Onkyo TX-NR525 Review and Specs

Onkyo TX-NR525 (Asian version)

SCORE:
28

Highlights

  • 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven)
  • 4K Passthrough
  • DLNA
  • Ethernet, Wi-Fi, Bluetooth
  • USB input

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Onkyo TX-NR525 Overview

Onkyo TX-NR525 was introduced in 2013. It is equipped with 5 channel amplifier and is capable of 5.1 maximum channel processing.

We evaluated the Receiver and gave 28 overall score out of 100. Our ranking system is based on the amplifier specifications, audio and video features, connectivity, multizone capabilities, radio and many other details.

AMPLIFIER
35
VIDEO FEATURES
12
AUDIO FEATURES
25
CONNECTIVITY
33
MULTIZONE
24
MISCELLANEOUS
22
RADIO
64
OVERALL
28

Amplifier score is based on power ratings, minimum impedance load, power supply, transformer type, total harmonic distortion, damping factor, signal to noise ratio and other small details. Audio score depends on the number of channels, front wide channel support, maximum channel processing, support of audio formats, DAC specifications, room calibration algorithm... Video score is based on HDR, Dolby Vision and video signal passthrough and upscaling, analog to HDMI upconversion. Connectivity score is defined from all wired and wireless inputs and outputs, internet and bluetooth connections, HEOS, SONOS and others. Multizone score depends on the number of zones with their outputs. Radio score is evaluated form digital radio support and analog tuner with its frequency range, signal to noise ratio, harmonic distortion...

Pros and Cons

In this section we present pros and cons of Onkyo TX-NR525.

PROS
DSD via HDMI 👍
DSD via USB 👍
Audyssey Dynamic EQ 👍
Audyssey Dynamic Volume 👍
4K or 8K Video Passthrough 👍
DLNA 1.5 👍
Ethernet 👍
Wi-Fi 👍
Bluetooth 👍
New HDCP Version 👍
USB Input 👍
Many Analog Audio Line Inputs 👍
Composite Video Inputs 👍
Component Video Inputs 👍
Zones 👍
Analog Tuner 👍
Internet Radio 👍
Pandora 👍
Spotify 👍
CONS
Few Channel Processing 👎
No Dolby Atmos 👎
No Dolby Atmos Height Virtualization 👎
No DTS:X 👎
No DTS Neural:X 👎
No DTS Virtual:X 👎
No IMAX Enhanced 👎
No Auro 3D with Auro-Matic Upmixer 👎
No DTS Dialog Control 👎
No Audyssey LFC 👎
No Audyssey Sub EQ HT 👎
No HDR10 👎
No HDR10+ 👎
No Dynamic HDR 👎
No Dolby Vision 👎
No Auto Low Latency Mode Pass-through 👎
No VRR 👎
No QFT 👎
No 4K or 8K Video Upscaling 👎
No MHL Input 👎
No FireConnect 👎
No FlareConnect 👎
No Chromecast Built-In 👎
No DTS Play-Fi 👎
Does not Work with Amazon Alexa 👎
Does Not Work with SONOS 👎
No eARC 👎
Few HDMI Outputs 👎
No Phono Input 👎
No Multi-Channel Input 👎
No Analog Pre-Outs 👎
No Tidal 👎
No Deezer 👎
No Napster 👎
No SiriusXM Internet Radio 👎
No Toroidal Transformer 👎

Major Changes from its predecessor

Here we are comparing Onkyo TX-NR525 to its predecessor TX-NR515 and displaying the major changes.

UPGRADES Onkyo TX-NR525 Onkyo TX-NR515
DSD via USB 2-ch Input
Phase-Matching Bass Boost
More Advanced Auto Speaker Calibration System Audyssey MultEQ Audyssey 2EQ
Video Signal Passthrough up to 4K/30p up to 1080p
Bluetooth via Front USB (optional UBT-1 adapter sold separately)
More Analog Audio Line Inputs 6 (1 front) 5
More Component Video Inputs 2 1
Analog Tuner FM/AM with RDS FM/AM

DOWNGRADES Onkyo TX-NR525 Onkyo TX-NR515
Less Channels 5.2 7.2
Bi-amp capability
Less Channel Processing 5.1 7.1
Video Signal Upscaling up to 4K/30p (Marvell Qdeo)
Analog To HDMI Upconversion Component**, Composite
MHL Input Front HDMI
Less HDMI Inputs 6 8 (1 front)
Less HDMI Outputs 1 2 (simultaneous)
Less Optical Inputs 1 2
SiriusXM Internet Radio

For more detailed comparison between the models please visit Onkyo TX-NR525 vs Onkyo TX-NR515.

