The Onkyo A-50 Network Integrated Amplifier isn't just an amplifier: it's the gateway to a new way of experiencing music, where analog purity meets digital intelligence. Part of the prestigious Icon Series , this jewel of Japanese engineering transforms every listening session into an immersive experience, blurring the line between digital source and absolute sonic fidelity.
Onkyo Engineering: When Technique Becomes Emotion
The beating heart of the A-50 is its three-stage Inverted Darlington amplifier , a sophisticated circuit solution that delivers 140W into 8Ω (180W into 4Ω) with total harmonic distortion of less than 0,7%. This architecture, combined with the DIDRC (Dynamic Intermodulation Distortion Reduction) circuitry, ensures a crystal-clear signal even at the highest power levels, preserving the dynamics and micro-details that make the difference between hearing and feeling the music.
The DAC section deserves a chapter of its own: the premium 32-bit/768kHz stereo converter handles ultra-high-resolution audio streams with surgical precision, supporting lossless formats from Qobuz, TIDAL, and local files via USB-A. The fan-less design eliminates all mechanical noise, while custom 10000µF capacitors —developed exclusively for Onkyo—stabilize the power supply even during the most demanding transients. The extruded aluminum heatsink and rigid light-alloy front panel reduce parasitic vibrations that would compromise the soundstage.
The switchable MM/MC phono input is built with dedicated, high-quality components, allowing you to connect turntables with moving magnet or moving coil cartridges without external preamplifiers. The stated frequency response of 5Hz to 100kHz (+1/-3dB) ensures deep sub-bass extension and clear highs, without premature roll-off.
The Sound Experience: Transparency, Control, Engagement
Where the A-50 truly shines is in its ability to make you forget the electronics, letting only the music shine. The high-current Class AB amplifier authoritatively drives speakers from compact bookshelf speakers to demanding floorstanding speakers (4-16Ω impedance), maintaining iron-clad control over the woofers even at the lowest frequencies. The result? Deep, articulated bass, natural vocals positioned at the center of the stage, detailed highs without harshness.
Dirac Live calibration ( basic version included, full optional) analyzes your room's acoustics via the setup microphone and automatically corrects room resonances between 500Hz and 20kHz. This means that even in untreated rooms, the A-50 delivers a precise and balanced stereo image, adapting to your room rather than asking you to adapt the room to the system.
Headphone listening benefits from the dedicated 6,3mm output with dedicated amplification, capable of driving high-impedance headphones without compromising dynamics. Hardware tone controls (±10dB at 100Hz and 10kHz) allow for tactile adjustments to tailor the sound to specific recordings or personal preferences.
Total Connectivity: Every Source, Always Accessible
The A-50 is designed to be the hub of your audio system. Three pairs of RCA inputs accommodate CD players, external DACs, or analog sources, while HDMI ARC allows integration with smart TVs for audio far superior to built-in speakers. Two optical inputs and one coaxial input handle digital streamers and game consoles.
The section network/streaming This is where the A-50 shines in modernity: Wi-Fi dual-band integrated, gigabit Ethernet port, Bluetooth with codec aptX HD to transportmissionand wireless hi-res from smartphones. Natively compatible with Spotify Connect, TIDAL Connect, Qobuz Connect, Amazon Music HD, AirPlay 2, Chromecast and certified Roon Ready, this amplifier handles any streaming platform without the need for additional devices.
The Onkyo Controller app (iOS/Android) turns your smartphone into a full-featured remote control, allowing you to browse libraries, adjust volumes, switch inputs, and control Dirac Live from the comfort of your couch. The RCA pre-out allows you to add an external power amplifier or active subwoofer for future expansion.
Practical Setup and Recommended Pairings
The A-50 is plug-and-play but rewards care: place it on a stable surface (the oval chassis minimizes contact surface area, reducing vibrations), leave 10cm of space above for heat dissipation, and connect the speakers with adequately sized cables (minimum 2,5mm² for runs over 3 meters). Ideal pairings include sensitive (>88dB) floorstanding speakers such as the Klipsch Reference, KEF Q Series, or quality bookshelf speakers such as the ELAC Debut, Wharfedale Diamond.
