amplifier machine
amplifier machine
amplifier machine
amplifier machine

Tonewinner AT-300 custom preamp 9.3.4/7.3.6 Dolby Atmos processor

AT-300 is a professional theater & music center integrated audio-video decoder for 9.3.4 setup. It’s developed and designed by engineers recognized by American THX company. It supports 4K decoding and is Dolby Atmos, DTS:X & HDMI2.0 certified. As a multi-functional processor, it can be used for houses, cinemas and theaters for immersive 3D Hi-Fi sound effect. As a top 10 audio brand in China, Tonewinner has 30+ years experience in designing and manufacturing acoustic products. As an original supplier, Tonewinner always warmly welcomes distributors, partners and customers around the world.

  • Model

  • Channels

  • G.W.

  • THD

  • SNR










9.3.4/ 7.3.6 Decoder for Immersive Sound Effect



It will transport you with breakthrough, 

spatial & realistic audio experience and

bring you a deeper connection to music & images. 

Professional Chips for Professional Decoding

It adopts professional chips with high quality, great performance

and functioning for stable decoding.



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 processor

work together to adjust the frequency response curve, timbre and sound effect,

which ensure the separation of sound field and coherence of surround.

4K 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 series formats.

HDMI 6 in & 2 out & eARC

The eARC simplifies connectivity and provides greater ease of use for

multiple components discovery and brings enhanced audio detail and depth.

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.

More Setting Introduction

RS232 Protocol

Connect your smart home devices to the RS232 port and add more fun to your life

Separate AV Matrix Subgroup

One-click for audio-video synchronization

OSD English Menu

Simple OSD menu with clear options for fast setting. User friendly.

Lossless Music Formats

Support 128G USB disk, TF card & APE, FLAC, WAV, MP3, WMA.

15-meter Bluetooth Transmission

High-speed & stable, low distortion, energy consumption & latency.

Easy connectivity and auto re-connectivity.

Switch any music apps and platforms you want.

Original APP Control

Original music playing center and management interface.

Multi-level folder management.

Song lists of USB disk and TF card on screen.

Easy Firmware Update

Download the latest version into the USB disk and connect it to the USB port.

Reboot the machine and the update is automatically done.

Multiple Connection Options

HDMI 6 in & 2 out, eARC, optical/coaxial input, IR input, USB disk, TF card,

PC Audio, Bluetooth, 5V trigger output, RS232 port.




Rated Input Inpedance: 20kΩ (analog input) Colour: black
Rated Output Inpedance: 1kΩ Crosstalk: ≥80dB (analog direct)
Input level: ≥2VRMS (analog direct)

N.W.: 5kg

Gain: ≥14dB Dimension: 431x100x326mm (W×H×D)
THD: ≤0.02%(1kHz, normal working) Accessories: manual x1, power cord x1, certificate x1, remote control x1, HDMI 4K cable x1
Frequency: 10Hz-50kHz(+1/-3dB, analog direct) Power Voltage: ~100V-~240V(50Hz-60Hz)
SNR: ≥98dB (A weighted, analog direct) /

Model AT-300 Channel 9.3.4/ 7.3.6
SNR ≥98dB(A weight, direct mode) THD ≤0.02% (1KHz,normal working)
Rated input impedance 20kΩ(analog input) Rated output impedance 1kΩ
Frequency 10Hz-50kHz (+1/-3dB, analog direct) Gain ≥14dB (analog direct)
Channel separation >80dB (analog direct) Input level ≥2Vrms (analog direct)
Power vlotage ~100V-~240V (50Hz-60Hz) Default volume range The default volume range is 0-80. Actual gain mode: "-65-15" (-65 to + 15)
N.W. 4.4kg Dimension 431x100x326mm (W×H×D)


AT-300 is a 16 channels home theater AV decoder. This professional processor supports 4K and is Dolby Atmos, DTS:X & HDMI2.0 certified. As a multi-functional decoder, this pre amp can be used for houses, cinemas and theaters for immersive 3D Hi-Fi sound effect. 


Function of 16ch AV decoder


Audio part:

  • Support advanced Dolby Atmos, DTS:X audio decoding, and is backward compatible with

all HD audio format decoding including Dolby True-HD, Dolby Digital Plus, DTS Master, DTS HI RES, etc.

  • Support audio and video matrix grouping.
  • HDMI 2.0 6 inputs and 2 outputs; each input group is independently matrix subgroup matched.
  • Smart room calibration acoustic test.
  • OSD English menu; 5 band (bass) + 11band (full frequency channel) of EQ adjustment.
  • Independent adjustment of each input group EQ.
  • Up to 1000 millisecond lip synchronization.
  • Low frequency management: independent adjust the crossover and slope of front, center, surround, rear, sky channels; bass enhancement.
  • Speaker layout: 5.1, 5.1.2, 5.1.4, 7.1, 7.1.2, 7.3.4, 7.3.6, 9.3.4, etc.
  • 9.1.4 fully balanced output and 9.3.4 RCA output.
  • Support Bluetooth wireless transmission.
  • Support USB disk, TF card local music playback.
  • USB Audio port for PC digital audio input.
  • Support HDMI 2.1 eARC.
  • Support 2 optical, 2 coaxial, 3 stereo audio inputs.
  • Support DRC dynamic range compression processing.



Video part:

  • HDMI 2.0 6 in and 2 out; support audio and video matrix subgrouping.
  • Support 3D, 4K Ultra HD video transmission and processing, and is compatible with all backward video formats.
  • Support Dolby-Vision.
  • Support HDR10, HDR10+.
  • Support HLG Hybrid Log-Gamma.
  • OSD on screen English menu.
  • Support HDMI CEC.
  • Support management of HDMI outputs.


Other Function


Additional functions:

  • Support RS232 protocol.
  • One button to adjust common-use function.
  • Support IR extension (IR extender (without independent power) is not included).
  • Support 5V trigger.
  • Support standby pass-through.
  • Support HDCP2.2 protocol.
  • Support Mobile APP control.
  • Support lock for stored parameter.
  • Support parameter backup.
  • Support one-button factory settings.
  • Support personal parameter setting and saving.
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Leave A Message
If you’re interested in our products or have any suggestions, please leave a message here, and we’ll contact you as soon as possible.