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Integrated Digital Amplifier

Reproducing Audio with a Sense of Speed and Energy

The key difference between analog and digital amplification is the manner in which the input signal is amplified. Put simply, with analog amplification, the analog input signal is amplified without modification. On the other hand, with digital amplification, the analog signal is converted into a pulse (digital) signal and then amplified, before being converted back into an analog signal. Generally speaking, a digital amplifier offers greater power efficiency (up to 90%) and a smaller chassis size, as there is no need for a large heat sink. Besides these advantages, Onkyo also believes it is possible to improve sound quality, as digital amplifiers have a greater ability to reproduce sound with speed and energy.This is the focus with the A-9355 digital amplifier. By countering spike noise with Onkyo’s Vector Linear (VL) Digital modulation circuit and negating voltage fluctuations through the power supply, the A-9355 is aimed at the music lover who wants to get the best out of their collection.The concept also draws on build quality that strives to take audio reproduction to its limits.


  • 70 W/Ch Minimum into 4Ù, 1 kHz, 2 Channels Driven, IEC
  • Exclusive Vector Linear (VL) Digital Technology for Accurate Conversion
  • All Discrete Output Stage Circuitry to Inhibit Audio Signal Interference
  • Optimum Gain Volume Circuitry to Preserve Signal Purity
  • Massive Power Transformer
  • Audiophile-Grade Capacitors
  • Low-Impedance,Thick Bus Plate for Perfect Grounding
  • Precision Motor-Driven Volume Control
  • Tone Control (Bass,Treble, Loudness On/Off)
  • Pure Direct Mode for Bypassing Tone Control
  • Discrete Phono Equalizer Circuitry for Superior Sound Quality
  • 5 Audio Inputs and 2 Outputs
  • Phono Input
  • Speaker A/B Drive
  • High-Rigidity,Anti-Resonant Chassis to Reduce Vibrations
  • Aluminum Front Panel and Volume Knob
  • Banana Plug-Compatible Speaker Posts
  • Gold-Plated Headphone Jack
  • Heavy-Duty Power Cord
  • Compatible with RI Dock for the iPod
  • RI (Remote Interactive) Remote Control



RSS News

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Press Release dated: 2 Jul 2019
Premium RZ Series AVRs Get a High-Octane Upgrade with Strengthened Amps and IMAX® Enhanced Certification

ONKYO, JAPAN. Onkyo has added two THX® Certified Select™ and IMAX® Enhanced*1 certified Network A/V Receivers to its… more

Press Release dated: 30 Apr 2019
Onkyo issues Firmware Update for Apple AirPlay 2

OSAKA, JAPAN. Onkyo is pleased to confirm the release of a firmware update that will add Apple AirPlay 2 capabilities to… more

Press Release dated: 18 Apr 2019
Onkyo Unveils A High-Performance THX® Certified Select™ AV Receiver and Flexible 3D Audio-Ready Home Cinema Packages

OSAKA, JAPAN. Onkyo is continuing its mission to make home entertainment more immersive and ever more adaptable with the… more

Press Release dated: 26 Mar 2019
Onkyo Launches Value-Packed AVRs with Dolby Atmos® and DTS:X® for 3D Audio Through Any Speaker Layout

OSAKA, JAPAN. Onkyo presents a persuasive value proposition with two Dolby Atmos and DTS:X enabled A/V receivers, the 5.2-ch… more

Press Release dated: 6 Feb 2019