| GENERAL | Onkyo TX-NR737 | Yamaha RX-A4A |
|---|---|---|
| Brand | Onkyo | Yamaha |
| Series | Aventage | |
| Model | TX-NR737 | RX-A4A |
| Type | A/V Receiver | A/V Receiver |
| Country | USA | USA |
| Release Year | 2014 | 2021 |
| Predecessor | Onkyo TX-NR727 | Yamaha RX-A1070 |
| Successor | Onkyo TX-NR747 |
| AMPLIFIER | Onkyo TX-NR737 | Yamaha RX-A4A |
|---|---|---|
| Channels | 7.2 | 7.2 |
| Power Output | 110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) | 110 W (8 Ω, 20 Hz - 20 kHz, 2 channel driven) |
| Front Wide Channel Support | ||
| WRAT (Wide Range Amplifier Technology) | ||
| VLSC (Vector Linear Shaping Circuitry) | ||
| Optimum Gain Volume Circuitry | ||
| THX™ Certification | Select™2 Plus | |
| Continuous 6 Ω Rated | ||
| Certified 4 Ω Performance | ||
| Discrete Output Stage Circuitry | ||
| 3-Stage Inverted Darlington Circuitry | All Channels | |
| PUSH-PULL Design | ||
| Independent Block Construction (Amp/Preprocessor) | ||
| Bi-amp Capability | ||
| BTL (Bridged Transless or Bridging) |
| AUDIO FEATURES | Onkyo TX-NR737 | Yamaha RX-A4A |
|---|---|---|
| Digital Signal Processing (DSP) Engine | Dual 32-bit DSP for Powerful Advanced Processing | |
| Surround:AI™ | ||
| DAC | Burr-Brown | ESS Hyperstream DAC ES9007S |
| DAC Specs | 192 kHz/24 Bit | 384 kHz/32 Bit |
| Maximum Channel Processing | 7.1 | 7.1 |
| Air Studios Monitor Certification | ||
| Dolby Atmos | ||
| Dolby Atmos Height Virtualization | ||
| Dolby Atmos Music | ||
| Dolby TrueHD | ||
| Dolby Digital Plus | ||
| Dolby Surround Upmixer | ||
| Dolby Pro Logic | ||
| Dolby Digital EX | ||
| Surround EX | also known as Dolby Digital 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 | Discrete 6.1, Matrix 6.1 | Discrete 6.1, Matrix 6.1 |
| IMAX Enhanced | ||
| Auro 3D with Auro-Matic Upmixer | ||
| PCM | 2-ch/Multi-ch Input | 2-ch/Multi-ch Input |
| Network Audio Formats | MP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, AIFF, DSD | |
| Music Playback via USB | FLAC, WAV, Apple Lossless, WMA, WMA Lossless, Ogg, MP3, DSD, AAC, LPCM, Dolby TruHD | MP3, WMA, MPEG-4 AAC, Apple Lossless, WAV, FLAC, AIFF, DSD |
| High Resolution Music Playback via USB and/or Network | up to 96 kHz | up to 384 kHz/32 Bit |
| High Resolution Audio Formats via USB | FLAC, WAV, WMA Lossless, Apple Lossless, DSD, AAC | Apple Lossless, WAV, FLAC, AIFF, DSD |
| Gapless Playback | ||
| DSD via HDMI | 2-ch/Multi-ch Input | 2-ch/Multi-ch Input |
| DSD via USB | 2-ch Input | 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 (bluetooth included) | |
| High-resolution Music Enhancer | ||
| Adaptive DRC (Dynamic Range Control) | ||
| Initial Volume & Maximum Volume Setting | ||
| THX Processing Mode | ||
| Audyssey Dynamic EQ | ||
| Audyssey Dynamic Volume | ||
| Audyssey LFC | ||
| Audyssey Sub EQ HT | ||
| Audyssey DSX | ||
