TPA3116 Amplifiers, Explained: AS-33 + AK3116

TPA3116 is the chip behind many compact class-D amplifiers

TPA3116 is a class-D audio amplifier chip designed for efficient, compact power delivery. In a complete amplifier, the chip drives the speakers while the power supply and control circuits handle volume, input, and protection. The result is a small box that can power a pair of passive speakers without the weight and heat of a traditional receiver.

WOOPKER uses this technology in the AS-33 and the AK3116. Both are rated for 100W x 2 output and designed for passive speakers in desktop, TV, bookshelf, and small-room setups. The main difference is in the features around the chip.

WOOPKER AS-33: dual TPA3116 with more controls

The WOOPKER AS-33 is a 2.0-channel stereo amplifier with dual TPA3116 chips, Bluetooth 5.0, RCA input, and bass, treble, and master volume controls. It is a practical choice when you want wired and wireless input plus tone controls in one compact unit.

The AS-33 is powered by the included DC 24V / 5A adapter and supports passive speakers in the 4-8 ohm range. Connect speakers before powering on, select Bluetooth or RCA, and use the front controls to tune the sound.

WOOPKER AK3116: a small amplifier with a simple setup

The WOOPKER AK3116 is a compact 2.0-channel mini amplifier with rated 100W x 2 output, Bluetooth, and AUX input. It is designed for someone who wants a minimal amplifier that stays out of the way.

The AK3116 supports passive speakers in the 4-8 ohm range. Use Bluetooth for wireless sources or AUX for a phone, computer, or media player. Keep the first test at low volume and check speaker connections before powering on.

Which TPA3116 amp should you choose?

• Choose the AS-33 when you want dual TPA3116 output, RCA input, and bass, treble, and master volume controls.
• Choose the AK3116 when Bluetooth and AUX are enough and you prefer the smallest possible amplifier.
• Check speaker impedance before connecting; both models are intended for 4-8 ohm passive speakers.

A simple first-time setup

1. Power off the amplifier before connecting speakers.
2. Connect the left and right speaker outputs with correct polarity.
3. Connect the power adapter and turn on the amplifier.
4. Select Bluetooth or AUX, start at low volume, and raise it gradually.
5. If the sound is too bright or too soft, use the available tone or volume controls to match the speakers and room.

For help matching a TPA3116 amplifier to your speakers, contact WOOPKER Support with your speaker model and impedance.

Contact WOOPKER Support