Pioneer 9.2 Channel AV Receiver - SCLX704

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Equipped with the 6th generation of Direct Energy HD Amplifier, the SC-LX704 is worthy of being your home cinema’s centerpiece, and an ideal combination for Pioneer’s flagship universal disc player. Two ES9026PRO DACs ensure quality audio reproduction, while MCACC Pro Auto Room Tuning technology with Full Band Phase Control brings out the best from 3D surround sounds of IMAX® Enhanced, Dolby Atmos®, and DTS:X. Enjoy rich, vibrant sound with PQLS jitterless transmission. The new Audio Exclusive Mode and AV Direct Mode enhance detailed sound reproduction by turning off the unused functions to eliminate unwanted noise.

  • Direct Energy HD Amplifier
  • MCACC Pro Auto Room Tuning
  • IMAX Enhanced*
  • ESS 384 kHz/32-bit DAC

Direct Energy HD Amplifier

Continuously evolving throughout the years, Pioneer’s Direct Energy HD Amp has now reached the 6th generation. New power coils are adopted for the ideal speaker drive, as well as new custom film capacitors co-developed with Shinyei Capacitor for the ultimate sound. The power supply and patterning has been developed through repeated tuning. Also, the entire transmission path from the pre stage to the power stage has been changed to balanced circuitry, to transmit noise-free high-quality signals to the power stage.

MCACC Pro Auto Room Tuning

MCACC Pro, the pinnacle of Pioneer’s auto room tuning technology, analyzes the phase and group delay characteristics to precisely control phase differences between speakers. MCACC Pro corrects phase differences in all ranges and all channels, from phase difference in the original audio material to the sound emitted from the speakers. Required microphone included.

IMAX Enhanced

The VSX-LX504 is IMAX Enhanced*, certified to deliver the powerful sound just as intended by the filmmaker, and provide the immersive experience on your home theater.

ESS 384 kHz/32-bit DAC

Two 384 kHz/32-bit ESS DACs (ES9026PRO), same as the ones used for Pioneers PD-70AE SACD player, are used for all channels. With extremely precise D/A conversion and high S/N ratio, the DAC provides powerful sound full of rich details.

Dolby Atmos

You can reproduce object-oriented sound in smooth, curving movements, or the realistic three-dimensional movement overhead by the top speakers.


Can automatically adapt the audio to the existing channels and speaker system, no specific speaker layout is required.

Full Band Phase Control

Pioneer’s Phase Control technology effectively eliminates phase lag and significantly improves the multi-channel sound without any extra operation. Furthermore, The Full Band Phase Control technology focuses on the group delay in the speaker network filter, and adjusts the phase of each unit as well as the group delay for each speaker. Multi-range speakers gain the sound coherence of full-range speakers, while retaining the wide frequency range advantage. In an environment where the phase of all units and all channels are precisely controlled, a remarkably clear sound location with a surrounding feel is achieved. In combination with MCACC Pro, the ideal multi-channel reproduction environment can be created, which faithfully replicates object audio and the intention of the original content developer.

PQFA Jitterless Sound Processing for Network/USB

With PQFA (Precision Quartz File-based Audio), clocks are available for each stage of input, digital signal processing, and D/A conversion, and the shorter path prevents jitter from occurring. Additionally, a high-precision clock IC (OSC) is used to realise D/A conversion with significantly less jitter.

PQLS Jitterless Sound Transmission

With the precision quartz controller on the AV receiver, Precision Quartz Lock System (PQLS) eliminates distortion caused by timing errors. It controls the amount of audio signals from the AV receiver to the Pioneer universal disc player connected via HDMI, giving the best possible digital-to-analog conversion.

Audio Exclusive Mode

Interference from video signals is eliminated by turning off the video signal path via HDMI. You can enjoy detailed sound, full of spatial feel.

AV Direct Mode

The feature turns off the network functions to suppress digital noise within the AV receiver, and improves sound quality for analog playback, digital input, HDMI playback etc. Mode 1 turns off the network module operation clock, while Mode 2 shuts down the network power completely for more superior sound.

Works with Alexa

Works with Alexa makes you control SC-LX704 with your voice via Alexa-enabled device such as the Amazon Echo, to play, pause, and skip titles or control the volume. You can enjoy the music via streaming service such like Amazon Music by selecting song title, artist name, release year, and genre.

Ready for 4K HDR entertainment

Enjoy support for HDR (High Dynamic Range) video including HDR10, HLG, Dolby Vision®, and BT.2020. The 4:4:4 color space is also supported. Six HDMI inputs, ARC-ready MAIN OUT, and SUB OUT pass 4K/60p and HDR video from player to compatible TV and projector and all terminals are HDCP 2.2 compliant.

AC Inlet Type Thick Cable

A thick AC inlet type power cable is included to provide superior sound.

