QLS-HiFi QA100 100WPC 24Bit /192KHz Class T TAS516 Digital Stereo Amplifier

SKU: FM342
Price: US$434.98
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  • Use high quality components and materials
  • Control volume and select the input channel
  • A stereo 100 Watt amplifier with 5 single digital audio input
  • Selected for the best sonic performance and long durability



QA100 is a true digital amplifiers, a stereo 100 Watt(@4Ω)amplifier with 5 single digital audio input.

   Traditional amplifiers input and process analog signals, which will generate various negative factors that may impact the sound effect, such as distortion, frequency attenuation and bad channel separation. QA100 directly process and amplify the input digital signals,The whole process mostly transits and processes digital signals with an anti-jamming capability higher than analog signals, It is this very reason why digital amplifier tends to generate better sound effects than analog amplifier.

   QA100 can automatically recognize and support 16bit and 24bit 32K-192K stereo PCM digital signal input. The asynchronous sampling rate conversion (ASRC) technology is adopted. Combined with high-precision temperature compensated crystal to reform digital clock, it can drastically reduce jittering of digital clock and provide signals with smaller noises, a larger amount of information and higher precision to the amplifier. In the meantime, impact of input digital signals on the acoustics is also reduced, which therefore drastically lowers requirement for the front sound source.


  • True digital stereo amplifier.
  • It is designed using high quality components and materials, selected for the best sonic performance and long durability.
  • Remote control control volume and select the input channel, When power off will automatically saved.
  • 7-seg Digital display volume value and the number of the channel.
  • Master Volume: 0 ~ 80;  L/R Volume Trim: -5 ~ +5;
  • Use 2PPM TCXO Crystal for ASRC (crystal JITTER is below 10PS) .
  • Digital input: S/PDIF coaxial RCA、S/PDIF coaxial BNC、optical toslink-type digital、AES/EBU digital、IIS/I2S digital.
  • S/PDIF Input chip: CS8416
  • ASRC chip: AD1896
  • Power Stage chip: TAS5162 *2
  • Sampling Rate: 16bit  24bit  32K-192K stereo digital input.(Auto detect)
  • Power output, 4 Ω  100W  * 2CH
    Power output, 8 Ω  60W * 2CH
  • Total hamornic distortion (-2.5dBFS, 8 Ω) <0.06 %
  • Dynamic Range, a-weighted 101 dB
  • Signal-to-noise ratio 102 dB
  • Channel separation 92 dB
  • Frequency response, audio range (20Hz - 20kHz) +/-0.5dB, 8 Ω
  • Input Voltage: AC 90V ~ 240V 50/60Hz
  • Speaker Impedance range: 2-8 Ω
  • Dimensions approx. 11.4" x 9.45" x 2.4" (with all the sockets)
  • Package weight: Approximately 3kg
  • Package Dimension: L440 X W300 X H110(mm)


Internal PCB board:
(In order to improve the quality and sound quality, components are subject to change without notice.)


QA100--Full Digital Stereo Amplifier PCB Board

  QA100 Amplifier *1
  Remote Control * 1(not include battery for remote control)
  Power cable  *1
  RCA cables for S/PDIF coaxial RCA digial input *1

User Guide *1

Customer Questions & Answers


Hi.  I'm interested in this amplifier and have a question. Is it possible to change the power cable to a version with a german plug? It's no problem for me to by a power cable separately, but you don't offer any cable usable in Germany, right?  Regards.  Marco

6/15/14 5:37 AM Asked.

Hi, I just have UK Power Cord, USA Power Cord, Chinese Power Cord, Australia Power Cord and Eur Power Cord. Thanks

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Hello.  Did it's possible to ship the item by China Post and pay by PayPal ?  Regards.

2/14/17 7:05 AM Asked.

Hi Francis,the QLS-HiFi QA100 had stop product.Please choose others product.Thank you.

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Ian MacDonald
Ian MacDonald

any idea where I can get one of these? I need one to finish out a multi way speaker set up.

1/25/19 8:25 AM Asked.

Hi, this product has stopped production.Thank you!

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