Yamaha RX-A840 7.2 Channel Wi-Fi Network Aventage Home Theater Receiver, 240 Watts at 2 Ohms Dynamic Power, 8 Input/ 2 Output HDMI, AirPlay

The Yamaha RX-A840 7.2 Channel Wi-Fi Network Aventage Home Theater Receiver delivers powerful multi-channel audio performance and video upscaling. This receiver delivers up to 130W per channel at 8 ohms and can upscale video sources to near UHD 4K quality. Yamaha YPAO sound optimization technology is onboard to help you tailor the sound of the receiver to your listening space with the included setup microphone. The receiver's front panel USB port is compatible with Apple devices like iPhones and iPods and can also be used to connect other USB music sources. Additionally, there's an HDMI port on the front panel that accepts MHL connections from devices like smartphones.

The Yamaha RX-A840 features Apple AirPlay for wireless music streaming from compatible devices. You can also use the receiver's Ethernet port or built-in Wi-Fi for Internet connectivity and once connected you can take advantage of the receiver's enhanced network features like Pandora, Spotify and DLNA content sharing. You can also download the free Yamaha AV Controller app for Android or iOS for enhanced receiver control. Eight HDMI inputs are onboard for connecting high-definition video and audio sources. There are also two HDMI outputs for displaying video on an external display. Two digital optical and two digital coaxial inputs are also built-in for interfacing additional audio sources. Additionally, this receiver decodes high-resolution surround sound formats such as Dolby TrueHD and DTS-HD for producing a dynamic multi-channel audio experience.

Total Purity Concept
The Total Purity Concept encompasses high drive amp technology, high purity pre-amplification, anti-vibration technology and independent pure power supplies. This model has a fully discrete power amplifier that helps to minimize distortion. It also has independent pure power supplies, allowing dedicated power supplies for the analog and digital circuitry to prevent digital noise from affecting analog circuitry. The anti-vibration heat-sinks are designed to suppress vibration from transistors and sound pressure. Independent power supplies for the DACs are designed to further eliminate noise on certain models.

Anti-Resonance Technology
The Anti-Resonance Technology Wedge (A.R.T. Wedge) is a fifth foot in the center of the unit. It dampens vibrations from the power transformer, power transistors and heat sinks, as well as vibrations that might be caused by the sound from the speakers.

Aluminum Front Panel Offers Visual and Aural Benefits
The aluminum front panel is used to effectively shield sensitive circuitry from external noise and electronic radiation generated by dimmer switches, fluorescent lighting, video monitors and more. This helps to ensure optimum sonic performance in the widest range of installation environments.

Network Functions
This AV receiver provides a variety of network functions that enable you to access more sources and also enhance operation. You can connect the receiver to a PC to enjoy Internet radio, Pandora, Spotify and operate your system via Web Browser Control. The AV Controller App (from iTunes or Google play) lets you control various functions from your iPod, iPhone, iPad or Android phones / tablets and the Kindle Fire.

Built-In Wi-Fi and Wireless Direct
Built-in Wi-Fi allows wireless connection with your household wireless router, simplifying system connections to enjoy network audio and music streaming services. If no Wi-Fi router is available, the Wireless Direct feature not only allows you to stream music directly from your Smartphone or tablet via the AV Controller App's Music Play feature, Apple Airplay etc., but also control your receiver using the AV Controller App.

Airplay Music Streaming
This AV receiver supports Airplay, which means it can accept wireless music streaming from the iPod touch, iPhone or iPad, as well as from iTunes on a Mac or PC. This makes it easy to enjoy music from your mobile devices or computer on your home theater system. You can use view metadata such as song title, artist name as well as album art via AV receivers on-screen display. Album art support may vary, please check with the manufacturer for details.

HTC Connect for Wireless Streaming
HTC Connect lets you stream music to your AV receiver wirelessly. You don't need a separate app because HTC Connect is built right into select HTC phones. Simply swiping the HTC phone screen starts music output to the AV receiver, from the HTC device's local music sources or third party music sources.

