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Compact black amplifier with silver knobs, Bluetooth 5.0 antenna and power adapter

WUQ

WUQ BT20A Pro Bluetooth 5.0 Amplifier 300W x2 Passive Component

SKU CH-X1TH-RCM4K

Bluetooth 5.0 Class D stereo amplifier delivers 300 W per channel into passive speakers with 108 dB SNR and 0.005 % THD, plus swappable NE5532 op-amps and bass/treble controls

  • TypeOther
  • Bluetooth 5.0 gives wireless streaming with memory pairing
  • 300 W × 2 drives passive speakers from a TPA3255 chip
  • SNR 108 dB and THD 0.005 % deliver clean audio detail
  • Bass and treble controls let you tune sound to taste
  • Swappable NE5532 op-amps support LME49720HA, OPA2134PA, OPA2604AP, LM4562, MUSES02, NJM4556AD for custom tone

300W x2 Class D amplifier

The WUQ BT20A Pro is a two-channel Class D stereo amplifier built around the TI TPA3255 chip. It delivers 300 watts per channel into passive speakers and includes Bluetooth 5.0 wireless input with a removable antenna. Bass and treble controls allow direct tonal adjustment, and two socketed NE5532 op-amps can be swapped for compatible alternatives such as LME49720HA, MUSES02, OPA2604AP, OPA2134PA, LM4562 or NJM4556AD. A 32 V 5 A power adapter and AC cord are included.

Home listeners wanting wireless convenience

This amplifier suits anyone driving a pair of passive bookshelf or floor-standing speakers from a phone, tablet or computer without running cables. The front-panel bass and treble knobs give immediate sound shaping, and the op-amp sockets invite simple experimentation. Buyers who need phono pre-amplification, digital optical or HDMI inputs, multi-room streaming protocols, or a dedicated subwoofer output should look at other products.

TI TPA3255 chip with 108 dB SNR and 0.005 % THD

The TPA3255 integrated circuit sets the fundamental performance envelope: a signal-to-noise ratio of 108 dB and total harmonic distortion of 0.005 % at rated power. Its high-speed gate-driver error-correction feedback topology keeps idle loss below 2.5 W. This specification determines whether the amplifier meets a listener’s transparency and efficiency requirements for a given speaker system.

Highlights

  • Bluetooth 5.0 gives wireless streaming with memory pairing
  • 300 W × 2 drives passive speakers from a TPA3255 chip
  • SNR 108 dB and THD 0.005 % deliver clean audio detail
  • Bass and treble controls let you tune sound to taste
  • Swappable NE5532 op-amps support LME49720HA, OPA2134PA, OPA2604AP, LM4562, MUSES02, NJM4556AD for custom tone

Specifications

TypeOther

Questions about this item

Does the box include everything needed to power passive speakers or must anything be bought separately?

The package contains the BT20A Pro amplifier, a Bluetooth antenna, a 32V/5A power adapter, an AC cord and a user manual. Only passive speaker cables are required separately.

Which Op-Amp versions can be swapped into the BT20A Pro for different sound signatures?

The two plug-in NE5532 Op-Amps can be replaced with LME49720HA, MUSES02, OPA2604AP, OPA2134PA, LM4562 or NJM4556AD units.

What does the 300W x 2 rating mean for everyday listening with passive speakers?

The TPA3255 chip delivers 300 Watts per channel with SNR 108dB and THD 0.005%, giving high-efficiency Class D power and low idle loss below 2.5W for clean output at typical volumes.

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