For turntables, opt for high-end MM cartridges (Ortofon 2M Blue/Bronze, Audio-Technica VM540ML) or MC cartridges if you already have dedicated preamps. The USB-A input plays files from external flash drives/HDDs up to 768kHz PCM and DSD256, making it perfect for audiophiles with high-resolution digital collections.
Onkyo Heritage: 75 Years of Audio Innovation
Founded in 1946 in Osaka, Onkyo (literally "audio sound") has built its reputation on one principle: absolute fidelity to the source, without coloration. The Icon Series , of which the A-50 is the flagship, represents the evolution of decades of research in amplification, noise reduction, and anti-resonance design. Each component is selected for longevity and performance, with rigorous testing ensuring long-lasting reliability.
The A-50 has received recognition from the international specialist press for its quality/price ratio and versatility, positioning itself as a reference in the sub-€2000 network integrated amplifier range.
Onkyo A-50 vs. Cambridge Audio CXA61: The Difference That Matters
Compared to the Cambridge CXA61, the A-50 offers more power (140W vs. 60W), integrated Dirac Live (missing in the Cambridge), native cross-platform streaming, and HDMI ARC input. The Cambridge focuses on a British aesthetic and a slightly softer sound, while the Onkyo prioritizes transparency, dynamics, and modern features. For those looking for a future-proof system with room calibration, the A-50 is the superior choice.
FAQ
1. What is the difference between the Onkyo A-50 and a traditional amplifier?
The Onkyo A-50 is a network integrated amplifier that combines a preamplifier, power amplifier, hi-res DAC (32-bit/768kHz), multiplatform streamer, and Dirac Live calibration in a single chassis. Unlike traditional amplifiers, it requires no external components for streaming from Spotify, TIDAL, Qobuz, or AirPlay 2, and includes HDMI ARC for TV integration. The built-in MM/MC phono stage eliminates the need for external preamplifiers and turntables. It's the ideal all-in-one solution for modern audiophiles who want quality and versatility without multiple separates.
2. Is the Onkyo A-50 powerful enough for floorstanding speakers?
Absolutely. With 140W into 8Ω and 180W into 4Ω in Class AB, the A-50 authoritatively drives floorstanding speakers up to medium sensitivities (85-88dB). The high-current Inverted Darlington architecture ensures excellent control over the woofers even in medium-large rooms (25-40m²). Optimal pairings include Klipsch Reference Premiere, KEF Q Series, Focal Chora, Wharfedale Evo. For rooms over 50m² or low-sensitivity speakers (<85dB), consider upgrading to the separate M-80 (200W) combined with the P-80 preamp from the same Icon Series.
3. Can I use the Onkyo A-50 without Dirac Live calibration?
Yes, Dirac Live is optional and completely bypassable. The A-50 sounds excellent even without calibration, thanks to the DIDRC circuitry and premium DAC. However, Dirac Live (included free in the basic 500Hz-20kHz version) significantly improves response in untreated environments, correcting room resonances and enhancing stereo imaging. The calibration process takes 10-15 minutes with the included microphone and the app. The full-band Dirac Live version (paid upgrade) extends correction down to 20Hz for complete control, even over bass.
4. Which streaming services does the Onkyo A-50 natively support?
The A-50 natively integrates: Spotify Connect, TIDAL Connect, Qobuz Connect (with quality up to 24bit/192kHz), Amazon Music HD, AirPlay 2 (for Apple ecosystem), Chromecast built-in (Android/Google Home), Roon Ready (for Roon Core users), Qplay and TuneIn Radio for global web radio. All services are accessible via dedicated apps or the Onkyo Controller, without the need for Bluetooth (which is still available with the aptX HD codec). It also supports direct playback from USB-A storage devices (flash drives/HDDs) with files up to DSD256 and 768kHz PCM.
5. Does the Onkyo A-50's phono input work with both MM and MC cartridges?
Yes, the phono input is switchable MM/MC via a switch on the rear panel, eliminating the need for external phono stages. Dedicated circuitry with high-quality components ensures accurate RIAA curves and extremely low noise. Ideal for popular moving magnet cartridges (Ortofon 2M, Audio-Technica VM, Nagaoka MP) and high-output moving coil cartridges (Denon DL-103, Hana). For very low-output MCs (<0,3mV), a dedicated external phono stage may offer greater gain margins, but for most audiophiles, the built-in phono stage is more than sufficient.
