Adafruit Stereo 2.8W Class D Audio Amp

Code: A52QN

  • Perfect addition to any audio project
  • 2.8W with 4 ohm speakers, 1.7W at 8 ohm
  • Selectable gain of 6dB, 12dB, 18dB and 24dB via switches

Product details

Adafruit Stereo 2.8W Class D Audio Amp

• Perfect addition to any audio project
• 2.8W with 4 ohm speakers, 1.7W at 8 ohm
• Selectable gain of 6dB, 12dB, 18dB and 24dB via switches
• Speakers not included
• Soldering Required
• Schematic available here

What can I do with this amp?
Easily boost your sound projects using this handy amplifier module. Simply power with 2.7-5V to VDD, select your dB gain, attach your preferred input and add some speakers and you’re ready to rock. You can amplify your mobile phone, MP3 player, laptop, or even an Arduino or Raspberry Pi project.

Great performance for power consumed
Thanks to the Class D amplifier there is less heat generated, which saves power and provides an incredible 89% energy efficiency rating – with 8 ohm speakers using a 5V suppler. This kit provides you with two 2.8W channels using 4 ohm speakers, or two 1.5W channels using 8 ohm speakers.

How to pick the right speaker
You need to ensure that the wattage of the speakers is greater than that of the wattage being fed through. This amp is designed mostly for 4 ohm and 8 ohm speakers, higher ohm speakers may be used but will generate a large amount of heat.

Putting the connections to use
Each gain level activated will double the existing voltage of the audio input. You will get twice the voltage for 6dB, four times the voltage for 12dB, eight times the voltage for 16dB and 16 times the voltage for 24dB. Applied practically, a 12dB gain will change a 0.25V audio input to 1V audio output. You can change the gain by using the switches or joining the G0 or/and G1 pins to ground which mimics turning each of them "on".

If you are not using a differential input, simply bridge the L- and R- marked input pins. This is common for devices that use a 3.5mm jack, and is complimented by a 3.5mm jack, PCB mounted or in-line.

This amp also has a channel shut off, allowing you to turn off the right or the left channel independently via the SDR (Shut Down Right) and SDL (Shut Down Left) pins by connecting them to ground.

Specifications:
Voltage Input 2.5 – 5.5 V DC
Compatible Speakers 4 ohm up to 2.8 W
8 ohm up to 1.7 W
Adjustable Gain Range up to +24 dB
Chipset TS2012
Dimensions (W x D x H) 22.96 mm x 28.33 mm x 4.97 mm
Weight 2.56

Bulk Prices

Item code Item name Quantity Price
A52QN Adafruit Stereo 2.8W Class D Audio Amp (1+) £5.40

Why not tell us and our B2B sales team about your specific business needs and expectations?

At Maplin, we’re always looking for innovations and technology that can help your business work more efficiently.

With a dedicated business team and special services available only to business customers, you can access our electronics and technology solutions through our wide network of over 200 stores, our website with more than 20,000 products or though your personal account manager over the phone.

Working with organisations for nearly 30 years, Maplin offers a nationwide range of benefits to our business users:

  • 30 day EOM credit account
  • volume discount pricing
  • online and in-store use of account
  • one-to-one account management
  • bespoke product sourcing and branding
  • free delivery on orders over £10
  • scheduled and forward ordering service

Contact our business team on 

0333 400 9740 to open an account or discuss your business needs.

To receive your free copy of the Maplin Catalogue just call 0333 400 9740.

£5.40

  • Home Delivery
  • Click & Collect