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AA-AB32261 Stereo 2 x 150mW Class AB LM4881 Headphone Amplifier Board

€14,95

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Sure Electronics AA-AB32261 Stereo 2 x 150mW Class AB LM4881 Headphone Amplifier Board

Name: Sure Electronics AA-AB32261 Stereo 2 x 150mW Class AB LM4881 Headphone Amplifier Board
Brand: Sure Electronics
SKU: AA-AB32261
Price: 14.95 EUR
Availability: InStock
Rating: 5 (1 reviews)

1 reviews

Brand: Sure Electronics

Show all Amplifier modules

2 x 150 mW

€ 12,36€ 14,95 9 In stock

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At least two years warranty
45-day cooling-off period to return

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Product description

Step up the output of your smartphone to drive high impedance headphones with this Class AB headphone amplifier board. The LM4881 IC is used to provide up to 15.7 dB of high quality gain to power even the most power hungry headphones.

Highlights

High quality Class AB output that uses the LM4881 Boomer IC
Up to 150 mW of power per channel (15.7 dB of gain)
Able to drive 8 ohm speakers
Operates on 8 to 24 VDC

Product details

Sure Electronics AA-AB32261 Stereo 2 x 150mW Class AB LM4881 Headphone Amplifier Board

Tip: Take a look at the table in this blogpost to see which power supply to choose for this product.

This compact, self-contained headphone amplifier board is built around the Texas Instruments designed LM4881 Boomer® dual headphone amplifier IC. The LM4881 features high quality, Class AB output (up to 15.7 dB of gain) with minimal components and is able to operate with a wide array of power supplies from 8 to 24 VDC without the need for a heat sink.

Additional to its use as a headphone amplifier, this amplifier board may also be used as a preamplifier or a small loudspeaker power amplifier, with output of up 150 mW per channel at 8 ohms. An exceptionally low total harmonic distortion and noise rating of 0.1% @ 150 mW into an 8 ohm load ensures clean output with lower impedance loads. Distortion and noise are even lower for high impedance headphone loads; 0.02% @ 75 mW into a 32 ohm load.

Locations for the addition of screw-down wire terminals are provided for signal inputs and power outputs. A two-conductor screw-down terminal is included for power supply connection. See related items for two-conductor screw terminals. Gain settings are provided for each channel, as-is stereo 3.5 mm input and output jacks, as well as a 2.1 x 5.5 mm DC power jack.

Specifications

Article number: AA-AB32261
Rated power output: 2 x 150 milliwatts at 8 ohms
2 x 120 milliwatts at 16 ohms
2 x 75 milliwatts at 32 ohms
Minimum load: 8 ohms
Efficiency: 23 %
Signal-to-noise ratio (SNR): -
Distortion: 0.025 % THD+N at 1 kHz, 16 ohms, 120 milliwatts
Frequency response: 100 - 20,000 Hz
Gain: 9.6, 15.7 dB
Input sensitivity: 0.19 V
Input impedance: 1.7k ohms
3.3k ohms
Amplifier Classification: Class AB
Circuit Topology: Texas Instruments LM4881
Speaker output channels: 2
Input connection type: 3.5 mm jack
PCB solder connection
Speaker output connection type: 3.5 mm jack
PCB solder connection
DSP function: -
Bluetooth: -
EQ Adjustment: -
Power Requirements: 8 - 24 VDC, 500 mA
Power inlet connector: DC jack
PCB solder connection
Current limit: -
Under/over voltage protection: -
Dimensions (L x W x H): 76 x 51 x 16 mm
Mounting hole spacing: 66 x 41 mm
Mounting hole diameter: -