Onkyo TX-SR383 vs Pioneer VSX-LX503 review

Votes 1 1
Rating 5 5

AV receivers comparison chart

Onkyo TX-SR383 vs Pioneer VSX-LX503 review

Onkyo TX-SR383
vs
Pioneer VSX-LX503

The Onkyo TX-SR383 vs Pioneer VSX-LX503 comparison proves that these receivers have many common features.

Amplifier

A significant difference between the receivers in the number of channels, Onkyo TX-SR383 has 7.2 versus 9.2 for Pioneer VSX-LX503. Regarding power, then TX-SR383 has such a W/Ohm ratio - 100/8, 135/6 when VSX-LX503 has a power of 120/8, 230/6. The THD is 0.09% for the TX-SR383 but 0.08% for the VSX-LX503.

Audio features

Characteristics of digital to analog converter (DAC) are different, 192 KHz/24-bit for TX-SR383 and AK4458 384 KHz/32-bit for the VSX-LX503. Only the VSX-LX503 supports Bi-amping feature. The Pioneer VSX-LX503 can transmit an audio signal directly to the amplifier and bypasses any DSP processing. Rivals from our review have Bluetooth support. Only the VSX-LX503 supports Spotify. Compared AV receivers retain the quality of 4K/60Hz signal when transmitting from a source to a TV or projector. HDMI signal transmission in standby mode is implemented in each of the devices. The VSX-LX503 can scale the input HDMI signal, unlike the TX-SR383. Dolby Vision technology found support only on the VSX-LX503.

Extensive connections

The Onkyo TX-SR383 has 4/1 HDMI inputs/outputs versus 7/2 HDMI connectors of the Pioneer VSX-LX503.Onkyo TX-SR383 connectionsPioneer VSX-LX503 connections The HDMI Audio Return Channel (ARC) feature supports both devices. Unfortunately, HDMI eARC is not available on monitored devices. The Consumer Electronics Control (CEC) feature is present in most modern AV receivers and the models in our comparison are no exception. Both models support the standard HDCP 2.2. The VSX-LX503 has a built-in phono stage for connecting a vinyl player.

Additional features

The TX-SR383 supports 2 Multi-room zones, versus 3 for the VSX-LX503. An ECO mode is not present in each of the AV receivers. The setup assistant will help you configure Pioneer VSX-LX503.

Multichannel surround

Only the VSX-LX503 has a Dolby Atmos multichannel audio format support. A surround technology DTS:X is supported only by the VSX-LX503.

Add receiver to comparison
We didn't find anything to show here

General

Item

Onkyo TX-SR383
Pioneer VSX-LX503

Model

TX-SR383
VSX-LX503

Brand

Onkyo
Pioneer

Reviews

188
166

Amplifier

Channels

7.2
9.2

Stereo power (RMS), W/Ohm

100/8, 135/6
120/8, 230/6

Output impedance, Ohm

8, 6
8, 6

Frequency response

5Hz-100KHz
10Hz-100KHz

THD in stereo, %

0.09
0.08

Audio features

Digital to analog converter (DAC)

192 KHz/24-bit
AK4458 384 KHz/32-bit

Bi-amping

Pure direct (straight)

Auto speaker calibration

Audyssey MultEQ
MCACC

Speaker A/B switching

Other audio features

Advanced Music Optimizer
Advanced Sound Retriever, Hi-Res audio, Reflex Optimizer

Connectivity

Wi-Fi

2.4/5GHz

USB

1 (USB 2.0)
2 (USB 2.0)

Bluetooth

Ethernet (RJ45)

1
1

DLNA

MHL

Streaming services

Apple Music (AirPlay)

AirPlay

Amazon Music

Spotify

Other streaming services

has not
Deezer, TIDAL, Pandora, TuneIn Radio

Extensive connection

HDMI input/output

4/1
7/2

HDMI ARC (Audio Return Channel)

HDMI eARC (Enhanced Audio Return Channel)

HDMI CEC

Digital content protection (HDCP)

HDCP 2.2
HDCP 2.2

Subwoofer output (LFE)

2
2

Headphone output

1 x 6.3
1 x 6.3

Optical digital input

1
2

Coaxial digital input

1
1

Composite input

2
2

Component input/output

0/0
1/0

Phono (MM) input

Front panel connectors

USB, phones, setup mic
USB, HDMI, phones, setup mic

Multi channel preamp output

Video features

HDR (High Dynamic Range)

HDR10

4K signal pass-through

4K/60Hz
4K/60Hz

8K signal pass-through

HDMI signal pass-through

3D signal pass-through

HDMI pass-through in standby mode

Video conversion

analog to HDMI

Analog to HDMI scaling

HDMI to HDMI scaling

Dolby Vision

Other video features

DeepColor, x.v.Color, BT.2020, HLG
DeepColor, x.v.Color, HLG, BT.2020

Additional features

Voice control

Google Assistant

App control

iPhone, iPod, Android
iPhone, iPad, iPod, Android

Display

fluorescent
colour OSD

Tuner

AM, FM
AM, FM

Sleep timer

Auto power off

ECO mode

Graphical user interface (GUI)

Setup assistant

Firmware update

USB
network, USB

Other additional features

has not
IP Control

Multi-room

Multi-room zones

2
3

Zone audio output

speaker
speaker, preout

Zone HDMI output

Multi-room control

has not
FlareConnect

RS-232

0
1

Remote control input/output (IR)

0/0
1/1

DC trigger output (12V)

0
2

Multichannel surround

Dolby Atmos

Dolby TrueHD

Dolby Surround

Dolby (other)

Dolby Pro Logic
Dolby Digital Plus

DTS:X

DTS HD Master

DTS Virtual:X

DTS Neural:X

DTS (other)

has not
DTS-ES, DTS 96/24, DTS-HD, DTS-EXPRESS

Auro-3D

IMAX Enhanced

Multichannel stereo

Audio file formats

MP3

WMA

AAC

WAV

FLAC

ALAC

Other audio file formats

has not
AIFF

Power

Operational power consumption, W

270
850

Standby consumption, W

0.3
0.15

Removable power cord

User manual

Manual

Dimensions

Size W x H x D, cm/inches

43.5 x 16.8 x 32.6/17 x 6.3 x 12.6
43.5 x 18.5 x 38.6/17 x 7 x 14.9

Weight, kg/lbs

8.2/17.6
13/28.7

Other

Release year

2018
2018
Onkyo TX-SR383
Pioneer VSX-LX503
Onkyo TX-SR383
Pioneer VSX-LX503

AV receivers SoundInspiration comparison rating

  • better
  • worse
  • 4.8
  • 8.6
  • 4.8Onkyo TX-SR383
  • 8.6Pioneer VSX-LX503