alvin1118
    
Posts: 1068

DIY
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WTS: JAY'S AUDIO USB Purifier
« on: December 13th, 2016, 12:56pm »
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Guys,
It's a new variant of the JAY'S AUDIO LPS25VA.
All it does is to clean up the noisy 5VDC inherited from the PC, purified by means of a well designed Walt Jung Super Regulator, sending ultra low noise clean power 5VDC to downstream USB DAC. The ground is isolated as well to eliminate dirty PC ground.
Typical Configuration:

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, - 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!
Actual Pics: Laser Etched Brand & Model, never fade! 7-Segment Display of Voltage Output w/ 2 decimal resolution

USB Input / Output Ports, Minor Adj Knob (+- 2%)

Guaranteed Genuine Premium, Long Life Parts Inside!

Very well designed and neat layout !

Authentic Parts – High Grade Premium Talema 25VA Transformer

Prices: S$168
What’s in the package: 1. The LPS25VA itself with thick foam package 2. NO power cord, I guess none of us would want it.
Warranty / RMA: 12 months warranty
Order Instructions: 1. Pre-order. Stock arriving end of Dec 2016. 2. Made full payment to my POSB Saving Accounts: CHEE HUI CHING 120-1-021962 3. Notify me by sms/whatsapp/viber once payment made @ +65 9768 46six2
Collection: 1. Stock arriving end of Dec'16. 2. Buyer are to arrange self-collection @ Blk 623 Woodlands Dr 52 S730623 or By TaQBin add $8.
Thanks for supports!
Rgds, Alvin Chee +65 9768 46six2 sms/whatsapp/viber
Preorder List: 1. Mike 2. Steven Ong 3. Koh 4. gs11tan
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