Onkyo A-9555 Integrated Digital Amplifier (Black)

  • No Longer Available
  • B&H # ONA9555B
  • Mfr# A-9555

Product Highlights

  • 2 x 85W Power
  • 10 Hz-60 kHz Frequency Response
  • 100 dB S/N Ratio
  • 7 Stereo Inputs
  • 2 Tape/MD Record Loops
  • Phono Preamp Circuit
  • Optimum Gain Volume Circuitry
  • Remote Interactive (RI) Interface

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With its continued excellence in sound reproduction, Onkyo has once again created a versatile stereo amplifier for the music lover in you. Onkyo's A-9555 Integrated Digital Amplifier offers superb functionality that will be hard to match. Designed with Onkyo's exclusives like Vector Linear (VL) Digital Technology and Optimum Gain Volume Circuitry, the A-9555 offers the cleanest signal on the market.

In a nutshell, the Onkyo A-9555 is an 85W 2-Channel stereo amplifier capable of delivering breathtaking stereo sound. It features inputs for up to seven stereo source components, including two tape/MD record loops and a high-quality phono preamplifier circuit. Because of the high efficiency of its design, the A-9555 produces remarkably little heat production or distortion, thus enabling each channel to output exceptional sound quality, and clarity in every audible detail.

Engineered Excellence and Design
As a centerpiece of home entertainment, the Onkyo A-9555 offers exquisite functionality that will be hard to match. Simplicity of design and superior quality of its digital processors, power supply, and construction make the A-9555 a definitive leader in the industry.
Vector Linear (VL) Digital Technology
Onkyo's VL Digital Technology is the backbone to the A-9555's exceptional analog-to-digital conversion, thus reducing analog noise and reproducing a digital audio signal that is unsurpassed.
Pure Stream Power Supply
The A-9555 features a large-capacity transformer that reproduces low impedance levels and an expanded transient response, offering a full-range of audio clarity and detail.
Superior Sound Quality
With a frequency response of 10Hz - 60KHz, the A-9555 can reproduce a full musical sound range from deep bass tones to ultra-high trumpet blasts.
Optimum Gain Volume Circuitry
This feature eliminates the possibility of excessive noise that is normally generated at lower volumes.
Remote Interactive (RI) Interface
Remote Interactive (RI) capability enables you to simply connect your iPod to your receiver through Onkyo's RI Dock option for the iPod (DS-A1). Your iPod effectively becomes another Onkyo component flowing through the A-9555 amplifier.
Amplifier
Number of Channels 2
Power Rating 85W @ 8 Ohms
Frequency Response 10Hz - 60kHz (+1 dB, -3 dB, CD)
Signal to Noise Ratio 100 dB
Total Harmonic Distortion (THD) 0.08%
Connectors
Input Analog Audio: - RCA x7 (Stereo)
Output Analog Audio: - RCA x2 (Stereo)
Speaker: - Binding-Post x8 (A/B Switchable)
Headphone: - 1/4" Phone Plug
General
Power Requirements 110W
Dimensions (HxWxD) 5.8 x 17.1 x 16.9" (148 x 435 x 431mm)
Weight 28.7 lbs (13 kg)

REVIEW SNAPSHOT®

by PowerReviews
Onkyo A-9555 Integrated Digital Amplifier (Black)
 
4.8

(based on 10 reviews)

Ratings Distribution

  • 5 Stars

     

    (9)

  • 4 Stars

     

    (0)

  • 3 Stars

     

    (1)

  • 2 Stars

     

    (0)

  • 1 Stars

     

    (0)

100%

of respondents would recommend this to a friend.

Pros

  • Good power output (7)
  • Easy to setup (6)
  • Great sound quality (6)
  • Simple controls (6)
  • Good audio (3)

Cons

    Best Uses

    • Basic systems (6)
      • Reviewer Profile:
      • Audiophile (7), Practical (4)
      • Was this a gift?:
      • No (4)

    Most Liked Positive Review

     

    Fabulous Amplifier, worth every penny and more

    I ordered the Onkyo A-9555 Integrated Digital Amplifier a few days ago, and it arrived on time in a factory-sealed box. In setting up the amp, I got the feeling of solid Japanese...Read complete review