Selected Features

Amplifier

Onkyo TX-NR525 has 5 channel amplifier and delivers 80 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven).


Video Features

The Receiver has 4K passthrough up to 30p.


WRAT

Onkyo TX-NR525 features Onkyo’s Wide Range Amp Technology (WRAT) circuit layout that prevents phase shifting by pushing the roll-off point higher than the listening-level frequency. Amplifying sound without phase shift creates an uncommonly well-focused and realistic audio image. If phase shift occurs and signal timing is not accurate, then neither is the resulting audio image.


Advanced Music Optimizer

Compressed music enhancement in Onkyo TX-NR525 is done by Onkyo’s Advanced Music Optimizer. While MP3 or AAC files may sound fine through the headphones of your portable digital player, the limitations of these files can be exposed when played back through a quality home entertainment system. This is because a significant amount of high-frequency bit information is lost during the file-compression process. To counter this, Onkyo has designed the Advanced Music Optimizer to compensate for lost bit information and improve the quality of compressed audio signals. This results in a clearer and more expansive sound. Also included in this technology is a loudness correction feature that further improves the audio character of compressed files.


Audyssey

Onkyo TX-NR525 comes with Audyssey Dynamic EQ and Audyssey Dynamic Volume.

Audyssey Dynamic EQ selects the best possible frequency response and surround volume levels moment-by-moment. This ensures that the bass response, tonal balance and surround impression remain constant despite changes in volume. This is the first technology that carefully combines information from incoming source levels with actual output sound levels in the room, a pre-requisite for delivering a dynamic volume solution.

Your Listening experience can be greatly diminished when there are significant shifts in volume between television programs, commercials and within the program material itself. When this happens you must constantly adjust the volume to maintain your desired listening level. Audyssey Dynamic Volume monitors the volume of program material moment-by-moment and automatically adjusts it, maintaining the desired listening level for all content while optimizing the dynamic range to preserve impact.


Phase-Matching Bass Boost

Onkyo TX-NR525 features Phase-Matching Bass Boost. The negative effects of phase-shift or the timing difference between sound waves of different frequencies can sometimes be heard in audio players when corners are cut in order to increase bass response. While most audio systems have some form of low-frequency enhancement system, often a bigger bass sound comes at the expense of mid-range clarity, and results in a smeared or muddy sound. Onkyo’s Phase-Matching Bass Boost technology avoids this problem by improving the phase timing to preserve the natural clarity of the mid-range allowing vocals and strings to shine while maintaining a smooth, powerful bass response at all volume levels.


Room Correction

Onkyo TX-NR525 comes with Audyssey MultEQ room correction system and includes the calibration microphone.

Audyssey is an acoustic measurement technology which automatically restores the acoustic distortion caused by the acoustic behaviour of a room with only a push on a button. Audyssey equalization provides an clear, accurate, natural sound with voices and dialog that become focused and intelligible, restoring the musical balance. Musical instruments and sound effects become precisely localized and the surround soundstage is made seamless and enveloping.


Connectivity

Onkyo TX-NR525 can be connected to internet using ethernet cable or wirelessly via Front USB (optional UWF-1 sold separately). It can also connect to bluetooth devices via Front USB (optional UBT-1 adapter sold separately) . It has 6 HDMI inputs and HDCP 2.2 copy protection.

Front panel has L/R Audio, Composite and USB inputs.

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Detailed Specifications

Here we list all the available features and specifications of Onkyo TX-NR525.

