Onkyo TX-NR646 Receiversearch

Onkyo TX-NR646 Receiver

Onkyo TX-NR646 Receiver

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Full-Featured Receiver with Bluetooth, Wi-Fi & More

A 7.2-channel network AV receiver with all the latest and greatest features, the Onkyo TX-NR646 delivers powerful, dynamic sound for movies and music alike. Along with built-in Bluetooth and Wi-Fi, it has support for Apple AirPlay, Dolby Atmos, DTS:X, and more. Once you start it up, you’ll find a laundry list of home-theater audio codecs, along with music-streaming services like Spotify, Pandora, SiriusXM Internet Radio, Slacker, and TuneIn. Because the 646 is HDCP 2.2 compliant, you won’t have any issues when 4K Ultra-HD material is more abundant. Finally, Onkyo’s slick remote app allows you to control basic functions using your iOS and Android devices.

Onkyo TX-NR646 Receiver

Powerful Sound, Connections Aplenty

Rated at 170 watts, the 646 has no shortage of power, and uses a high-grade AK4458 DAC to offer some really impressive music playback for the price. This receiver decodes a wide range of high-res, lossless, and compressed audio files, including MP3, WMA, WMA Lossless, FLAC, ALAC, WAV, OggVorbis, AAC, Apple Lossless, and DSD 5.6 MHz. And of course, it comes packed with the connectivity options we’ve come to expect from Onkyo. Along with eight HDMI inputs and two outputs, you’ll find seven analog connections (including a phono input), three digital inputs, and two composites—plus powered zone 2 outputs and zone 2 line-outs for multi-room setups.

Onkyo TX-NR646 Receiver
Onkyo TX-NR646 Receiver


  • Onkyo
  • Channels: 7.2
  • Processing: High-grade AK4458 DAC
  • Power supply: AC 120 V, 60 Hz
  • Power consumption: 6.4 A
  • No-sound power consumption: 70 W
  • Standby power consumption: 0.1 W
  • Dimensions: 17.1 x 6.9 x 13 in (43.5 x 17.4 x 32.9 cm)
  • Weight: 20.7 lb (9.4 kg)


  • Power output, all channels: 170 W/ch, 6 ohm, 1 kHz, 0.9% THD, 1 channel drive, FTC; 100 W/ch, 8 ohm, 20 kHz–20 kHz, 0.08% THD, 2 channels driven, FTC)
  • Dynamic power: 240 W (3 ohm, front); 210 W (4 ohm, front); 120 W (8 ohm, front)
  • THD + N: 0.08% (20 kHz–20 kHz, half power)
  • Damping factor: 60 (front, 1 kHz, 8 ohm)
  • Input sensitivity and impedance: 200 mV/47 kohm (line); 3.5 mV/47 kohm (phono MM)
  • Rated RCA output and impedance: 100 mV/2.2kohm (zone 2 line out); 200 mV/470 ohm (subwoofer pre-out)
  • Max RCA output and impedance: 1 V/2.2 kohm (zone 2 line out); 2 V/470 ohm (subwoofer pre-out)
  • Phono overload: 70 mV (MM, 1 kHz, 0.5%)
  • Frequency response: 10 Hz–100 kHz/+1 dB, -3 dB (Direct Mode)
  • Tone control: +/- 10 dB, 20 Hz (bass); +/- 10 dB, 20 kHz (treble)
  • Signal-to-noise ratio: 100 dB (line, IHF-A); 80 dB (phono MM, IHF-A)
  • Speaker impedance: 6–10 ohm


  • Input sensitivity/output level and impedance: 1 Vp-p/75 ohm (component), 0.7 Vp-p/75 ohm (component PB/CB, PR/CR), 1 Vp-p/75 ohm (composite)
  • Component video frequency response: 5 Hz–13.5 MHz / + 0 dB, - 3 dB


  • Tuning frequency range, FM: 87.5 MHz–107.9 MHz
  • Tuning frequency range, AM: 530 kHz–1,710 kHz
  • FM/AM preset memory: 40 stations


All orders will be shipped by Massdrop.

Estimated ship date is Apr 8, 2016 PT.

After the drop ends, payment will be collected and the group’s order will be submitted to the vendor up front, making all sales final. Check the discussion page for updates on your order.