    I ordered the Onkyo A-9555 Integrated Digital Amplifier a few days ago, and it arrived on time in a factory-sealed box. In setting up the amp, I got the feeling of solid Japanese quality. The switches and controls have a good quality feel to them, no major complaints here. The remote control has lots of infrared power, so you can point the remote anywhere in the room (even behind you when the amp is in front) and the amp responds.I won't talk much about the controls and such, since Onkyo gives you lots of description on their website. Let's talk sound quality. For neophyte audiophiles, the basic first-impression difference between an average mass-market cheap amp and a high-end audiophile amp is in the midrange and highs. With a cheap amp, the first impression you get is that the midrange and highs are rolled off, indistinct and cloudy-sounding. With a high-end amp, the midrange and highs are loud, clear, sharp, and distinct. The uninitiated may even think that a low-end amp sounds more bassey and the high-end amp shrill, but if you listen closely you'll hear that the cheap amp sounds confused and soft (it only sounds more bassey because it lacks the higher frequencies), and the high-end amp sounds has powerfully strong and clear midrange and highs. So how does the Onkyo sound. In a nutshell, it truly merits an audiophile amp rating. On a scale of 1 to 10, 5 being a cheap mass market amp, 10 being a top of the line audiophile amp, and 7 being a typical budget audiophile amp, the Onkyo would rate something like an 8.5. In other words, it's better than any budget audiophile amp (including those touted as being better than others at twice the price) and possesses the essential sound characteristics of expensive amps.You get a clean, clear, well-defined sound, from bass to treble, just like an expensive amp. Compare this amp to an expensive amp and the difference isn't in essential character (they're about the same) but in degree of accuracy. The expensive amp will have more cleanliness and clarity, more mids, more highs, a deeper soundstage, etc. BUT NOT TERRIBLY MUCH MORE. For me, the improvement that an expensive amp would bring over the Onkyo isn't worth paying the extra money. For $500, you get the essential sound quality of an expensive amp, a sound so close, you won't care about the remaining sound quality difference because it would cost too much more to get. And that is where part of the joy in owning this fine product comes in. Spend several grand and get a superamp - you'll be happy to hear superb sound. Spend $500 and get so darn close to the same superb sound and you'll be even happier because you were a wise consumer and bought good value for money.

    Expertise: I'm pretty picky about getting good value for money

    Problems Encountered: One thing I don't like about this unit is that it lacks a balance control, even if it gets neutralized when you hit the Pure Direct button. One lingering concern is whether the class D amp will have a service life as long as a conventional amp, since the switching circuits cause more stress on the electronics than a simple analog amp. I'm just speculating.

    Previous Equivalent Item Owned: NAD, Cyrus

    Items I Recommend: Good speakers (having saved money buying the Onkyo, you can put more money into the speakers).

    VS

    Most Liked Negative Review

     

    crystal clarity, but lack of power

    I use it for playing classical music and occasionally DVD sound.
    I bought this to replace my old Onkyo M501, from the spec, they look similar, the overall impression is A-9555...Read complete review

    I use it for playing classical music and occasionally DVD sound.
    I bought this to replace my old Onkyo M501, from the spec, they look similar, the overall impression is A-9555 has better clarity but the low frequency production is not as good as M501, for the overall experience I would prefer M501. since A-9555 is a integrated amp, better remote control etc, but I would rather have a better overall sound quality.

    REVIEWS

    Reviewed by 10 customers

    Sort by

    Displaying reviews 1-10

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    (1 of 1 customers found this review helpful)

     
    5.0

    Very Clean and Quiet Amplifier

    By :)

    from Ohio

    About Me Audiophile, Movie Enthusiast

    Verified Buyer

    Pros

    • Accurate Controls
    • Easy To Setup
    • Good Power Output
    • Great Sound Quality

    Cons

      Best Uses

      • Basic Systems
      • Home Theater

      Comments about Onkyo A-9555 Integrated Digital Amplifier (Black):

      This is a very clean and quiet amplifier. Strong bass, but a weak treble for the pure direct option. I can hear more detail in music and movie, but it does not have the bass delay vibration from a subwofer when watching a movie. In some songs, it is not that I can hear more sound, it is how the sound are play that make it seems more real.

