Onkyo TXNR646 Atmos AV Receiver

Onkyo TXNR646 (Black)

Atmos AV Receiver

Out of stock

Unfortunately this product is no longer available.

For advice on an alternative product or details of newer ranges, please contact Telesales here or your local store which you can find here.

Phil, Telesales Manager, 15th year of service

Check out what has to be the home cinema sensation of the year! The Onkyo TXNR646 is the first affordable AV receiver equipped with both DTS:X and Dolby Atmos and truly ahead of its time.

Introducing DTS:X

DTS:X is the flagship processor from this highly respected tech company and literally pushes the boundaries of what you can expect from home cinema. This highly sophisticated processor renders images in three dimensions that conventional processing can't match. It also offers other advantages such as the ability to boost the spatial effect of conventional DTS and easily adapts with your existing speaker configuration.

Engineered for Dolby Atmos sound
Optimised for Dolby Atmos, you can be amongst the first to experience the wonder of Dolby Atmos in your own home. Producing a multi-dimensional and totally immersive sound, Dolby Atmos has been hailed as the greatest advance in surround sound for 20 years - so don't miss out!

A powerful performer
Making sure you feel the full impact of DTS:X and Atmos, the Onkyo TX-NR646 boasts a powerful 100w per channel amplifier . The high current design with WRAT (Wide Range Amplifier Technology) and discrete circuitry easily sustains powerful but testing dynamics such as explosions and intense action scenes.

High Resolution sound
As well as offering multi-dimensional surround sound, the Onkyo TXNR646 is compatible with High-Resolution Audio. This gives the highest sound quality, that's far more natural sounding than standard audio. The premium 384kHz/32-bit DAC is compatible with a wide range of HD audio formats, including DSD 5.6 MHz and FLAC 192kHz-24-bit for exceptional sound quality.

Wi-Fi with Spotify and AirPlay
Connect via Ethernet or wi-fi to your home network and gain access to a whole new world of entertainment. From here you'll be able to access a massive range of Internet radio stations plus music services such as the hugely popular Spotify and Deezer. New to this year's model is the introduction of AirPlay, making it easier than ever to stream from your Apple iOS devices, too.

Stream music from your mobile with Bluetooth
With a Bluetooth receiver built in, it's easy to enjoy your music from other devices. Pair with your smartphone, tablet, laptop or PC and wirelessly stream all your favourite music. With the possibility of streaming music services, such as Spotify, Deezer and Tidal, as well as your own music library, you get access to near unlimited music! Advanced Music Optimiser improves the dynamic response from compressed music sources, adding 'sparkle' to the sound and restoring the sound quality.

The latest connections
As you'd expect from this leading AV brand, the TXNR646 comes with the latest connectivity. The TXNR646 features the latest HDMI 2.0a connections and supports HDCP 2.2, which means you can stream UltraHD video and that it's ready for the next generation of 4K discs. With twin HDMI outputs you can also have a second AV display in another room.

Take a listen to just how far home cinema has come in the past few years. With the DTS:X and Dolby Atmos-equipped Onkyo TXNR646 home cinema has never sounded so real.

Click here for link to our blog review

6 Year Supercare £9.99

Add our Supercare to your basket when you check out. We'll cover your items for 6 years and give you your money back if unused.

Lowest price guaranteed!

We’ll beat any genuine advertised price, even from the web & give you up to £100!

We're confident that our prices are amongst the very keenest out there, so we've made it as easy as pie to qualify for our Price Beat. Richer Sounds also guarantees to beat web prices, and Price Beat is even valid for 7 days after purchase, so if you've seen a cheaper price, let us know, and we'll happily beat that price by up to £100!

Products must be brand new, boxed, carry a comparable guarantee and be in stock at time of purchase. Richer Sounds price used to compare will be net of any voucher / trade in discounts.
T&Cs apply

Buy now, pay later available
on purchases over £500

We offer 6 month interest free options. Call or ask in-store for details

For purchases over £500, pay a 10% deposit now and the balance in 6 months. Pay the balance in full before the end of the 6 months and there is no interest to pay whatsoever, just a one-off settlement fee of £29. Find out more

 Disabled assistance

Richer Sounds are happy to offer FREE delivery on all our products to blind, partially sighted and disabled customers.

Please place orders online, then contact webaftersales@richersounds.com who will advise on how to arrange the refund of your delivery charge
Check out what has to be the home cinema sensation of the year! The Onkyo TXNR646 is the first affordable AV receiver equipped with both DTS:X and Dolby Atmos and truly ahead of its time.

Introducing DTS:X

DTS:X is the flagship processor from this highly respected tech company and literally pushes the boundaries of what you can expect from home cinema. This highly sophisticated processor renders images in three dimensions that conventional processing can't match. It also offers other advantages such as the ability to boost the spatial effect of conventional DTS and easily adapts with your existing speaker configuration.

Engineered for Dolby Atmos sound
Optimised for Dolby Atmos, you can be amongst the first to experience the wonder of Dolby Atmos in your own home. Producing a multi-dimensional and totally immersive sound, Dolby Atmos has been hailed as the greatest advance in surround sound for 20 years - so don't miss out!

