Loxjie p20 amp Good power supply upgrade UK NEED HELP

Right so i have a Smsl M3 plugged into my Loxjie P20 via RCA powering my hd6xx and i was wondering where i can find some nice tubes for the P20 “In the UK”, I think the tube is 6N3 i want the tubes that bring back the most low end bass as possible for the hd6xx. Also i was looking for some Socket Saver’s for my p20 but i don’t know witch ones to get. (ordered some cheap tubes of ebay just to try cuz why not but im new to tube rolling. (Cheap Tubes i got ( https://www.ebay.co.uk/itm/6N3P-EV-MATCHED-PAIR-396a-5670-2C51-6385-ECC42-tube-USSR-Rhombus-OTK-GOLD-GRID/224131076623?ssPageName=STRK%3AMEBIDX%3AIT&_trksid=p2057872.m2749.l2649 )

Here’s a couple of options;

Any of the following tubes will substitute for a Chinese 6N3
2C51, 6CC42, 6H3n, 6H3nN, 6H3nE, 6H3n, 6H3nN, 6H3nE, 6N3, 6N3P, 6N3PI, 6N3PE, 6N3T, 6SS42, 396A, 5670, 5670WA, 6385, 6854, CK5670, CK5670WA, CV2575, CV2831, CV4013, CV5894, CV8247, ECC42, GL5670, WE396A

Google is your friend.

@DN77n what about them being a matched pair ? i was told they need to be matched like headphone drivers do?

I’m no expert but my understanding is that it depends how the tubes are implemented in the circuit.
Here’s an explanation;

In your case you have three options.

  1. Contact Loxjie and get their recommendation.
  2. Pay the premium for “matched” tubes and hope the seller is trustworthy.
  3. Given that many of these tubes are inexpensive, get a set of 4 or 6 and mix and match till it sounds right to you.

One other thing. The consensus on many of these inexpensive amps and pre-amps is that they all seem to benefit with a better power supply.

Thanks. I was looking into that but dont know what would be a good power supply for uk plug i saw somebody get a 15v for the loxjie and say its good but the loxjie’s port is 12v so im not sure if it will break it or shorten the lifespan also im sure a amazon 12v power supply would just be the same as the loxjie one could be wrong tho

I wouldn’t play around with the voltage as it could damage the unit.
A decent 12 V - 3A to 5A rated linear power supply is your best option. The higher the amperage the better. The Loxjie will only draw what it needs.

yea though so but the other problem how do i know whats a good power supply and not just another cheaply made one (and b4 anyone talks about the ifi power X im not spending 100quid on a power supply for a amp that cost me 90)

just checked with Calipers its this connector (its 5.5mm on the outside and 2.5mm on the inside)

standard loxjie p20 power supply specs

I hear you. I’m in the same boat.
Big picture. You’ve got $$$ in headphones, a DAC, an amp, and what ever source is supplying the audio signal. If you’re feeding it noisy power that can’t meet the current demands of the chain it defeats the purpose of buying good equipment.
I’m looking for a dual output, 12v & 5v, with 3A minimum current rating and it’s pretty clear I’m going to end up spending ~$150+.
The up side, all the power adapters go away. One plug in the wall. And I’ll be able to power everything on the desk top now, and down the road if I change anything.

In your case something like this would work.

Unfortunately, the next level up - 12v 3A - is not easy to do cheap.
The alternative is diy, but these Chinese products are so competitive I doubt you’d save much buying the components and building your own.

i do not feel confident building my own so i guess my only option is the ifi ipower X for 100 12v 2amp

https://www.amazon.co.uk/iFi-iPower-Noise-Supply-Adapter/dp/B084GVJQLB/ref=sr_1_2_sspa?dchild=1&keywords=ifi+power+x+12v+3amp&qid=1607386250&sr=8-2-spons&psc=1&spLa=ZW5jcnlwdGVkUXVhbGlmaWVyPUFNQlI5TEgwRTRSS0ImZW5jcnlwdGVkSWQ9QTA5ODAzNDAzTFJXOEZPR1RMMDdTJmVuY3J5cHRlZEFkSWQ9QTA1NzMzMDlWQjhPV0dTWENCN1cmd2lkZ2V0TmFtZT1zcF9hdGYmYWN0aW9uPWNsaWNrUmVkaXJlY3QmZG9Ob3RMb2dDbGljaz10cnVl UK link

(US Link https://www.amazon.com/iPower-Noise-Power-Supply-Adapter/dp/B0847T82LK/ref=sr_1_4?dchild=1&keywords=ifi+power+x+12v+3amp&qid=1607386354&sr=8-4 )

website https://ifi-audio.com/products/ipowerx/

or this https://www.amazon.co.uk/iFi-iPower-Noise-Adapter-Travel/dp/B01LZD8SHJ/ref=sr_1_2?keywords=audio%2Bvideo%2Bdc%2Bpower%2Bsupply&th=1

Website https://ifi-audio.com/products/ipower/

idk just want to find a good one in the uk XD

Those are pretty common dimmensions.

what would be safe for the p20 ( 12v 3a ) (12v 2/2.5a )( 12v 5a ) the stock is (12v 1.67a) but i saw somebody on youtube rec the ipower x (15v 1.5a) would a 12v 2/2.5a 3a or a 5a be too much im clueless about this sort of thing and want to be as safe as possible and not ruin the lifespan of my p20 ive been looking at psu’s and some are 12v 2a 18w and some are 12v 1.5a but 12w what is the W for my p20 I don’t understand

barrel is 5.5mm on the outside and 2.4/5mm on the inside i can only seem to find 5.5mm outside and 2.1mm inside centre positive “Tested”

https://www.powersuppliesonline.co.uk/power-adapters/gsm25b12-p1j-25w-12v-2-08a-power-adapter.html was looking at this looks like a decent website and has datasheet but its 2.1mm ID can i just solder a new one or get a (5.5mm OD 2.1mm ID) female to (5.5mm OD 2.5mm ID) male cable or would that not work also still dont understand the watts? https://www.powersuppliesonline.co.uk/power-adapters/power-adapter-accessories/2-1mm-to-2-5mm-dc-adaptor-barrel.html is the adapter i would need if the psu is good? (i can solder a new barrel onto it if thats all that would be needed)

A couple of things,

  1. Watts = the unit of measurement for Power.

  2. Those are still switching power supplies and though fine for their intended purpose will still introduce noise into the circuit.
    In a well built linear power supply, that highlighted value would be 1mV to 2mV.

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so im gonna guess that one is no good

With the stock PSU being 12V 1.67A (let’s call it 1.7A), anything with higher current (= A) rating is safe.
Below that current rating, you may start a fire (or more likely, trip Over Current Protection in in the Power Supply).
Voltage rating should not exceed the specs on the device or in the manual.

Correlation of Volt, Ampere (Current), and Wattage is super simple: V x A = W

ah so a 12v 2a linear PSU would be fine and that would be 24W correct?