BASICS
BrandOnkyo
ModelTX-NR525
TypeA/V Receiver
CountryAsia
Release Year2013
AMPLIFIER
Channels5.2
WRAT (Wide Range Amplifier Technology)
VLSC (Vector Linear Shaping Circuitry)
Optimum Gain Volume Circuitry
THX™ Certification
Continuous 6 Ω Rated
Certified 4 Ω Performance
Discrete Output Stage Circuitry
3-Stage Inverted Darlington Circuitry
PUSH-PULL Design
Independent Block Construction (Amp/Preprocessor)
Bi-amp Capability
BTL (Bridged Transless or Bridging)
AUDIO
Digital Signal Processing (DSP) EngineAdvanced 32-Bit Processing DSP Chip
DACBurr-Brown
Maximum Channel Processing5.1
Air Studios Monitor Certification
Dolby Atmos
Dolby Atmos Height Virtualization
Dolby TrueHD
Dolby Digital Plus
Dolby Surround Upmixer
Dolby Pro Logic PLII
Dolby Digital EX
Surround EX
DTS:X
DTS Neural:X
DTS Virtual:X
DTS Neo Neo:6
DTS-HD Master Audio
DTS-HD High Resolution Audio
DTS 96/24
DTS Express
DTS-ES
IMAX Enhanced
Auro 3D with Auro-Matic Upmixer
PCM 2-ch/Multi-ch Input
Music Playback via USBFLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, AAC, LPCM, Dolby TruHD
High Resolution Music Playback via USB and/or Network up to 192 kHz
High Resolution Audio Formats via USBFLAC, WAV, WMA Lossless, Apple Lossless, DSD, AAC, LPCM
Multi-Channel Music File Playback via USB
Gapless Playback
DSD via HDMI 2-ch/Multi-ch Input
DSD via USB 2-ch Input
DSD to PCM Converter
USB DAC
Jitter Reduction PLL (Phase Locked Loop) Jitter-Cleaning Circuit Technology for S/PDIF Audio
DTS Dialogue Control
Dialog Enhancement
Dialog Level Adjustment
Dialog Normalization
Dialogue Lift
Tone Control Front L/R Channels
Compressed Music Enhancer Advanced Music Optimizer
High-resolution Music Enhancer
THX Processing Mode
Audyssey Dynamic EQ
Audyssey Dynamic Volume
Audyssey LFC
Audyssey Sub EQ HT
Audyssey DSX
Phase-Matching Bass Boost
Direct Mode
Pure Audio Mode
Pure Direct Analog Path Mode
Virtual Speakers T-D (Theater-Dimensional)
Independent Dual Subwoofer Output
CALIBRATION
Auto Speaker Calibration System with Mic. Audyssey MultEQ
Audyssey App Support
VIDEO
HDR10
HDR10+
Dynamic HDR
BT.2020 color space
Dolby Vision
Hybrid Log Gamma (HLG)
Quick Media Switching (QMS)
Auto Low Latency Mode (ALLM)
Variable Refresh Rate (VRR)
Quick Frame Transport (QFT)
3-D Ready
Video Signal Passthroughup to 4K/30p
Video Signal Upscaling
Analog To HDMI Upconversion
Component Video Upscaling
Analog to Analog Video conversion
isf Certified Calibration Control
CONNECTIVITY
MHL Input
DLNA 1.5
FireConnect
FlareConnect
Chromecast Built-In
DTS Play-Fi
Works with Amazon Alexa
Works with SONOS
AirPlay
Apple Product Connection iPod and iPhone via front USB
Remote App iPod touch/iPhone and Android-Powered Devices
InstaPrevue Input Source Prevue
Ethernet
Ethernet Switch
Wi-Fi via Front USB (optional UWF-1 sold separately)
Bluetooth via Front USB (optional UBT-1 adapter sold separately)
HDBaseT Compatible
Enhanced Audio Return Channel (eARC)
HDCP Version2.2
HDMI Inputs6
HDMI Outputs1
USB Input1 Front (for iPod/iPhone) and 1 Rear
USB DC Out Port
Analog Audio Line Inputs6 (1 front)
Analog Audio Line Outputs
Phono Input
Optical Inputs1
Optical Outputs
Coaxial Inputs/Outputs2 / No
Composite Video Inputs5 (1 front)
Composite Video Outputs1
S-Video Inputs
S-Video Outputs
Component Video Inputs2
Component Video Outputs1
PC In
Multi-Channel Input
Analog Pre-Outs0.2
XLR Inputs
XLR Pre-outs
Front A/V InputsL/R Audio, Composite, USB
Speaker A/B
Headphone Out 6.3 mm
ZONES
Zones2
Powered Zones
Zone 2 OutsRCA Line Out
Whole House Mode
RS-232 Interface
+12V Trigger Output0
Remote (IR) Input/Output0 / 0
MISC
On-Screen Display
Detachable Power Cord
uport
ONKYO-RI System Control
RIHD (Remote Interactive Over HDMI)
Pre-Pro/Learning RemoteNo /
On Screen Remote Programming
Bi-directional Remote Setup via GUI
Activity Based Remote
Smart Grid-Ready
RADIO
Analog Tuner FM/AM with RDS
Presets40
Digital Radio
Internet Radio TuneIn
Pandora
Spotify
Tidal
Deezer
Napster
SiriusXM Internet Radio
CONSTRUCTION
Solid Aluminum Front
Speaker Terminals5
Large Speaker Terminals5
Color-Coded Speaker Terminals
Transparent High-Grade Speaker Terminals
18mm Pitch High Grade Pre-outs
19mm-Pitch Audio Inputs
Gold plated RCA terminals
POWER
Power SupplyAC 220-240 V, 50/60 Hz
Independent Power Supply
H.C.P.S. (High Current Power Supply) Massive High Power Transformer
Toroidal Transformer
Power Consumption420 W
No Sound Power60 W (230 V)/65 W (240 V)
Standby Power0.2 W
GENERAL
ECO Mode / Hybrid Standby Function
Dimensions (W x H x D)435 mm x 173.5 mm x 328 mm
17-1/8" x 6-13/16" x 12-15/16"
Weight9.0 kg (19.8 lbs)
Warranty2 Years
SPECS
Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC)80 W (0.7% THD)
Power Output (6 Ω, 1 kHz, 2 channel driven, FTC)100 W (0.7% THD)
Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC)160 W
Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC)130 W (1% THD)
Dynamic Power per Channel (3 Ω, Front)180 W
Dynamic Power per Channel (4 Ω, Front)160 W
Dynamic Power per Channel (8 Ω, Front)100 W
THD0.7% (20 Hz - 20 kHz, Half power)
Damping Factor60 (Front, 1 kHz, 8 Ω)
Input Sensitivity and Impedance (Line)200 mV/47 kΩ (Line)
Rated Lineout Level and Impedance200 mV/2.2 kΩ
Maximum Lineout Level and Impedance2 V/2.2 kΩ
S/N Ratio (Line, IHF-A)100 dB
Frequency Response (Analog In)5 Hz - 100 kHz/+1 dB, -3 dB (DSP bypass)
DSD Sampling Rates via HDMI2.8 MHz
DSD Sampling Rates via USB2.8 MHz
Video Input Sensitivity/Output Level and Impedance 1 Vp-p/75 Ω (Component Y)
0.7 Vp-p/75 Ω (Component PB/CB, PR/CR)
1 Vp-p/75 Ω (Composite)
Video Frequency Response5 Hz - 100 MHz/+0 dB, -3 dB (Component)
Ethernet Standard100BASE-TX
FM Frequency87.5 MHz - 108.0 MHz
AM Frequency522/530 kHz - 1611/1710 kHz