Anti-Standing Wave Insulators

Features a special form with no parallel sides inside to prevent cavity resonance. This makes the sound localisation, tone, and scale clearer, while also contributing to seamless connection between the channels and improved response to quick sound.

Amplifier DesignClass D3 (Direct Energy HD)
Multi-ch Simultaneous Drive (8ohms, 1 kHz, THD 1 %)760 W
4 OHM SpeakerYes
8 ohms, 1 kHz, THD 0.08 %, 2ch Driven FTC135W+135W
Estimated Power Consumption/Network Standby off310W / 0.2W
AirPlayApple AirPlay 2
Internet RadioTuneIn Radio
Chromecast built-in and Works with the Google AssistantYes
FlareConnect™ for Multi-room AudioYes
Roon TestedYes
Streaming Audio From PC/NetworkYes
iOS/Android Remote Control APPPioneer Control App
Works with AlexaYes (Firmware update)
DTS Play-Fi with Pioneer Music Control AppYes
Amazon Music, Pandora ® , Spotify, TIDAL, and Deezer Hi-Fi Music-Yes
Digital Core DSP EngineDigital Quad-Core 32-bit DSP (Cirrus Logic) + Aureus™ floating- point DSP (TI)
Audio Processing11.2
IMAX EnhancedYes
Dolby Atmos Height VirtualizerYes
Dolby Digital PlusYes
DTS-HD Master AudioYes
HDMI SACD TransferMulti-Channel
Audio DACs384 kHz/32-bit D/A Conversion with ES9026PRO x 2
Music File Playback192 kHz/24-bit ALAC, AIFF, FLAC, WAV (RIFF) and 11.2 MHz DSD
Dolby AtmosYes
Dolby TrueHDYes
DTS Neural:XYes
MCACCYes (Pro)
Full Band Phase ControlYes
Phase ControlYes
EQ Bands9-Band
Distance Adjustment0.05 feet
Auto Subwoofer CrossoverYes
MCACC Memory3
Auto Phase Control PlusYes
Standing Wave ControlMulti-point (9 points)
Polarity CheckYes
Auto SurroundYes
Advanced Surround10+1
Stream DirectYes (Direct, Pure Direct)
Front Stage Surround AdvanceYes
Audio Feature
Dialog EnhancementYes
DSD Music FileYes
Sound Delay (Lip Sync)Yes
Advanced Sound RetrieverYes (2ch)
Tone ControlMulti
Speaker A/BYes
4K Ultra HD Pass-ThroughUltra HD Pass-through with HDCP 2.3 (4K/60p/4:4:4/24-bit, 4K/24p/4:4:4/36-bit, 4K/60p/4:2:0/36-bit)
3-D ReadyYes
HDMI Standby ThroughYes with Input Switch / Last Memory
Dolby Vision CompatibleYes
HDMI x.v. ColorYes
Super ResolutionYes
4K Ultra HD Video ScalerYes (1080p to 4K)
Audio Return ChannelYes (eARC)
HDRHDR10, HLG and BT.2020 Wide Color Gamut Signal Pass-through
HDMI 36-bit Deep ColorYes
Video Converter to HDMIYes
HDMI Input / Output7 In (6 Rear, 1 Front) / 3 Out
Bluetooth Built-InBluetooth® Wireless Technology (Version: 4.2, Profile: A2DP 1.2/AVRCP 1.3, Codec: SBC/AAC) Built-in
Composite A/V Input / Output2 in
Ethernet InputYes
Digital Audio Inputs / Output5 in (Optical 3, Coaxial 2) / 0 out
Headphone OutputYes
Phono InputYes
Wi-Fi Built-InDual Band (5 GHz/2.4 GHz) 802.11ac Compliant Wi-Fi® Built-in
Component Video Input / Output2 in
USB TerminalFront and Rear
Analog Audio Inputs / Output6 in / 0 out
Pre-Amp Output11.2 ch
Front A/V InputsUSB & HDMI
AM/FM PresetsAM/FM Tuner 40 Presets
On-Screen DisplayUser-Friendly GUI with System Setup Menu
Powered Zone outputZONE2 / ZONE3
Zone 2 SourcesAll Audio Sources
12 Volt Trigger (Assignable)A.B
IR Serial Remote In/Out2 in / 1 out
Function RenameYes
Personal PresetYes
Versatile Speaker ConfigurationYes
Auto Power DownYes
Multi-Room and Source OutputZONE2 / ZONE3 Pre/Line Out
Zone 3 SourcesAnalog/Net/Bluetooth/Tuner
FL DimmerYes
Sleep TimerYes
Alumium Front PanelYes
Transformer StabilizerYes
3D Space Frame ConstructionYes
Speaker Terminals11 Large
Advanced Direct ConstructionYes
Warranty3 Years
W x H x D (inches)17-1/8 x 7-5/16 x 17-5/16 inches (435 x 185 x 440 mm)
Weight40.8 lbs. (18.5 kg)