| Phase-Matching Bass Boost | for Deep Bass and Clear Mid-Range | |
| Direct Mode | ||
| Pure Audio Mode | ||
| Pure Direct Analog Path Mode | ||
| Straight Decoding Mode | ||
| Pure Direct Mode | ||
| CINEMA DSP | HD3 | |
| DSP Programs | 24 | |
| SILENT CINEMA / Virtual CINEMA DSP | ||
| Virtual Speakers | T-D (Theater-Dimensional) | including surround back |
| Independent Subwoofer Outputs |
| CALIBRATION | Onkyo TX-NR737 | Yamaha RX-A4A |
|---|---|---|
| Auto Speaker Calibration System with Mic. | AccuEQ | YPAO sound optimization with R.S.C., Multipoint, 3D, 64-Bit High Precision EQ Calculation, Low Frequency mode and Angle measurement |
| YPAO Volume | ||
| PEQ for SUB | Down to 15.6 Hz |
| VIDEO FEATURES | Onkyo TX-NR737 | Yamaha RX-A4A |
|---|---|---|
| HDR10 | ||
| HDR10+ | ||
| Dynamic HDR | ||
| BT.2020 color space | ||
| Dolby Vision | ||
| HLG (Hybrid Log Gamma) | ||
| HDMI Version | 2.1 | |
| HDBaseT Compatible | ||
| Enhanced Audio Return Channel (eARC) | ||
| HDCP Version | 2.2 | 2.3 |
| QMS (Quick Media Switching) | ||
| ALLM (Auto Low Latency Mode) | ||
| VRR (Variable Refresh Rate) | ||
| QFT (Quick Frame transport) | ||
| 3-D Ready | ||
| Video Signal Passthrough | up to 4K/60p (YCbCr 4:2:0) | up to 8K 50/60Hz and 4K 100/120Hz 4:4:4 |
| Video Signal Upscaling | up to 4K/30p (Marvell Qdeo) | up to 4K 60p 4:4:4 |
| Analog To HDMI Upconversion | Component**, Composite | |
| Component Video Upscaling | ||
| Analog to Analog Video conversion | ||
| Component Video Maximum Resolution | 1080i | |
| isf Certified Calibration Control |
| CONNECTIVITY | Onkyo TX-NR737 | Yamaha RX-A4A |
|---|---|---|
| Wi-Fi | ||
| Bluetooth | SBC, AAC | |
| Works with Amazon Alexa | ||
| Google Assistant | ||
| Chromecast Built-In | ||
| Apple Siri | ||
| Works with SonoS | ||
| DTS Play-Fi | ||
| MHL Input | Front HDMI | |
| DLNA 1.5 | ||
| MusicCast | ||
| AirPlay | AirPlay via optional Onkyo RI Dock DS-A5 (sold separately) | AirPlay 2 |
| Apple Product Connection | iPod and iPhone via optional Onkyo RI Dock DS-A5 (sold separately) | iPod, iPhone and iPad |
| Remote App | Onkyo Remote App for iPod touch/iPhone and Android-Powered Devices | (iPhone® / iPad® / Android™ phone / tablet) |
| InstaPrevue Input Source Prevue |
| TERMINALS | Onkyo TX-NR737 | Yamaha RX-A4A |
|---|---|---|
| HDMI Inputs | 7 (1 front) | 7 |
| HDMI Outputs | 2 (simultaneous) | 3 (2 for MAIN, 1 for ZONE2) |
| 8K Inputs | 7 | |
| USB Input | 1 (Front) | USB memory, Portable Audio Player |
| USB DC Out Port | ||
| Optical Inputs | 1 | 2 |
| Optical Outputs | ||
| Coaxial Inputs | 2 | 1 |
| RCA Line Inputs | 6 | 3 |
| RCA Line Outputs | ||
| XLR Line Inputs | ||
| Phono Input | ||
| Multi-Channel Input | ||
| RCA Pre-Outs | 0.2 | 7.2 |
| XLR Pre-outs | ||
| Composite Video Inputs | 3 | |
| Composite Video Outputs | 1 | |
| S-Video Inputs | ||
| S-Video Outputs | ||
