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AV Processors

Tonewinner AT-300

Tonewinner AT-300 Custom Preamp 9.3.4/7.3.6 Dolby Atmos Processor

Special Introductory Pricing!


The AT-300 is a professional theatre and music centre integrated audio-video decoder for 9.3.4 setup. It was developed and designed by engineers recognised by the American THX Company. It supports 4K decoding and is Dolby Atmos, DTS:X, and HDMI 2.0 certified. As a multi-functional processor, it can be used in houses, cinemas, and theatres for immersive 3D Hi-Fi sound effects.

As a top 10 audio brand in China, Tonewinner has 30+ years of experience in designing and manufacturing acoustic products. As an original supplier.

Key Features

  • 9.1.4 fully balanced output and 9.3.4 RCA output.
  • Dolby Atmos, DTS:X audio decoding
  • EQ Adjustment - 5 band (bass) + 11band (full frequency channel)
  • HDMI 2.0 - 6 in and 2 out
  • HDMI 2.1 eARC support
  • Dolby-Vision, HDR10, HDR10+ & HLG (Hybrid Log-Gamma) support
  • Up to 1000 millisecond lip synchronization.

Video Processing

  • Panasonic MN864788 chip for HDMI inputs & outputs
  • Up to 32-bits input
  • RGB 4:4:4/YUV 4:4:4 color decoding
  • 3840×2160 4K/60Hz HD video format
  • OSD layer menu for consistent display during setting

DSP Digital Signal Processing

ADSP 21573, the 4th SHARC floating-point processor from Analog Devices, handles the decoding process of Dolby Atmos & DTS: X and the creation of virtual surround and wides.

Audio Processing

Two Cirrus Logic CS42528 audio processors and an ADSP 21573 floating-point processors work together to adjust the frequency response curve, timbre and sound effect, which ensure the separation of sound field and coherence of surround.

4K 18G HDR Support for Life-like Vison

18 Gbps data transfer speeds and 3840×2160 4K video decoding bring better contrast and brightness. It also handles HDMI2.1, HDCP2.2 and is compatible with HDR (HDR10/HDR10+/HLG/Dolby Vision).

Original Easy Test EQ Room Calibration

Get into the EQ testing with the professional microphone ETM-2.

The Mic will capture the sound information and transfer it to the amplifying part to automatically equalize parameters of each channel. Close balance of all channels will bring better sound effect.

Auto-measure of the distance between speakers and seating position.

Auto-adjustment of delay & sound pressure level.

Auto-calibration of speaker frequency response.

Compensation between full-range channel & bass.


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