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Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

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Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Thu Sep 18, 2014 9:55 pm

Hi guys,

Background
I was in the midst of building LPS for my coming LHLabs GEEK PULSE DAC as you can see from the link [You must be registered and logged in to see this link.]. There are quite some efforts one need to spend to DIY a good LPS. It's just too much hassle to source for parts, chassis work, soldering, assembling, and testing; and yet, these hard-works may not warrant good performance compared to off the shelf product; arguably if you have good test equipment to refine the circuit, that’s of course another story.  

I always wanted a good LPS like [You must be registered and logged in to see this link.]. It is known to have very high bandwidth, ultra-low noise, fast load demands response and very good output stability by means of error close loop feedback compensation; all these are to be considered for a serious performance LPS in order to make your gear sound at the best.

The silver light at the end of the tunnel!
I made some efforts talking to my ex-audiophile components supplier (hohodiy) from Taiwan, I manage to link up with a supplier Jay’s Audio who is currently releasing a very well built Linear Power Supply equipped with loads of premiums parts, designed with referenced and improved Walt Jung Super Regulator! Very exciting indeed, isn’t it!

Jay's Audio is an Audiophile hifi manufacturer who builds premium product like CD-Pro2, High End ESS9018 DAC, Headphones Amp, and LPS. All products are equipped and built with premium parts, and more importantly, they are 100% tested with audiophile test equipment Agilent Instruments & Audio Precision software! These are costly gears can only be found in high end manufacturer in hifi market. (p/s: Light Hamonics Labs use these test equipment too!)

Highlight of the Jay’s Audio Ultra-Low Noise LPS25VA:
- AC Incoming: Schurter IEC, Japan Made EDK Switch
- AC Noise Filter: UK RIFA RFI Suppression Caps & Noise Filter    
- AC Transformer: Nuvotem Talema Encapsulated 25VA w/ Fast Acting Fuse Protection
- High Speed Rectifier with RIFA 0.1uf Bypass Caps
- Phillips BC 2200uf/25v x 4 Reservoir Caps, total of 8800uf !
- Phillips 1% Precision Resistors
- Panasonic FC 120uf, 390uf Decoupling Caps
- Mexico Made Inductors
- Analog Device OP177 for Voltage Error Feedback Compensation
- Toshiba Pass Power Transistor
- Two Simultaneously Driven Voltage Output Jacks  
- Mexico Made Multi-turns Variable Resistor for Fine Voltage Output Adjustment  
- Voltage Rating: 5VDC/3.5A, 12VDC/2A  
- Integrated Aluminium Heat-sink chassis, with 5mm thick (very) well designed front panel with Laser Marked texts

The circuit design of Jay's Audio LPS25VA is referenced and improved of the well-known Walt Jung Super Reg. The performance is first in the class I must say. Output voltage stays VERY stable with 0.01VDC tolerance despite I'm driving it almost at full load. It only gets a bit warm after a 48hrs of stress test. With such little money spent, I must say it’s the best bang of buck’s investment in hifi ever!

Action Pics:

Laser Etched Brand & Model, never fade! 7-Segment Display of Voltage Output w/ 2 decimal resolution
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Dual Voltage Output Jacks, Minor Adj Knob (+- 10%)
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Size Comparison with LHLabs Geek Out
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Guaranteed Premium, Long Life Parts Inside!
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Very well designed and neat layout !
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Authentic Parts – High Grade Premium Talema 25VA Transformer
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Prices:
RM500 + Freight.

What’s in the package:
1. The LPS25VA itself with thick foam package
2. 0.8m long of DC5.5 - 2.1 mm cable
3. NO power cord, I guess none of us would want it.

Warranty / RMA:
The production comes with 12 months warranty. All LPS are powered up & tested as spec here in the Singapore by myself. Buyers are to bear the return shipping cost to manufacturer (Jay’s Audio) should the product is defective within the warranty period.

Order Instructions:
1. Select Output Voltage Rating: 5v @3.5A ;9V @2.5A ;12V @2.0A ;15V @1.5A
2. Made full payment to my Maybank Saving Accounts: CHEE HUI CHING 101106171391
3. Notify me by sms/whatsapp/viber once payment made @ +65 9768 4662
4. Item will be posted to you by Singpost Register Parcel


I’m very confident that this will be the BEST LPS you could find in the market at this price range. I do not want to criticise some LPS available in the market, but with my experience in hifi hobby and DIY, Jay’s Audio LPS is unbeatable! I’ll anticipate the NORMAL selling price of this sort of performance LPS at range of RM1000!

