Tonewinner AT-2700

Tonewinner AT-2700: 7-channel Dolby Atmos home-cinema amplifier

Seven amplification channels, Dolby Atmos and DTS:X decoding, built-in acoustic calibration: the AT-2700 brings together the functions of a complete home-cinema system in a compact format. Tonewinner, a Chinese manufacturer active since 1992 in the design of audio electronics (notably as an OEM for other brands), here offers an integrated amp capable of directly driving a 5.1.2 or 5.3.2 setup without external amplification.

Amplification and signal processing

The AT-2700 delivers 120 W per channel into 8 Ω (200 W into 4 Ω), enough headroom to power floorstanding speakers or compact satellites. Digital processing is handled by an Analog Devices ADSP-21573 SHARC dual-core DSP, in charge of Dolby Atmos, Dolby TrueHD, DTS:X and DTS Virtual:X decoding. Analog-to-digital and digital-to-analog conversion is provided by two Cirrus Logic CS42528 chips, components commonly used in mid- and high-range AV receivers for their low distortion and wide dynamic range.

DTS Virtual:X technology makes it possible to simulate a height effect using traditional speakers, which can be handy when no ceiling speakers are available, even if the result remains less precise than a real physical Atmos configuration.

ETQ calibration and parametric equalization

The Easy Test EQ (ETQ) system, developed by Tonewinner, automates the acoustic tuning of the room. With a measurement microphone (sold separately), the unit analyzes the frequency response of each speaker, measures distances and adjusts levels, delays and tone. The result is displayed as a curve in the OSD menu overlaid on the television image, allowing you to visualize the corrections applied.

To go further, the AT-2700 offers per-channel parametric equalization. The front channels provide 11 adjustable bands, while the surround, height and subwoofer channels each benefit from 5 bands. This degree of adjustment makes it possible to correct localized resonances or tailor the sound signature to your preferences. Several profiles can be stored and associated with different inputs.

Video section and HDMI connectivity

Video processing is handled by a Panasonic MN864788 chip, compatible with 4K/60 Hz in RGB 4:4:4 and YUV 4:4:4. The unit supports HDR10, HLG and Dolby Vision streams on its four HDMI 2.1 inputs (HDCP 2.2). The two HDMI outputs allow you to connect a television and a projector simultaneously; one of them handles eARC to retrieve the audio track from the TV’s built-in apps.

3D compatibility is maintained for users who still have 3D projectors or TVs. However, HDMI bandwidth tops out at 18 Gb/s, which rules out 4K/120 Hz or 8K signals: a point to consider for gamers with latest-generation consoles.

Audio connectivity and pre-out outputs

Beyond HDMI, the AT-2700 accepts three analog sources via stereo RCA inputs, plus one optical and one coaxial input for digital sources (CD player, TV box). The USB-A port and microSD card reader allow playback of audio files without an external source: FLAC, APE, WAV, MP3 and WMA are supported, with up to 128 GB of storage.

The 7.3-channel pre-out output opens the door to external amplification if the built-in power is not enough or if you want to upgrade the system. The three independent subwoofer outputs allow the use of multiple subwoofers to smooth low-frequency response in the room, a configuration appreciated in dedicated theaters.

Bluetooth and remote control

The built-in Bluetooth receiver ensures wireless streaming from a smartphone or tablet. The stated range is up to 15 meters, and automatic reconnection avoids having to re-pair the device each time you use it. The Tonewinner mobile app provides access to settings, navigation through files stored on a USB drive or SD card, and volume control. The graphical interface handles up to 8 folder levels, making it easier to organize large music libraries.

A 12 V trigger output can automatically power on a power amplifier or a screen lift system. The infrared input allows integration into a centralized control system.

Technical specifications

Audio section

• 7-channel amplifier
• Possible configurations: 2.0 / 2.1, 5.1, 7.1, 5.1.2 Dolby Atmos, 5.3.2
• Output power
  • 120 W RMS per channel at 8 Ω
  • 200 W per channel at 4 Ω
• Frequency response: 10 Hz – 20 kHz
• Signal-to-noise ratio: 90 dB
• Harmonic distortion: less than 0.05%
• Audio decoding
  • Dolby Atmos
  • Dolby TrueHD
  • DTS:X
  • DTS Virtual:X

Video section

• 4K UHD resolution up to 60 Hz
• HDR10, Dolby Vision and HLG compatibility
• 3D support
• HDMI 2.1 with HDCP 2.2

HDMI connectivity

• 4 HDMI 2.1 inputs
• 2 HDMI outputs including one with eARC

Audio connectivity

• 3 analog RCA inputs
• 1 optical input
• 1 coaxial input
• 7.3 pre-out output
• 3 independent subwoofer outputs

Additional connectivity

• Bluetooth
• USB-A port
• micro-SD / TF card reader
• Trigger output
• Infrared input

Features

• Easy Test EQ automatic acoustic calibration
• Customizable parametric equalization
• Bluetooth audio streaming from smartphone or tablet
• Audio playback in FLAC, APE, WAV, MP3, WMA formats
• Mobile control app
• OSD menu displayed on the TV

General information

• Dimensions: 43 × 14.9 × 39.1 cm
• Weight: 11.7 kg
• Power supply: 110 – 230 V