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Product attributes Property Value
Manufacturer SparkFun Electronics
Product Series
Packaging Bulk |
Part Status Active
Type Class AB
Output Type 2-Channel (Stereo) or 4-Channel (Quad)
Max Output Power x Channels @ Load 38W x 2 @ 4Ohm; 16W x 4 @ 4Ohm
Voltage - Supply 8V ~ 22V
Features -
Mounting Type Through Hole
Operating Temperature 0°C ~ 70°C (TA)
Grade -
Qualification -
Supplier Device Package 15-Multiwatt
Package / Case Multiwatt-15 (Vertical, Bent and Staggered Leads)

The COM-09557 is a versatile Class AB audio amplifier from SparkFun Electronics, capable of delivering 38W per channel into 4Ω loads in stereo mode, or 16W per channel in quad mode. It operates from an 8V to 22V supply, making it suitable for automotive, home, and DIY applications. The through-hole Multiwatt-15 package simplifies prototyping and assembly. Its Class AB design ensures low distortion and high audio fidelity. The amplifier supports both 2-channel and 4-channel configurations, offering flexibility for multi-speaker systems. Typical applications include DIY audio projects, car audio, home stereos, and small PA systems.

  • High Power Output: 38W per channel into 4Ω provides ample volume for most home and car audio needs.
  • Low Distortion: Class AB topology delivers clean, high-fidelity sound.
  • Flexible Channel Config: Supports stereo or quad modes for multi-speaker setups.
  • Easy to Prototype: Through-hole Multiwatt package is ideal for DIY and breadboard projects.

DIY Audio Projects

The COM-09557's through-hole Multiwatt package makes it easy for hobbyists to build custom amplifiers on perfboard or stripboard.

Home Stereo Systems

With 38W per channel into 4Ω, this amplifier can drive bookshelf speakers for a high-quality home audio setup.

Car Audio Upgrades

Its 8V-22V supply range allows direct connection to car batteries, making it a popular choice for aftermarket car stereo amplifiers.

Public Address Systems

The quad-channel mode enables driving multiple speakers in small PA systems for schools or meeting rooms.

Musical Instrument Amplifiers

Musicians can use the COM-09557 to build compact guitar or keyboard amplifiers with low distortion.

Multimedia Speaker Systems

Its ability to drive 4 channels makes it ideal for 2.1 or 4.0 computer speaker setups, providing immersive sound.

Model Package Voltage Range Output Power (Typical)
COM-09557 15-Multiwatt 8V – 22V 38W x 2 @ 4Ω / 16W x 4 @ 4Ω
TAS5729MDDCAR 48-HTSSOP 4.5V – 26.4V 20W x 2 @ 8Ω
TAS5755MDFDR 56-HTSSOP 3V – 3.6V 15W x 2 @ 8Ω
MP7751GF-Z 28-TSSOP-EP 4.5V – 26V 36W x 2 @ 8Ω
Q: What is the output power of the COM-09557?
A: It can deliver 38W per channel into 4Ω loads in stereo mode, or 16W per channel in quad mode.
Q: What is the supply voltage range?
A: It operates from 8V to 22V, making it suitable for a variety of power supplies.
Q: Is this amplifier a Class AB type?
A: Yes, it is a Class AB amplifier, known for low distortion and good audio quality.
Q: Can it be used in quad-channel mode?
A: Yes, it supports 2-channel (stereo) or 4-channel (quad) configurations for multi-speaker systems.
Q: What is the operating temperature range?
A: It is rated for 0°C to 70°C ambient temperature, suitable for consumer electronics.
Base Product Number : COM-09557
Audio Amplifier Car Audio Class AB COM-09557 DIY High Power Home Stereo Multiwatt-15 PA System Quad Stereo Through Hole
Q: What is the output power of the COM-09557?
A: It can deliver 38W per channel into 4Ω loads in stereo mode, or 16W per channel in quad mode.
Q: What is the supply voltage range?
A: It operates from 8V to 22V, making it suitable for a variety of power supplies.
Q: Is this amplifier a Class AB type?
A: Yes, it is a Class AB amplifier, known for low distortion and good audio quality.
Q: Can it be used in quad-channel mode?
A: Yes, it supports 2-channel (stereo) or 4-channel (quad) configurations for multi-speaker systems.
Q: What is the operating temperature range?
A: It is rated for 0°C to 70°C ambient temperature, suitable for consumer electronics.