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Qty 3 - PAM8403 Mini Digital Power Amplifier Board Class D 2*3W, US $6.99 – Picture 0
Qty 3 - PAM8403 Mini Digital Power Amplifier Board Class D 2*3W, US $6.99 – Picture 1
Qty 3 - PAM8403 Mini Digital Power Amplifier Board Class D 2*3W, US $6.99 – Picture 2
Qty 3 - PAM8403 Mini Digital Power Amplifier Board Class D 2*3W, US $6.99 – Picture 0
Qty 3 - PAM8403 Mini Digital Power Amplifier Board Class D 2*3W, US $6.99 – Picture 1
Qty 3 - PAM8403 Mini Digital Power Amplifier Board Class D 2*3W, US $6.99 – Picture 2

Qty 3 - Pam8403 Mini Digital Power Amplifier Board Class D 2*3w

US $6.99

  • Grand Rapids, Michigan, United States
  • Feb 23rd
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 Welcome to my posting.  These will ship within USA (i.e. 2-6 days delivery) Qty 3 x Amplifier Board - Yes I ship 3 units with 1 purchase (you have a spare or two needed).  So if you order QTY 2 above you will get 6 units. Product introduction: PAM8403 mini class D digital power amplifier board Working voltage: 2.5 V to 5.5 V. Note: the power supply voltage not more than 5.5 V, the power don't pick up the positive and negative. Speaker with: 4 to 8 ohm, recommended use: 4 ohm; Horn power: 2-8 w. Can use computer USB 5 v power supply, or use a mobile phone charger USB 5 v power supply, can also use the lithium battery power. High efficiency 90%, 4 ? load and 5 v power supply conditions, can provide 3 w (left sound channel) + 3 w output power (right sound channel). The efficiency of class A and class B amplifier only around 30%, class D power amplifier in today's highly regarded under the green tide. Class D power amplifier efficiency is extremely high, not because the temperature affect the sound quality, and need not add heat sink, small size. Built-in amplifier board de-noising circuit, the power on/off without chip, poof noise; Module has the short circuit over current protection with over temperature protection. Left and right channel output of the "negative" and can not be together, otherwise it will burn IC, and speaker(load) should be connected before power on.    
Condition:
New: A brand-new, unused, unopened, undamaged item in its original packaging (where packaging is applicable). Packaging should be the same as what is found in a retail store, unless the item is handmade or was packaged by the manufacturer in non-retail packaging, such as an unprinted box or plastic bag. See the seller's listing for full details. ...
Model PAM8403
MPN Mini Digital Power Amplifier Board Class D 2*3W

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