A powerful performer
Making sure you feel the full impact of DTS:X and Atmos, the Onkyo TX-NR646 boasts a powerful 100w per channel amplifier . The high current design with WRAT (Wide Range Amplifier Technology) and discrete circuitry easily sustains powerful but testing dynamics such as explosions and intense action scenes.

High Resolution sound
As well as offering multi-dimensional surround sound, the Onkyo TXNR646 is compatible with High-Resolution Audio. This gives the highest sound quality, that's far more natural sounding than standard audio. The premium 384kHz/32-bit DAC is compatible with a wide range of HD audio formats, including DSD 5.6 MHz and FLAC 192kHz-24-bit for exceptional sound quality.

Wi-Fi with Spotify and AirPlay
Connect via Ethernet or wi-fi to your home network and gain access to a whole new world of entertainment. From here you'll be able to access a massive range of Internet radio stations plus music services such as the hugely popular Spotify and Deezer. New to this year's model is the introduction of AirPlay, making it easier than ever to stream from your Apple iOS devices, too.

Stream music from your mobile with Bluetooth
With a Bluetooth receiver built in, it's easy to enjoy your music from other devices. Pair with your smartphone, tablet, laptop or PC and wirelessly stream all your favourite music. With the possibility of streaming music services, such as Spotify, Deezer and Tidal, as well as your own music library, you get access to near unlimited music! Advanced Music Optimiser improves the dynamic response from compressed music sources, adding 'sparkle' to the sound and restoring the sound quality.

The latest connections
As you'd expect from this leading AV brand, the TXNR646 comes with the latest connectivity. The TXNR646 features the latest HDMI 2.0a connections and supports HDCP 2.2, which means you can stream UltraHD video and that it's ready for the next generation of 4K discs. With twin HDMI outputs you can also have a second AV display in another room.

Take a listen to just how far home cinema has come in the past few years. With the DTS:X and Dolby Atmos-equipped Onkyo TXNR646 home cinema has never sounded so real.

Click here for link to our blog review
Active Subwoofer Output Yes
Apple AirPlay Yes
Audio Inputs 4
Bluetooth Yes
Channels 5.1.2
Coaxial Inputs 1
Coaxial Outputs No
Component 2 in
Dimensions WxDxH (mm) 435 x 329 x 173.5
Dimensions WxHxD (mm) 32.9 x 43.5 x 17.4
DLNA Compliant Yes
Dolby Atmos Yes
Dolby ProLogic Surround Dolby Surround
DTS Yes
HDMI Audio Yes
HDMI text 8 in/2 out
HDMI Zone Out Yes
Internet Radio Services Yes
Multi Channel Input Yes
Multiroom No
NFC No
Optical Inputs 2
Optical Outputs No
Phono Input Yes - MM
Power Consumption- Normal Use 630
Power Consumption - Standby 0.15
Power Output - Watts per CH 160 x 7
Remote Control Yes
App Control Yes - iOS and Android
Tuner Radio FM/AM
USB 1
Weight (KG) 9.4
Wireless Connection Yes
Brand Onkyo
Colour Black
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Unfortunately this product is no longer available.

For advice on an alternative product or details of newer ranges, please contact Telesales here or your local store which you can find here.

Phil, Telesales Manager, 15th year of service

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6 Year Supercare £9.99

Add our Supercare to your basket when you check out. We'll cover your items for 6 years and give you your money back if unused.

6 YEAR SUPERCARE COSTS JUST £9.99 ON ALL ITEMS UNDER £100, OR 10% OF PURCHASE PRICE ON ANYTHING OVER £100.

We think you’ll agree that our Supercare guarantee offers fantastic value. What’s more, if you don’t use our it in the 6 year period, we’ll refund the cost of it. You really can’t say fairer than that!
Plus, if we can’t fix a fault, we will give you a like-for-like replacement.
Find out full details here.

Lowest price guaranteed!

We’ll beat any genuine advertised price, even from the web & give you up to £100!

We're confident that our prices are amongst the very keenest out there, so we've made it as easy as pie to qualify for our Price Beat. Richer Sounds also guarantees to beat web prices, and Price Beat is even valid for 7 days after purchase, so if you've seen a cheaper price, let us know, and we'll happily beat that price by up to £100!

Products must be brand new, boxed, carry a comparable guarantee and be in stock at time of purchase. Richer Sounds price used to compare will be net of any voucher / trade in discounts.
T&Cs apply

Buy now, pay later available
on purchases over £500

We offer 6 month interest free options. Call or ask in-store for details

For purchases over £500, pay a 10% deposit now and the balance in 6 months. Pay the balance in full before the end of the 6 months and there is no interest to pay whatsoever, just a one-off settlement fee of £29. Find out more

 Disabled assistance

Richer Sounds are happy to offer FREE delivery on all our products to blind, partially sighted and disabled customers.

Please place orders online, then contact webaftersales@richersounds.com who will advise on how to arrange the refund of your delivery charge