Pioneer Onkyo Europe GmbH

Pioneer introduces two ‘reference’ av receivers, the SC-LX904 and SC-LX704, plus the PD-50AE sacd player, equipped with ‘trickledown’ flagship technologies

05Sep / 2019

Pioneer introduces two ‘reference’ av receivers, the SC-LX904 and SC-LX704, plus the PD-50AE sacd player, equipped with ‘trickledown’ flagship technologies


Onkyo & Pioneer Corporation today announce details of its new network AV receivers, the SC-LX904 and SC-LX704, aimed at customers looking for top class home theatre, plus a new SACD Player & D/A Converter, the PD-50AE… an amazing disc player with MQA compatibility.

SC-LX904 and SC-LX704
The SC-LX904 and SC-LX704 have the latest version of Pioneer’s “Direct Energy HD Amplifier”, a unique implementation of Class D Amplifier technology that delivers prodigiously powerful multi-channel amplification of 215W x 11 ch (LX904)* and 205W x 9 ch (LX704)*. The Direct Energy HD Amplifier, which drives all channels equally, is the ultimate embodiment of Pioneer's "Multi-Channel Stereophonic Philosophy", one that is applied from the beginning to end of the audio signal processing. The SC-LX904 and SC-LX704 employ two ESS9026 384 kHz/32-bit high quality DACs, to equalise all channel signal processing from the outset. These class-leading AV receivers will offer consumers a new level of sight, sound and scale thanks to their integration of IMAX Enhanced technology, a sure-fire way to deliver a premier immersive at-home entertainment experience. Thanks to their Direct Energy HD Amplifier technology, the SC-LX904 and SC-LX704 make the very most of the latest surround formats such as Dolby Atmos® and DTS:X®*measured @ 6 ohms, 1 kHz, THD 1 %, 1ch driven

Both models also incorporate a host of state-of-the-art Pioneer audio technologies designed to ensure easy set-up and reference-grade sound. During initial set-up, the company’s famed “MCACC (Multi-Channel Acoustic Calibration System) PRO” helps tune the receivers’ output for your room (via the supplied custom microphone), the system automatically compensating for differences in speaker size, level and distance. What’s more, “Full-band Phase Control” in MCACC PRO achieves even more precise sonic tailoring by adjusting the group delay occurring at each speaker. Since MCACC PRO correction is effective for speakers installed high-up, it creates a seamless surround sound field, from floor to ceiling.

The LX904 and LX704 feature 7 HDMI Inputs / 3 Outputs and support Ultra HD pass-through with HDCP 2.3, 4K / 60 Hz, Dolby Vision™, HDR10, HLG (Hybrid Log-Gamma), WCG (Wide Color Gamut) and Ultra HD upscaling (1080p to 4K).When connected via HDMI to one of Pioneer’s latest Universal Disc Players (UDP-LX800 and UDP-LX500), the SC-LX904 and SC-LX704 minimise the adverse effects of jitter in HDMI transmission and enable accurate D/A conversion. We call this state-of-the-art Pioneer audio technology PQLS (Precision Quartz Lock System). The end result of PQLS is a significantly improved signal-to-noise ratio and a greater sense of realism, as well as a rich, three-dimensional sound field.

The LX904 and LX704 are equipped with two new features to achieve even higher sound quality. In "Audio Exclusive Mode", the HDMI video signal is turned off in order to improve sound quality. "AV Direct Mode", meanwhile, turns off the all network functionality which benefits both audio and video playback quality.

Additional features include:

  • Dialog Enhancement: makes it easy to adjust and listen to movie dialogue and vocals in music.
  • Personal Preset: let’s you save and recall up to three combinations of input selector, favorite volume and surround settings.
  • Reflex Optimizer: enhances object-based audio reproduction from upward firing Dolby Atmos ‘enabled’ speakers.
  • Works with Alexa*: lets you use your voice to control the AV receiver by speaking commands through an Alexa Built-in device. One can ask Alexa to play, pause, and skip music or control the volume. Users can enjoy music via streaming services such as Amazon Music, and make selections by song title, artist name, release year, or genre. It is also planned to support Works with Alexa Multi Room Music (MRM) mode which enables multiple devices to be play music in sync. *Works with Alexa will be available with future firmware update.
  • Works with Google Assistant so you can turn up the volume, skip tracks, or stop the music on the receivers when using an Assistant-enabled Smart Speaker or Smart Displays, like Google Home.
  • Wireless connectivity includes Chromecast built-in, Apple AirPlay 2, Bluetooth®, DTS Play-Fi®, Wi-Fi® as well as FlareConnect™, Pioneer’s wireless protocol that mirrors any audio source connected to the receiver on compatible speakers located in other rooms.
  • Enjoy a limitless flow of music, sports, talk, and news entertainment from internet radio stations and online music services, including Amazon Music, Pandora®, Spotify, TIDAL, and Deezer.
  • High-resolution sound sources (192 kHz / 24-bit) in FLAC, WAV, AIFF and ALAC file formats, and DSD (2.8/5.6MHz/11.2MHz) files are also supported.
  • Custom integration features include IR in, 12 V Trigger out, RS-232c and a detachable power cable.