MHL (Mobile High-Definition Link) Support
MHL provides a direct connection of compatible mobile phones to this AV receiver. Playback of up to 1080p video and multichannel audio from the phones is supported. The receiver also charges the connected phone. Play, stop and other basic operations can be controlled from the remote control.

Spotify Connect
With the Spotify app on your Smartphone, you can access a vast library of songs. And you can stream those songs to your Yamaha receiver by using Spotify Connect. Just hit "play" to start streaming music. Furthermore, when you're listening on your Smartphone outside and come inside, the song immediately streams to your receiver so you can enjoy uninterrupted music. You can also personalize playlists and receive phone calls while listening to music.

USB Digital Connection for iPod and iPhone on the Front Panel
A USB port on the front panel allows convenient connection of an iPod / iPhone, which also charges when connected. Because the digital signal from the iPod / iPhone is transmitted directly to the AV receiver, there is no signal loss or interference for optimal audio playback. In addition, you can use the receiver's remote control unit to operate the iPod / iPhone music playback functions.

Extensive Audio Codec and Format Support
This AV receiver is compatible with many audio formats such as Dolby True HD and DTS-HD Master Audio. It is also compatible with high resolution audio codec such as FLAC/WAV/Apple Lossless.

Gapless Playback
Many live and classical albums have no gaps in the music. Gapless playback ensures that there are no pauses between audio files. This provides playback with no interruptions, the way it was meant to be heard.

4K Ultra HD Pass-through and Up scaling
This AV receiver's HDMI input / output supports 4K (50/60p) Ultra HD video image pass-through. It also can perform 4K Ultra HD up scaling to boost a lower resolution image to near 4K quality. This helps to ensure compatibility with high resolution video formats.

Support for HDMI 2.0 Specification
This model supports HDMI 2.0 connectivity. It supports 4K Ultra HD 50 Hz/60 Hz signal pass-through to output smooth-motion high definition videos.

YPAO Reflected Sound Control Sound Optimization
YPAO R.S.C. analyzes room acoustics and measures various speaker characteristics, then calibrates audio parameters to achieve optimum sound. It employs Reflected Sound Control to correct early reflections for studio-quality sound. It also provides DSP Effect Normalization, which varies the CINEMA DSP parameters according to the reflected sounds.

YPAO Volume
YPAO Volume applies loudness EQ correction to automatically adjust high and low frequency levels as volume changes. Using the YPAO measurement results, EQ correction is optimized to your system settings and listening environment.

Subwoofer Trim Control
The Subwoofer Trim Control enhances the low frequencies by avoiding overlap with the front speaker output. This designed to produce a clean, focused sound stage while providing a seamless frequency response. When subwoofer frequency overlap occurs in conventional systems, the overall sound is "pushed" toward the subwoofer.

Dialogue Lift and Dialogue Level Adjustment
Dialogue Lift raises the sound of dialogue from the center speaker to a position in the center of the screen. Virtual Dialogue Lift achieves Dialogue Lift function even without the need for presence speakers. Dialogue Level Adjustment lets you control the volume of the vocal sound, so you hear movie dialogue and music vocals at the ideal level for clear, comfortable listening.

Extra Bass
Yamaha's low-range enhancement technology is designed to deliver rich bass while maintaining good localization and sound balance even with compact front speakers. When a subwoofer is used, it improves the volume of the entire low range of the speaker system, not only the front speakers, but also enhancing the bass from the subwoofer.

Intelligent Amp Assign
Intelligent Amp Assign automatically assigns amplifier channels to certain speakers, depending on what functions are selected. For example, in a 7.1-channel system, when Zone 2 is off, all 7.1 channels will be used in the Main Zone. However, when Zone 2 is on, power to the two surround back channels will be directed to the two speakers in Zone 2 and the Main Zone will receive 5.1 channels of power.

DSP Parameter Adjustment for Easy and Detailed Setting
This AV receiver is equipped with a variety of sound programs that utilize Yamaha's original DSP technology. They allow you to easily create sound fields like actual movie theaters or concert halls in your room and enjoy natural stereoscopic sound fields. You can use the AV Controller App to adjust DSP parameters to your preference to match the type of music / movie or the mood you want to achieve.