| Component Video Inputs | 1 | |
| Component Video Outputs | 1 | |
| Ethernet | ||
| Ethernet Switch | ||
| PC In | ||
| Front A/V Inputs | HDMI/MHL, USB | USB |
| Speaker A/B | ||
| Headphone Out | 6.3 mm (1/4") | 6.3 mm (1/4") |
| Detachable Power Cord | ||
| uport | ||
| dockport |
| ZONES | Onkyo TX-NR737 | Yamaha RX-A4A |
|---|---|---|
| Number of Zones | 3 | 2 |
| Powered Zones | 2 | Zone 2 |
| Zone 2 Outs | RCA Line Out | RCA Preout |
| Zone 3 Outs | RCA Line Out | |
| Zone B Video Output | ||
| Zone GUI | ||
| Whole House Mode | ||
| RS-232C Interface | ||
| +12V Trigger Output | 0 | 2 |
| Remote (IR) Input/Output | 0 / 0 | 1 / 1 |
| Party Mode |
| MISCELLANEOUS | Onkyo TX-NR737 | Yamaha RX-A4A |
|---|---|---|
| On-Screen Display | Advanced "Home" GUI | Graphical User Interface |
| SCENE | SCENE (8 sets) | |
| Web Control | ||
| PreAmp Mode | ||
| Display | High-resolution LCD display | |
| ONKYO-RI System Control | ||
| RIHD (Remote Interactive Over HDMI) | ||
| Pre-Pro/Learning Remote | / | |
| On Screen Remote Programming | ||
| Bi-directional Remote Setup via GUI | ||
| Activity Based Remote | ||
| Smart Grid-Ready |
| RADIO | Onkyo TX-NR737 | Yamaha RX-A4A |
|---|---|---|
| Analog Tuner | FM/AM | FM/AM |
| Presets | 40 | 40 |
| Digital Radio | ||
| Internet Radio | TuneIn | |
| Pandora | ||
| Spotify | ||
| Tidal | ||
| Deezer | ||
| Napster | ||
| SiriusXM |
| CONSTRUCTION | Onkyo TX-NR737 | Yamaha RX-A4A |
|---|---|---|
| Solid Aluminum Front | ||
| A.R.T. Wedge | ||
| Speaker Terminals | 9 | 9 |
| Large Speaker Terminals | 9 | 9 |
| Color-Coded Speaker Terminals | ||
| Transparent High-Grade Speaker Terminals | ||
| Gold plated RCA terminals |
| POWER | Onkyo TX-NR737 | Yamaha RX-A4A |
|---|---|---|
| Power Supply | AC 120 V, 60 Hz | AC 120 V, 60 Hz |
| Independent Power Supply | 2 | |
| H.C.P.S. (High Current Power Supply) | Massive High Power Transformer | |
| Toroidal Transformer | ||
| Power Consumption | 6.9 A | 410 W |
| No Sound Power | 85 W | |
| Standby Power | 0.1 W | 0.4 W |
| Capacitor Bank | 10,000 µF | |
| ECO Mode / Hybrid Standby Function | ||
| Auto Power Standby |
| PHYSICAL | Onkyo TX-NR737 | Yamaha RX-A4A |
|---|---|---|
| Dimensions (W x H x D) | 435 mm x 175 mm x 379 mm 17-1/8" x 6-7/8" x 14-15/16" | 435 mm x 191 mm x 442 mm (with antenna: 435 mm x 270 mm x 442 mm) 17-1/8" x 7-1/2" x 17-3/8" (with antenna up: 17-1/8" x 10-5/8" x 17-3/8") |
| Weight | 11.5 kg (25.4 lbs) | 16.2 kg (35.7 lbs) |
| SPECIFICATIONS | Onkyo TX-NR737 | Yamaha RX-A4A |
|---|---|---|
| Power Output (8 Ω, 20 Hz - 20 kHz, 2 channel driven, FTC) | 110 W (0.08% THD) | 110 W (0.06% THD) |
| Power Output (8 Ω, 1 kHz, 2 channel Driven, FTC) | 120 W (0.9% THD) | |
| Rated Power Output (8 Ω, 1 kHz, 1 channel Driven) | 135 W (0.9% THD) | |
| Maximum Effective Output Power (8 Ω, 1 kHz, 1 channel Driven, JEITA) | 165 W (10% THD) | |
