Question 1

Is this actually 100w (50w x 2) or is it less? I'm panning on hooking this up to a 12v 3000mah battery pack.

Accepted Answer

Hello. 100W means 50W for each channel. But it also depends on your power supply. If you use 12V 3A, the power supply can only provide 36W (12V*3A). Then the amplifier can only provide 36W (18W for each channel) too.

Question 2

What is the tip size for the adapter?

Accepted Answer

Hello. Do you mean the power port size? It is 5.5*2.5mm.

Question 3

I want to use an external switch to power it on will it pop if volume left when power is turned back on?

Accepted Answer

If you use a switch to turn it on, you will have to press the ON button to get it to work after being turned off. When turned on a voice tells you which mode it is on. It does make a popping sound on the speakers I have hooked up to it.

Question 4

Will this amplifier work with 2x80 watt RMS speakers (even though the amplifier says that it is 2x50 watt)?

Accepted Answer

It should work with the speakers, although not drive power into them at a full 80W each (assuming the speakers really do 80W RMS).  Power supply voltage has major impact on audio output power....!  Using the amplifier with a 24 volt 5 A power supply you may get 50W per channel if you use 4 ohm speakers but... watch that power supply the vendor provides... It may be rated at 12 volt. With that one you will barely squeeze 15 watt per channel out of that amplifier.  Solution:  Get a 24 volt 5 amp "Brick style" power supply, or a 24 volt laptop charger (an older version universal laptop power supply would fit in nicely, when you set it with the right plug and 24 volt ).  I am using a generic laptop charger set for 24 volts and am enjoying great sound with a pair of Klipsh speakers.  I in turn, later augmented  the amplifier and added larger audio input capacitors and also power filtering capacitors on the power supply incoming wires, in order to improve base punch.

ASIN	B01MS739KX
Best Sellers Rank	#108,284 in Electronics ( See Top 100 in Electronics ) #308 in Home Audio Amplifiers
Brand Name	Nobsound
Customer Reviews	4.2 4.2 out of 5 stars (222)
Included Components	1× Amplifier; 1× Power Adapter; 1× 3.5mm+RCA+USB Cable; 1× Manual
Manufacturer	Nobsound
Material Type	Plastic, Metal
Maximum Output Power	100 watts
Maximum Supply Voltage	24 Volts
Minimum Supply Voltage	9 Volts
Model	DZ027
Mounting Type	Surface Mount
Number of Channels	2
Output Power	100 Watts
Part Number	DZ027
Specification Met	CE
Supply Current	5 Amps
Unit Count	1 Count
Voltage	12 Volts (DC)

Douk Audio NS-10G Mini Bluetooth 4.0 Digital Amplifier 100W HiFi Amp Power Supply (Black)

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