Thanks for reading guys.

Rgds,
Alvin Chee
+65 9768 4662 sms/whatsapp/viber


Last edited by alvin1118 on Tue Aug 04, 2015 9:14 pm; edited 7 times in total

alvin1118
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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by whois101 on Thu Sep 18, 2014 11:11 pm

Hi,

Dual 12v output means can power 2 x12v devices at the same time?

Checked both my equipments rated 12v/3A but yours is 12v/2A, any side effects?


Last edited by whois101 on Thu Sep 18, 2014 11:12 pm; edited 1 time in total (Reason for editing : Typo)
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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Fri Sep 19, 2014 8:52 am

hi whois101,

yes dual 12v output jack can power 2x12vdc load simultaneously. 

The rule of thumb is, the load to be connected to this  Linear Power Supply, its power consumption shall be lesser than the Linear Power Supply capacity. i.e. LPS rated at 12VDC/2A means the load shall be 12VDC, power consumption less than or equal to 2A. 

"2A" the max capacity of the LPS; if you have two loads rated at 12VDA/1A each, then you can connect both of them to this LPS. 

You may check on the stock wallwart switch mode power adapter rating, if its rating is within the capacity of LPS, then you may upgrade it to get better audio experience!

[You must be registered and logged in to see this link.]

Some use case for:

5VDC/3.5A
- Raspberry Pi
- Cubox 
- USB DAC PSU
- Power Supply for your smart phone 

12VDC/2A
- DSpeaker Anti Mode
- Chord Chordette EX
- LHLabs Geek Pulse
- Too many to list down 

Cheers,
Alvin Chee

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by whois101 on Fri Sep 19, 2014 10:16 am

Hi Alvin thanks for the response, means for my case this LPS is not recommended? As both my devices uses 3A?
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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Fri Sep 19, 2014 1:09 pm

hi whois101, 

if the device consume 12V/3A, then this LPS 12V/2A cannot be used. apologies. 

p/s: updated actual postage cost. 

Rgds,
Alvin

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by bimmerman on Fri Sep 19, 2014 5:26 pm

Do you have a 9V version of this?
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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Fri Sep 19, 2014 8:51 pm

Hi bimmerman,

9v / 24v version can be pre-ordered. I anticipate to place order in mid of Oct with Jay's Audio. 

You may preorder, just make full payment and I'll book it for you. Pls act fast, need to lock this price with Jay. He would like to up price, high demand :-(

Rgds,
Alvin
+65 97684662

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Sat Sep 20, 2014 2:53 pm

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Shipment for our friends from KL and KK!!

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Mon Oct 06, 2014 11:15 pm

upz. Happy users all over the place :-D

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Tue Nov 04, 2014 9:46 am

Upz


Last edited by alvin1118 on Tue Mar 24, 2015 6:13 pm; edited 1 time in total

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Fri Nov 07, 2014 12:41 pm

Got few bros ask why is postage at RM70. It is shipped from Singapore Singpost registered parcel postal service, pricy.

I can offer alternative to ship from JB Nationwide; that would cost RM30. The catch is I only go back once a month.

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by jameslee on Sun Nov 09, 2014 1:46 am

In 2011, I bought a new Oppo BDP-93 weighing at about 5 Kg which was sent via GD Express (+ added insurance for loss or damage for a total claim on the price of the Oppo)... and the postage was RM 100 from Kuala Lumpur to Pahang.

The question is... what is weight of the "small-sized" LPS25va Linear Power Supply ?

Usually the courier/postage are charged according to the weight of the item to be delivered with a minimum rate for weights not above (example) 1 Kg and a chargeable scale is used for every additional weight.

I think Singtel rates are too expensive for a "registered parcel" as I believe your LPS25va is light, small-sized and not heavy at all.

I am actually interested to buy this but I do have a question which I don't know whether you know the answer or not.

I store all my bluray ripped ISOs and BDMVs, 24bit 192KHz FLACs Audio, DSD64 Audio files in my SATA harddisks. I then insert the harddisk to bays/docks with USB connection... to my Oppo BDP 95. I also use a bay/dock connected to my computer which is then connected via USB to my M2Tech Young DSD DAC. So... will replacing the bay/dock Adapter (2A, 12V) with your low noise LPS25va help to improve the audio quality to my Oppo player and also my computer ?