| Power Output (6 Ω, 1 kHz, 2 channel driven, FTC) | 125 W (0.7% THD) | |
| Power Output (6 Ω, 1 kHz, 1 channel driven, FTC) | 140 W (0.9% THD) | |
| Maximum Effective Power Output (6 Ω, 1 kHz, 1 channel driven, JEITA or IEC) | 185 W | 170 W (10% THD) |
| Rated Power Output (6 Ω, 1 kHz, 1 channel driven, IEC) | 170 W (1% THD) | |
| Rated Power Output (4 Ω, 1 kHz, 1 channel Driven) | 170 W (0.9% THD, Front) | |
| Dynamic Power per Channel (3 Ω, Front) | 250 W | |
| Dynamic Power per Channel (4 Ω, Front) | 220 W | |
| Dynamic Power per Channel (8 Ω, Front) | 130 W | |
| THD | 0.08% (20 Hz - 20 kHz, Half power) | 0.05% (AUDIO 2 etc. to Speaker Out, 20 Hz - 20 kHz, 55 W, 8 Ω) |
| THD (Phono) | 0.04% (Phono to PRE OUT, 1 kHz, 1 V) | |
| Damping Factor | 60 (Front, 1 kHz, 8 Ω) | 120 (Front, 1 kHz, 8 Ω) |
| Input Sensitivity and Impedance (Line) | 200 mV/47 kΩ (Line) | 220 mV/47 kΩ |
| Input Sensitivity and Impedance (Phono MM) | 2.5 mV/47 kΩ | 3.7 mV/47 kΩ |
| Maximum Input Sensitivity (Line) | 2.4 V (1 kHz, 0.5% THD) | |
| Maximum Input Sensitivity (Phono) | 45 mV (1 kHz, 0.5% THD) | |
| Rated Preout Level and Impedance | 200 mV/470 Ω | 1.0 V/470 Ω |
| Maximum Preout Level and Impedance | 2.0 V | |
| Maximum Lineout Level and Impedance | 2 V/2.2 kΩ | |
| Phono Overload | 70 mV (MM, 1kHz, 0.5% Direct) | |
| S/N Ratio (Line, IHF-A) | 106 dB | 110 dB |
| S/N Ratio (Phono MM, IHF-A) | 80 dB | 95 dB |
| Phono RIAA Deviation | 0±0.5 dB (20 Hz - 20 kHz) | |
| Frequency Response (Analog In) | 5 Hz - 100 kHz/+1 dB, -3 dB (Direct Mode) | +0/-3 dB (AUDIO 2 etc. to Front, Pure Direct, 10 Hz to 100 kHz) |
| Residual noise (IHF-A Network) | 150 µV (Speaker Out) | |
| Channel Separation at 1 kHz/10 kHz (LINE) | 75 dB/61 dB | |
| Channel Separation at 1 kHz/10 kHz (Phono) | 75 dB/60 dB | |
| DSD Sampling Rates via HDMI | 2.8 MHz, 5.6 MHz | 2.8 MHz |
| DSD Sampling Rates via USB | 2.8 MHz | 11.2 MHz, 5.6 MHz, 2.8 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 Response | 5 Hz - 100 MHz/+0 dB, -3 dB (Component) | |
| Ethernet Standard | 10BASE-T/100BASE-TX | 10BASE-T/100BASE-TX |
| Wi-Fi Standard | IEEE 802.11 b/g/n | IEEE 802.11 a/b/g/n/ac |
| Wi-Fi Terminal Frequency | 2.4 GHz | 2.4 GHz, 5 GHz |
| Bluetooth Version | 2․1 + EDR | 4․2 |
| Bluetooth Frequency | 2.4 GHz | 2.4 GHz |
| USB Terminal | USB2.0 5 V, 1 A | |
| FM Frequency | 87.5 MHz - 107.9 MHz | 87.5 MHz - 107.9 MHz |
| FM 50 dB Quiet Sensitivity (IHF, 1 kHz, 100% MOD.) | Mono: 3 µV (20.8 dBf) | |
| FM S/N Ratio | Mono/Stereo: 69 dB/68 dB | |
| FM Harmonic Distortion (IHF, 1 kHz) | Mono/Stereo: 0.5%/0.6% | |
| AM Frequency | 522/530 kHz - 1611/1710 kHz | 530 kHz - 1710 kHz |
| Warranty | 2 Years | 3 Years |
* - 480i/576i and 480p/576p only
** - 480i/576i only
*** - no 1080p/24 upconversion
**** - 1080p signal is not converted
For a full review please go to the review page:
