Bricks List: 36V & 48V Power Supplies (for Fosi, Aiyima etc.)

[EJ3]

EJ3 - here's sending you healing energy. I had my brush with it 9 years ago. Caught it early, did cryotherapy... nothing since, and yet nothing is permanent in life. My fam has a terrible history in that respect though...

Thank you! Please check your DM for more:

 

[olds1959special]

My BT20A power supply makes a lot of high pitch squealing sounds when you put your ear to the actual unit. What's a good replacement?

 

[jEDGEc0m]

My BT20A power supply makes a lot of high pitch squealing sounds when you put your ear to the actual unit. What's a good replacement?

I hope you get a response from someone better informed and qualified than me, but depending how loud these sounds are, maybe it's fine and you can not worry about it? Eg i have an LED torch that makes a high pitch sound when it's on - I am unconcerned about it.

Looks like 12-24V is the range for the Fosi BT20A.

This might not be suitable, but perhaps a good quality unit - just gotta hook up the cables (could cut and use the existing cable+barrel jack from your current power supply)
I got 2 of these in 48V versions for Fosi V3 Mono. i expect they are good, and they are certainly doing the job, and I like that i have a range that i can adjust and set the voltage. the "N2" versions of these LRS mean well power supplies can do 200% current/power for "short periods". (which are probably actually very long periods in audio application). Seemed really well priced to me.

https://www.mouser.com/ProductDetail/MEAN-WELL/LRS-200N2-24?qs=HoCaDK9Nz5frXF%2FprGVh3g%3D%3D

Alternatively, you might find some existing laptop power bricks might be suitable for that voltage range. I think my defunct laptops had 19V from memory, with decent power/current that would probably be suitable unless you're pushing to get max volume from the amp. You could do that for a bargain, re-purposing method.

My uninformed 2 cents...

 

[olds1959special]

I hope you get a response from someone better informed and qualified than me, but depending how loud these sounds are, maybe it's fine and you can not worry about it? Eg i have an LED torch that makes a high pitch sound when it's on - I am unconcerned about it.

I had the hide the PSU behind my monitor stand where all my power strips are, because I could hear it when it was closer to me. I'm not worried about it now.