The PD-50AE benefits from decades of Pioneer know-how and expertise with optical disc playback, experience that manifests itself in the form of original technologies used to improve disc reading accuracy and silence mechanical drive noise, as well the incorporation of ‘trickle-down’ audio technologies from the flagship PD-70AE SACD player. Featuring an ESS DAC and fully discrete analogue/digital power supply stage, the PD-50AE brings out the very best from your favorite SACD, CD and MQA-CD albums. What’s more, when used as D/A Converter, the PD-50AE plays MQA files via USB, so you can enjoy high-fidelity disc playback and superlative streamed audio from just one machine.

Main Features:

  • Incredibly Accurate Disc Reading from the Quiet Vibration Control Drive Mechanism
    By applying the control technology know-how gained by Pioneer in manufacturing optical pickups over many years, the PD-50AE achieves a high level of disc reading accuracy. The shielded mechanism with a honeycomb-stamped metal cover is inherited from the PD-70AE reference model. In addition, we have developed a new floating mount arrangement exclusively for the PD-50AE’s mechanism.
  • Discrete Analogue/Digital Power Supply Circuitry
    The digital and analogue circuits each have a discrete power supply. The PD-50AE is designed with the shortest and the most optimal power supply stage, as well as audio signal path, in order to provide rich and pure sound quality.
  • Works as a Premium D/A Converter with MQA file playback
    In addition to being a SACD/CD/MQA-CD player, the PD-50AE also functions as a D/A converter capable of delivering true high-fidelity sound. The carefully designed circuits bring out the full potential of the high-performance ESS ES9026PRO DAC (used in a 4-ch parallel drive mode), letting you enjoy superb sound, full of rich detail from both streaming and music files, including MQA delivered from TIDAL.
  • Custom Electrolytic Capacitors for High-Quality Audio
    A custom-made electrolytic capacitor for high-grade audio has been selected after exhaustive listening trials while listening to SACD and CD sound. The capacitor brings out the very best from audio discs, letting you enjoy every nuance of a performance.
  • Upsampling
    The PD-50AE has a newly adopted upsampling technology which adds Hi-Res refinement to ‘standard’ digital audio sources. Upsampling to 384 kHz, it scales up digital audio to achieve a more natural and dynamic sound.
  • Lock Range Adjust Function
    This function allows you to make fine adjustments in the DAC’s lock range, in order to reduce jitter in the input signal. Adjustments can be made in six steps, with the default set at Range 6. Ranges 1 to 3 are intended for further fine-tuning by expert users.
  • Digital Filter
    The DAC’s digital filter lets you pick from three flavours of sonic character – ‘Slow’ for soft and warm, ‘Sharp’ for solid and tight, and ‘Short’ for quick and forward.
  • Anti-Standing Wave Insulator Feet
    The Anti-Standing Wave Insulator Feet have been developed through repeated listening tests, and feature a special design with no parallel interior sides, in order to prevent cavity resonance. This makes the localizing sound, tone, and scale clearer, while also enhancing transient response.


PIONEER, ELITE, MCACC, Phase Control and the logos are registered trademarks of Pioneer Corporation, and are used under license.
The terms HDMI and HDMI High-Definition Multimedia Interface, and the HDMI Logo are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other countries.
Dolby, Dolby Atmos, and the double-D symbol are registered trademarks of Dolby Laboratories.
Manufactured under license from IMAX Corporation. IMAX® is a registered trademark of IMAX Corporation in the United States and/or other countries. All Rights Reserved. For DTS patents, see Manufactured under license from DTS, Inc. DTS, the Symbol, DTS in combination with the Symbol, DTS:X, and the DTS:X logo, Play-Fi, and the Play-Fi logo are registered trademarks or trademarks of DTS, Inc. in the United States and/or other countries. © DTS, Inc. All Rights Reserved.
Apple and AirPlay are trademarks of Apple Inc., registered in the U.S. and other countries.
Wi-Fi® is a registered trademark of the Wi-Fi Alliance. The Wi-Fi CERTIFIED Logo is a certification mark of the Wi-Fi Alliance.
The Bluetooth word mark and logos are registered trademarks owned by Bluetooth SIG, Inc.
Pandora, the Pandora logo, and the Pandora trade dress are trademarks or registered trademarks of Pandora Media, Inc. used with permission.
Spotify and the Spotify logo are trademarks of the Spotify Group, registered in the U.S. and other countries.
Google, Google Home, Google Nest and Chromecast built-in are trademarks of Google LLC. "Super Audio CD" is a registered trademark.DSD is a trademark of Sony Corporation. The MQA logo is a registered trade mark of MQA Limited.