Will this work with Fosi Audio BL20A ? Will it improve sound quality?

Max voltage for the BL20A is 24V. This is the limit for the two TPA3116D2 chips, so I would not recommend a 32V power supply. Fosi Audio sells a 24V supply that might "improve" sound with respect to the amount headroom (large swings in volume) you can get without distortion but I doubt you could tell the difference at reasonable volumes.

Bt30dpro is only rated to 36v5a does this supply really work for it? is there a 36/48v 10a version?

I bought this power supply for the for the Fosi BT10D it will take up to a 48 volt power supply. My two other Fosi amps will only use a 32 volt power supply. So you must be careful to use the correct unit. Sadly I am not familiar with the BT30Dpro. If you go to the Fosi website they might have additional information. I am sorry I could not be more help.

did it improve bt20a pro quality? if yes which speaker type and watt do you use that make a difference?

48 V power supply improved sound with more clarity and wider soundstage. Speaker type is best at 8ohms.

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Fosi Audio 48V 5A Power Adapter Supply for Home Audio Bluetooth Stereo Receiver Amplifier Mini Hi-Fi Class D Integrated Amp

Fosi Audio 48V 5A Power Adapter Supply for Home Audio Bluetooth Stereo Receiver Amplifier Mini Hi-Fi Class D Integrated Amp

Product ID: 549695750

Details

Amperage
5 Amps
Brand
Fosi Audio
Colour
Black
Item Weight
0.79 Kilograms
Item dimensions L x W x H
19.3 x 9 x 3.8

⚡48V stable output

🔋5A high current delivery

🛡️Built-in safety protections

1161.89 DT

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Description

🔌 Power your passion with Fosi Audio’s reliable 48V 5A adapter — don’t let your sound settle for less!

COMPACT POWERHOUSE - Sleek, lightweight design fits seamlessly into any home or office setup without clutter.
SAFETY FIRST ALWAYS - Equipped with overcurrent and overvoltage protection for worry-free, long-term use.
DURABILITY MEETS DESIGN - Crafted with premium materials to withstand daily use and keep your audio system humming.
AMP UP YOUR AUDIO EXPERIENCE - Delivers a robust 5A current, perfect for high-power Class D integrated amps.
POWER YOUR SOUND WITH PRECISION - Stable 48V output ensures consistent amplifier performance without dips or spikes.

The Fosi Audio 48V 5A Power Adapter is engineered to deliver a stable 48-volt output with up to 5 amps of current, ideal for powering high-performance home audio amplifiers like the BT20A Pro and TB10D. Featuring built-in safety protections and a compact, durable design, this adapter ensures reliable, long-lasting power for your audio setup in any environment.

Specifications

ASIN	B0C2BQ4P8J
Amperage	5 Amps
Best Sellers Rank	#80,883 in Computers & Accessories ( See Top 100 in Computers & Accessories ) #1,365 in Power Supplies (Computers & Accessories)
Box Contents	1 Power Adapter
Brand Name	Fosi Audio
Colour	Black
Customer Reviews	4.5 4.5 out of 5 stars (455)
Importer Contact Information	[email protected]
Item Dimensions	19.3 x 9 x 3.8 Centimeters
Item Weight Unit of Measure	0.79 Kilograms
Manufacturer	fosiaudio
Manufacturer Part Number	48V電源
Maximum Power	240 Watts
Model Number	48V
Number of Items	1
Number of Packs	1
Output Voltage	48 Volts
Output Wattage	240 Watts
Packer Contact Information	[email protected]
Unit Count	1 Count

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1161.89 DT

Duties & taxes included

In stock

Sold byAmazon TunisiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Tunisia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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