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Mini Bluetooth 5.0 DSP Digital Amplifier TPA3221 Integrated Power Amp Receiver

TA-21 is the updated version of NS-20G released in 2021, make much progress in improving output power, sound quality and avoiding heat generation.
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  • Description
  • Reviews
  • Mini size but strong output power: adopting TPA3221 chip, much better than TPA3116 in power and performance, each channel can output up to 100W, easily to drive 3''-10'' speakers, ultra-low heat emitting even when powering floor-standing speakers.
  • Stable and better sound quality: Bluetooth 5.0 version chip with DSP (digital sound processing), up to 50ft connection range makes HiFi music with low signal delay, the sound is clear, no pop and no audible noise via Bluetooth input.
  • 3.5mm AUX and Bluetooth inputs: can match well with much audio devices to provide better sound quality, using buttons but not potentiometer to control the volume to avoid noise, exclusively designed for the audiophiles who pursue HiFi sound.
  • Compact design and perfect details: besides advanced protection circuits, also with input indicators and volume display, clearly to show working status in real time. Cool black aluminium case and crystal copper terminals, practical and powerful.
*DSP is only for Bluetooth input, AUX input without this function.
Warm tips:
1. Default equipped with 24V/3A power supply which is enough for most home speakers, if you want higher output please prepare large power supply by yourself.
2. When plug in AUX cable, TA-21 will default enter AUX input mode. If you want Bluetooth input, please plug out AUX cable.
3. If there is an outage during use, that means the power supply is too small to drive the speaker, please change larger power supply or turn down the volume.

  • Brand: Nobsound
  • Model: TA-21
  • Audio input: 3.5mm AUX / Bluetooth
  • Audio output: banana speaker jacks
  • Bluetooth version: 5.0
  • Max output power: 100W+100W
  • Amp IC chip: TPA3221
  • Matched speaker: 3''-10''/ 4-8Ω
  • Frequency response: 80Hz-20KHz
  • Working voltage: DC 9V-24V / 3A or above
  • Minimum input power: 50W
  • Dimensions(W*D*H): 78*90*23mm / 3.07*3.54*0.91in
  • Net weight: 143g / 0.32lb
  • Package weight: 600g / 1.32lb

Packing List:
  • 1× TA-21 Amplifier
  • 1× 24V Power Adapter
  • 1× Manual
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