultracap 1.2, an SBooster and an HDPlex 200W. I look forward to your impressions. 👍 Middy 1 Link to comment
Middy Posted January 21, 2019 Share Posted January 21, 2019 I have heard both sides saying for and against using a linear for the Qutest. I have one on order (Studer) to see. If anything to loose another wall mart. Id love to see if a secondary REG like LDOVRs would improve things more.. 8uV out low noise... Thanks for the heads up, i wasnt going to try with my Qutest from what was said in general... Ill post when it comes Good luck Dave Link to comment
Advieira Posted January 22, 2019 Author Share Posted January 22, 2019 Looking only for pictures, without listening, what of these LPS would you choose to power your NUC? Link to comment
dmormerod Posted January 23, 2019 Share Posted January 23, 2019 On 1/3/2019 at 8:50 AM, ClothEars said: This linear power supply is brilliant. Don’t be put off by the cheap price and Chinese build. It performs far better than many exotic and expensive brands out there. https://www.aliexpress.com/item/STUDER900-Regulator-linear-power-supply-DC12V-2-5A-30W-tube-Preamplifier-Audio-Decoder-Professional-Power-Adapter/32822732608.html Anyone know of an alternative as the one referenced is showing as no longer available. [br]QNAP+ -> Allo DigiOne Signature -> RequisiteAudio D3rs -> McIntosh C52 -> McIntosh MC-275 MK VI -> Harbeth 30.1's via Roon Link to comment
ClothEars Posted January 23, 2019 Share Posted January 23, 2019 32 minutes ago, dmormerod said: Anyone know of an alternative as the one referenced is showing as no longer available. The kits are still available here. https://www.aliexpress.com/item/Lusya-5-24V-STUDER900-Regulator-Power-supply-board-super-LM317-LT1083-LT1085-DIY-kit-finished-board/32948135430.html?spm=2114.search0104.3.9.288d54e1lu1zP5&ws_ab_test=searchweb0_0,searchweb201602_3_10065_10068_10130_10547_319_317_10548_10696_453_10084_454_10083_433_10618_431_10307_537_536_10131_10132_10133_10059_10884_10887_100031_321_322_10103,searchweb201603_51,ppcSwitch_0&algo_expid=c49fd9cf-28c5-4213-b78d-ceb9f7ed3a1c-1&algo_pvid=c49fd9cf-28c5-4213-b78d-ceb9f7ed3a1c The built units using a 25VA transformer can still be purchased here. https://www.aliexpress.com/item/25W-HIFI-Ultra-Low-Noise-Linear-Power-Supply-DC-Regulated-PSU-Refer-STUDER900-5V-6V-7V/32802603807.html If you google "Studer900" or "Studer 900" other options appear via Aliexpress. Link to comment
dmormerod Posted January 23, 2019 Share Posted January 23, 2019 8 hours ago, ClothEars said: The kits are still available here. https://www.aliexpress.com/item/Lusya-5-24V-STUDER900-Regulator-Power-supply-board-super-LM317-LT1083-LT1085-DIY-kit-finished-board/32948135430.html?spm=2114.search0104.3.9.288d54e1lu1zP5&ws_ab_test=searchweb0_0,searchweb201602_3_10065_10068_10130_10547_319_317_10548_10696_453_10084_454_10083_433_10618_431_10307_537_536_10131_10132_10133_10059_10884_10887_100031_321_322_10103,searchweb201603_51,ppcSwitch_0&algo_expid=c49fd9cf-28c5-4213-b78d-ceb9f7ed3a1c-1&algo_pvid=c49fd9cf-28c5-4213-b78d-ceb9f7ed3a1c The built units using a 25VA transformer can still be purchased here. https://www.aliexpress.com/item/25W-HIFI-Ultra-Low-Noise-Linear-Power-Supply-DC-Regulated-PSU-Refer-STUDER900-5V-6V-7V/32802603807.html If you google "Studer900" or "Studer 900" other options appear via Aliexpress. I did google and also look in AliExpress, but what drove my question was the fact that the images for all the other alternative look a very different layout to the original version that was suggested, and not being an electronic wiz I wasn’t sure if they would perform the same. [br]QNAP+ -> Allo DigiOne Signature -> RequisiteAudio D3rs -> McIntosh C52 -> McIntosh MC-275 MK VI -> Harbeth 30.1's via Roon Link to comment
ClothEars Posted January 23, 2019 Share Posted January 23, 2019 10 hours ago, dmormerod said: I did google and also look in AliExpress, but what drove my question was the fact that the images for all the other alternative look a very different layout to the original version that was suggested, and not being an electronic wiz I wasn’t sure if they would perform the same. There are some variations to the circuit board to allow mounting in a small case with the transformer soldered direct to the board. You could also buy a twin supply board and just use one side. Link to comment
