ONKYO TX-RZ 900

Pre owned. In good condition. Shows minor signs of wear, slightly visible in the photos. Supplied with remote control, manual and accessories, without original packaging.

7.2-channel AV receiver designed for home cinema systems and music playback in both stereo and multichannel configurations. It supports Dolby Atmos and DTS audio formats, as well as Dolby TrueHD and DTS-HD Master Audio, and carries THX Select2 Plus certification. The amplification section features WRAT (Wide Range Amplifier Technology), a three-stage inverted Darlington circuit and a dedicated toroidal transformer designed to provide high current delivery. Double Push-Pull amplification is also employed for the front channels.

The construction features an aluminium front panel, large-capacity capacitors and gold-plated speaker terminals. The VLSC (Vector Linear Shaping Circuitry) reduces high-frequency noise introduced during digital-to-analogue conversion. For stereo listening, the Pure Direct Analog Path mode provides a dedicated analogue signal path.

The digital-to-analogue conversion section uses an Asahi Kasei AK4458 DAC, supporting PCM signals up to 24-bit/192 kHz and DSD up to 5.6 MHz. The system also incorporates Advanced Music Optimizer technology, designed to improve the reproduction of compressed audio files and signals from digital sources.

Video connectivity includes eight HDMI 2.0a inputs, compatible with 4K Ultra HD signals up to 60 Hz, 4:4:4 colour sampling and HDCP 2.2 protection. An additional HDMI output dedicated to Zone 2 allows 4K video signals to be distributed to a separate room. Traditional video connections include two Component inputs and one output, as well as three Composite inputs and one output.

Audio connectivity includes RCA analogue inputs, a Phono input compatible with MM cartridges and five digital inputs, comprising three optical and two coaxial connections. Additional connections include a USB port, Ethernet interface, two subwoofer pre-outs and 7.2-channel preamplifier outputs. RS-232, 12 V trigger and IR connections are also provided for integration into external control systems.

Wireless connectivity includes Wi-Fi and Bluetooth, with DLNA and AirPlay support. Network connectivity provides access to streaming services and internet radio stations, including TuneIn Radio, Spotify and Deezer. The receiver's functions and playback can also be controlled through Onkyo applications for iOS and Android devices.

The AccuEQ Room Calibration system automatically analyses the room's acoustic characteristics and adjusts the speaker configuration to optimise playback for the listening environment. Signal processing is further supported by dual 32-bit DSPs. Multiroom functionality includes an amplified Zone 2 with a dedicated power amplifier section, together with Zone 2 pre-outs and a dedicated Zone 3 line output. The Whole House function allows audio distribution across multiple rooms. Bi-amplification for the front speakers is also supported.

Technical specifications:

• Output power: 200 W per channel (6 Ω, 1 kHz, 1% THD, 1 channel driven, IEC); 235 W per channel (6 Ω, 1 kHz, 1 channel driven, JEITA)
• Dynamic power: 320 W (3 Ω, front channels); 270 W (4 Ω, front channels); 160 W (8 Ω, front channels)
• Channel configuration: 7.2
• Supported audio formats: Dolby Atmos; DTS; Dolby TrueHD; DTS-HD Master Audio
• Certification: THX Select2 Plus
• Amplification technology: WRAT (Wide Range Amplifier Technology); three-stage inverted Darlington circuit; double Push-Pull amplification for front channels
• Power supply for output stage: High-current toroidal transformer
• D/A converter: Asahi Kasei AK4458
• Digital audio formats: PCM up to 24-bit/192 kHz; DSD up to 5.6 MHz
• Digital processing: Dual 32-bit DSP; VLSC technology; PLL jitter control for S/PDIF signals
• Frequency response: 5 Hz – 100 kHz (+1 dB/-3 dB, Direct mode)
• Total harmonic distortion: 0.08% (20 Hz – 20 kHz, half power)
• Damping factor: >40 (front channels, 1 kHz, 8 Ω)
• Speaker impedance: 4 – 16 Ω
• Input sensitivity and impedance: 200 mV/47 kΩ (line); 3.5 mV/47 kΩ (MM Phono)
• Phono input overload: 70 mV (MM, 1 kHz, 0.5%)
• Signal-to-noise ratio: 106 dB (line, IHF-A); 80 dB (MM Phono, IHF-A)
• Tone controls: Bass ±10 dB at 20 Hz; treble ±10 dB at 20 kHz
• HDMI inputs: 8 (1 front and 7 rear), HDMI 2.0a compatible; 4K Ultra HD up to 60 Hz; 4:4:4 colour space; HDCP 2.2
• HDMI outputs: 2 (Main and Zone 2)
• Component video inputs: 2
• Component video outputs: 1
• Composite video inputs: 3
• Composite video outputs: 1
• Digital audio inputs: 5 (3 optical and 2 coaxial)
• Analogue audio inputs: 9 RCA
• Phono input: 1 MM
• USB connections: 1 USB input for storage devices
• Network connectivity: Ethernet; Wi-Fi; DLNA; AirPlay
• Wireless connectivity: Bluetooth
• Streaming services: TuneIn Radio; Spotify; Deezer
• Preamplifier outputs: 7.2 channels; 2 subwoofer outputs; Zone 2; Zone 3
• Multiroom functionality: Amplified Zone 2; Zone 2 pre-out; Zone 3 line output; Whole House function
• Control connections: IR input; assignable 12 V trigger; RS-232
• Room calibration: AccuEQ Room Calibration
• Audio functions: Advanced Music Optimizer; Pure Direct Analog Path; front-channel bi-amplification
• Headphone output: 6.3 mm jack
• Power supply: 220–240 V AC, 50/60 Hz
• Dimensions (W x H x D): 435 x 201.5 x 433.5 mm (height 261.5 mm with antennas)
• Weight: 18 kg