Denon AVR-S660H: Fully equipped AV receiver

Denon AVR-S660H occupies a junior position in the branded line of AV receivers with the “S” index. This model supports 8K/60 Hz resolution and has five high-current amplifiers equipped with discrete elements that can handle even low-impedance speaker systems. The stated maximum power is 135 W per channel (6 ohms). The model works with most of the current modern surround sound formats, including Dolby True HD and DTS-HD Master Audio. The Audyssey MultEQ system, supplemented with Dynamic EQ (frequency response optimization) and Dynamic Volume (volume optimization) technologies, calibrates the speakers connected to the AV receiver.

The Denon AVR-S660H receiver can be used as a streamer with access to playing audio content stored on local network media (computers/NAS servers) or on external drives connected via a USB port integrated into the front of the case. It supports playback of Hi-Res audio files in WAV, ALAC, FLAC (up to 24 bit/192 kHz) and DSD up to 5.6 MHz formats. Various online services are also available, including Tidal, TuneIn, Deezer, Spotify Connect, etc.

The Denon AVR-S660H has Bluetooth and dual-band Wi-Fi on board, which improves reception quality. The new AirPlay 2 protocol is supported, with which it is possible to build a wireless multiroom system based on iOS devices. The receiver is capable of working as part of the proprietary HEOS wireless ecosystem, which allows you to control all of its devices through one application, to which you can stream audio from tablets and smartphones, local networks and streaming services. When organizing a multi-room installation based on HEOS components, the same track can be played synchronously in different rooms or different music can be transmitted to selected rooms.

To control the Denon AVR-S660H, in addition to the application or remote control, it is convenient to use personal voice assistants Google Assistant, Apple Siri or Amazon Alexa, with which this AV receiver supports “communication”. To configure the receiver, the intuitive Setup Assistant program is used.

The Denon AVR-S660H features five HDMI inputs supporting the latest HDCP 2.3, 8K video, as well as HDR10, HLG and Dolby Vision video standards. The only HDMI output allows you to work with eARC – an extended return channel, which ensures the transmission of multi-channel audio in Dolby True HD formats and others from the TV panel directly to the receiver. The model has an MM phono stage for connecting vinyl players, and five pairs of color-coded screw terminals are used to connect speakers.

Specifications Denon AVR-S660H

Output power 75 W per channel (8 ohms, 20 Hz – 20 kHz, THD: 0.08%, 2 channels active), 100 W per channel (6 ohms, 1 kHz, THD: 0.7% , 2 channels active), 135 W per channel (6 Ohms, 1 kHz, THD: 1%, 1 channel active)
Input sensitivity 200 mV (line input), 2.5 mV (MM phono stage)
Frequency range 10 Hz – 100 kHz (+ 1, – 3 dB, Direct mode, analog connectors)
Signal-to-noise ratio 98 dB (analog line connectors, Direct mode)
AM/FM tuner
Built-in decoders (main) DTS-HD Master Audio, DTS-HD High Resolution Audio, DTS Neo:6, DTS Digital Surround, DTS 96/24, DTS Express, Dolby Digital Plus, Dolby Pro Logic II, Dolby TrueHD
Direct mode
Supports HEOS wireless multiroom network
Supported audio formats (LAN and USB) MP3, WMA , AAC, FLAC, FLAC HD (up to 24bit/192kHz), ALAC (up to 24bit/192kHz), WAV (up to 24bit/192kHz), DSD (up to 5.6MHz)
Compressed audio decompression supported
Playback mode gapless (no pauses) for FLAC, WAV, ALAC, DSD
Web services TuneIn, Spotify Connect, Tidal, Deezer, Amazon Prime Music, etc. Automatic
speaker calibration system Audyssey MultEQ
Technologies Audyssey Dynamic EQ/Dynamic Volume
Wi-Fi IEEE 802.11a/ b/g/n, 2.4/5 GHz
Bluetooth version 4.1, maximum range: up to 30 m
AirPlay/AirPlay 2 support
8K Ultra HD 4K support (50/60 Hz, 4:4:4 Pure Color)
Voice control with using Amazon Alexa, Google Assistant, Apple Siri
Setup Assistant setup system
Inputs 6 x HDMI (8K/60 Hz, HDCP 2.3, HDR10, Dolby Vision, HLG, BT.2020), 2 composite, 2 line RCA, MM phono input ( RCA), 2 optical, USB for external drives (on the front panel), LAN interface
HDMI outputs (8K/60 Hz, HDCP 2.3, ARC, eARC, CEC), composite, Pre Out for two active subwoofers (2 RCA connectors) , 6.3 mm headphone jack
Other connections 3.5 mm jack for calibration microphone, AM/FM antenna jacks, 2 Wi-Fi/Bluetooth antenna jacks, ground terminal
Supports CEC control protocol for working with Smart TV
Terminals for speakers 5 pairs of color-coded screw terminals (4-16 ohms)
Dimensions (WxHxD) 434x151x329 mm (without antennas), 434x151x339 mm (Wi-Fi/Bluetooth antennas in horizontal position); 434x215x339 mm (Wi-Fi/Bluetooth antennas in vertical position)
Weight 7.8 kg

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