dmormerod Posted January 24, 2019 Share Posted January 24, 2019 14 hours ago, ClothEars said: There are some variations to the circuit board to allow mounting in a small case with the transformer soldered direct to the board. You could also buy a twin supply board and just use one side. Thanks [br]QNAP+ -> Allo DigiOne Signature -> RequisiteAudio D3rs -> McIntosh C52 -> McIntosh MC-275 MK VI -> Harbeth 30.1's via Roon Link to comment
Middy Posted January 24, 2019 Share Posted January 24, 2019 I copied the description from the link and then search inside aliexpress. Got the exact model coming in the post.. ClothEars 1 Link to comment
greenleo Posted January 25, 2019 Share Posted January 25, 2019 I do not know why, but whenever I click the following link as shown in the 40th post, a tab comes out (which is good) but then nothing cones out. https://www.aliexpress.com/item/Lusya-5-24V-STUDER900-Regulator-Power-supply-board-super-LM317-LT1083-LT1085-DIY-kit-finished-board/32948135430.html?spm=2114.search0104.3.9.288d54e1lu1zP5&ws_ab_test=searchweb0_0,searchweb201602_3_10065_10068_10130_10547_319_317_10548_10696_453_10084_454_10083_433_10618_431_10307_537_536_10131_10132_10133_10059_10884_10887_100031_321_322_10103,searchweb201603_51,ppcSwitch_0&algo_expid=c49fd9cf-28c5-4213-b78d-ceb9f7ed3a1c-1&algo_pvid=c49fd9cf-28c5-4213-b78d-ceb9f7ed3a1c Link to comment
ClothEars Posted January 25, 2019 Share Posted January 25, 2019 35 minutes ago, greenleo said: I do not know why, but whenever I click the following link as shown in the 40th post, a tab comes out (which is good) but then nothing cones out. https://www.aliexpress.com/item/Lusya-5-24V-STUDER900-Regulator-Power-supply-board-super-LM317-LT1083-LT1085-DIY-kit-finished-board/32948135430.html?spm=2114.search0104.3.9.288d54e1lu1zP5&ws_ab_test=searchweb0_0,searchweb201602_3_10065_10068_10130_10547_319_317_10548_10696_453_10084_454_10083_433_10618_431_10307_537_536_10131_10132_10133_10059_10884_10887_100031_321_322_10103,searchweb201603_51,ppcSwitch_0&algo_expid=c49fd9cf-28c5-4213-b78d-ceb9f7ed3a1c-1&algo_pvid=c49fd9cf-28c5-4213-b78d-ceb9f7ed3a1c I don't know why you are having a problem but I just used the link to order 2 more kits for future projects. Try this one and see if it works for you. https://www.aliexpress.com/store/product/Lusya-5-24V-STUDER900-Regulator-Power-supply-board-super-LM317-LT1083-LT1085-DIY-kit-finished-board/314284_32948135430.html?spm=2114.12010615.8148356.4.6c4a76acsNDSs1 Link to comment
mikey8811 Posted January 25, 2019 Share Posted January 25, 2019 On 1/20/2019 at 10:46 PM, wanta911 said: Thanks! I have a fully built one now that is powering my Chord Qutest....I'm not sure if I've heard the Qutest sound this good but I'll give it a bit more time before I make any definitive statements. For the record - I own a JS-2, an Ultracap 1.2, an SBooster and an HDPlex 200W. Any further thoughts on this? Are you still thinking it beats the LPS 1.2, JS2 and SBooster in your system? If so, in what ways? Thanks Middy 1 Link to comment
Superdad Posted January 25, 2019 Share Posted January 25, 2019 4 hours ago, mikey8811 said: Are you still thinking it beats the LPS 1.2, JS2 and SBooster in your system? He never said it did. He just indicated that he also owns those other supplies. UpTone Audio LLC Link to comment
mikey8811 Posted January 25, 2019 Share Posted January 25, 2019 4 minutes ago, Superdad said: He never said it did. He just indicated that he also owns those other supplies. I think he pretty much did: "I'm not sure if I've heard the Qutest sound this good..... For the record - I own a JS-2, an Ultracap 1.2, an SBooster and an HDPlex 200W. " Link to comment
Advieira Posted January 25, 2019 Author Share Posted January 25, 2019 I've ordered a Keces P8. As I can't listen to test, I'll try by project. It seems well made. Link to comment
dmormerod Posted January 25, 2019 Share Posted January 25, 2019 On 1/7/2019 at 2:16 AM, ClothEars said: Here you go. https://www.ebay.com/itm/TL072-Regulated-Power-Supply-DIY-Kits-based-on-STUDER900-For-Pre-AMP-DAC-/173230773542 I actually bought the assembled boards and built the power supply with it. That way I could tweak the case, connectors, wire, capacitors and transformer to my liking. I used a 50VA instead of the 30VA that comes with the completed units. Curious which transformers you used? [br]QNAP+ -> Allo DigiOne Signature -> RequisiteAudio D3rs -> McIntosh C52 -> McIntosh MC-275 MK VI -> Harbeth 30.1's via Roon Link to comment
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