* - 480i/576i and 480p/576p only
** - 480i/576i only
*** - no 1080p/24 upconversion
**** - 1080p signal is not converted

Successor

In 2014 Onkyo TX-NR525 was replaced by TX-NR535. Let us now have a look at some important changes that the successor brought.


UPGRADES Onkyo TX-NR535 Onkyo TX-NR525
Gapless Playback
Video Signal Passthrough up to 4K/60p (YCbCr 4:2:0) up to 4K/30p
AirPlay AirPlay via optional Onkyo RI Dock DS-A5 (sold separately)
Wi-Fi via Front USB (optional UWF-1 sold separately)
Bluetooth via Front USB (optional UBT-1 adapter sold separately)
More Analog Audio Line Inputs 7 (1 front) 6 (1 front)
More Analog Audio Line Outputs 1
Independent Power Supply 2

DOWNGRADES Onkyo TX-NR535 Onkyo TX-NR525
High Resolution Music Playback via USB up to 96 kHz up to 192 kHz
Audyssey Dynamic EQ
Audyssey Dynamic Volume
Phase-Matching Bass Boost
USB Input 1 (Front) 1 Front (for iPod/iPhone) and 1 Rear
Less Composite Video Inputs 4 (1 front) 5 (1 front)
Less Component Video Inputs 1 2
Smaller Power Supply 330 W 420 W

For more detailed comparison between the models please visit Onkyo TX-NR535 vs Onkyo TX-NR525.

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