I think many of us will automatically react with ??? to the quoted RM 70 postage for a light item.

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by stepyew on Sun Nov 09, 2014 3:00 pm

Hi and hello

can it be use in the popcorn hour a400 ? at the back power input says 12.0v , 3.5A max.

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Sun Nov 09, 2014 3:25 pm

jameslee wrote:In 2011, I bought a new Oppo BDP-93 weighing at about 5 Kg which was sent via GD Express (+ added insurance for loss or damage for a total claim on the price of the Oppo)... and the postage was RM 100 from Kuala Lumpur to Pahang.

The question is... what is weight of the "small-sized" LPS25va Linear Power Supply ?

Usually the courier/postage are charged according to the weight of the item to be delivered with a minimum rate for weights not above (example) 1 Kg and a chargeable scale is used for every additional weight.

I think Singtel rates are too expensive for a "registered parcel" as I believe your LPS25va is light, small-sized and not heavy at all.

I am actually interested to buy this but I do have a question which I don't know whether you know the answer or not.

I store all my bluray ripped ISOs and BDMVs, 24bit 192KHz FLACs Audio, DSD64 Audio files in my SATA harddisks. I then insert the harddisk to bays/docks with USB connection... to my Oppo BDP 95. I also use a bay/dock connected to my computer which is then connected via USB to my M2Tech Young DSD DAC. So... will replacing the bay/dock Adapter (2A, 12V) with your low noise LPS25va help to improve the audio quality to my Oppo player and also my computer ?

I think many of us will automatically react with ??? to the quoted RM 70 postage for a light item.

Hi James, 

I do agree the postage is high from Singapore to Msia. It's calculated based on volumetric weight; the LPS comes with thick foam and carton for transit protection along its way to the owner. Hence offering alternative to ship from JB by Nationwide courier will be better cost saving for hifi love in Msia! 

As for your case of using the LPS25VA for USB HDD Bay will / will not improve the SQ. The answer is really subjective. A well designed player / USB DAC isolate the ground in analogue section. The USB HDD connects to Oppo / Computer, the noise from the USB HDD Switch Mode Power Supply (SMPS) will be injected to the Oppo / Computer (USB DAC). IF these noises are not isolated in the player / DAC, the SQ will be compromised. 

Some may experience USB noise through Computer through DAC to Amplifier. These noise are switching noise, not being isolated by the DAC but send to the amp for amplification, hence the noise. 

Purpose of LPS is to eliminate the switching noise generated by SMPS, also provide audio-spectrum required bandwidth, instantaneous load current requirements. 

I have sold a few LPS to KL, Selangor, Sarawak; owners were impressed with the improvement they never be able to experience with stock wallwart SMPS adapter!

Very Happy

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Sun Nov 09, 2014 3:29 pm

stepyew wrote:Hi and hello

can it be use in the popcorn hour a400 ? at the back power input says 12.0v , 3.5A max.

Hi Stepyew,

Thanks for your interested in LPS25VA. 

Popcorn hour has got an internal HDD, hence the power requirement is high. Unfortunately, the 12VDC model is rated at 2A. It cannot be powering up devices rated higher than its capacity. 

Alternative is to parallel two units of LPS25VA to double up the capacity; but that might not be cost effective. 

Cheer!

Alvin

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by stepyew on Sun Nov 09, 2014 10:07 pm

alrite alvin ,


thanks for the prompt reply

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Thu Nov 13, 2014 11:10 pm

you're most welcome sir.

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Wed Nov 19, 2014 9:27 am

Use the LPS to power up device in your audio chain, great improvement!

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Tue Aug 04, 2015 9:18 pm

Pre-order special ! ETA mid of Sept. Grab yourself a bargain!

LPS powering up LUMIN D1
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Enjoy the music.

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Mon Aug 17, 2015 11:04 pm

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Made a custom order for 24 VAC with dual outputs for my Rega phono and turntable. 


Am very sure there is a mark improvement in sound over the stock wall warts. 


Best part, fraction of the price Rega charges for their lps!

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Sun Nov 08, 2015 3:49 pm

taking orders. please whatsapp me @ +65 9768 4662 if you need any.

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Re: Jay's Audio LPS25VA Linear Power Supply [5V, 9V, 12V, 15V, 18V, 24V]

Post by alvin1118 on Fri Sep 30, 2016 1:53 pm

up, limited stock available.

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