      • Was this a gift?:
      • No

      Comment on this review

       
      5.0

      Wonderful Amp

      By love accurate sound

      from ohio

      About Me Audiophile, Movie Enthusiast

      Pros

      • Accurate Controls
      • Easy To Setup
      • Good Power Output
      • Great Sound Quality

      Cons

        Best Uses

        • Basic Systems

        Comments about Onkyo A-9555 Integrated Digital Amplifier (Black):

        This amp is simple and precise. It is clear and quiet. I am very impressed.

        • Was this a gift?:
        • No

        Comment on this review

         
        5.0

        A VERY NICE AMPLIFIER

        By Music Mac

        from Central Wisconsin

        About Me Practical

        Verified Buyer

        Pros

        • Accurate Controls
        • Easy To Setup
        • Energy Efficient
        • Good Power Output
        • Good Remote Control
        • Great Sound Quality

        Cons

          Best Uses

          • Basic Systems
          • Larger Rooms

          Comments about Onkyo A-9555 Integrated Digital Amplifier (Black):

          This amp brings back memories of equipment that was basic and solid. Onkyo has done a wonderful job of mixing new technology with old simplicity. The pure direct function reminds me of tube amp sound. The inputs allow many component options from tape to cd to phono.Its sound is sweet and powerful with great separation.Thank you B&H for offering an outstanding amp at a great value.

          • Was this a gift?:
          • No

          Comment on this review

           
          5.0

          So Far, So Good

          By Dan

          from New Haven, CT

          About Me Audiophile, Practical, Tech Savvy

          Verified Buyer

          Pros

          • Easy To Setup
          • Good Power Output
          • Good Remote Control
          • Great Sound Quality

          Cons

            Best Uses

            • Basic Systems
            • Larger Rooms
            • Multiple Rooms / Whole House

            Comments about Onkyo A-9555 Integrated Digital Amplifier (Black):

            I bought this to replace a 20 year old receiver from my dad. Vinyl, CDs, iPod all sound better than ever.

            I may not be as "acoustically sensitive" as some, but for the price, I have no complaints.

            • Was this a gift?:
            • No

            Comment on this review

             
            5.0

            Love the sound

            By Lee

            from Bellingham, WA

            About Me Audiophile, Practical

            Verified Buyer

            Pros

            • Accurate Controls
            • Easy Setup
            • Good Power Output
            • Great Sound Quality

            Cons

            • Confusing / Bad Remote Control

            Best Uses

            • Basic Systems
            • Multiple Rooms / Whole House

            Comments about Onkyo A-9555 Integrated Digital Amplifier (Black):

            I'd upgraded all my audio equipment last year except for the amp. We decided to stick with our 1970's Kenwood KA-3500. A classic and it worked w/ the new and wonderful turntable, tuner and cd player.

            Well after reading a lot of reviews I finally bought the Onkyo amp and wasn't sure if it would make much of a difference. Right away, huge difference. Great sound. We LOVE it. It's wonderful and fills our rooms with much more accurate, richer sounds. I had no idea the amp would make such an impact!

            Comment on this review

             
            5.0

            A classic no-frills stereo receiver

            By DCI

            from Tacoma, WA

            About Me Audiophile, Practical

            Verified Buyer

            Pros

            • Accurate Controls
            • Clean Sound
            • Durable
            • Easy Setup
            • Good Power Output
            • Good Remote Control
            • Great Sound Quality

            Cons

              Best Uses

              • Basic Systems

              Comments about Onkyo A-9555 Integrated Digital Amplifier (Black):

              This Onkyo A-9555 replaced a 10-year old Onkyo 9711. I am a long-standing Onkyo loyalist and the A-9555 has done nothing to tarnish my view of the firm's products. If you are interest in nothing but good clean and true old-school stereo sound without bells and whistles this is your amplifier. Handles turntables too! Excellent value.

              Comment on this review

               
              3.0

              crystal clarity, but lack of power

              By mj

              from san jose, ca

              About Me Musically Inclined

              Verified Buyer

              Pros

              • Clean Sound
              • Easy To Set Up

              Cons

                Best Uses

                • Audiophiles

                Comments about Onkyo A-9555 Integrated Digital Amplifier (Black):

                I use it for playing classical music and occasionally DVD sound.
                I bought this to replace my old Onkyo M501, from the spec, they look similar, the overall impression is A-9555 has better clarity but the low frequency production is not as good as M501, for the overall experience I would prefer M501. since A-9555 is a integrated amp, better remote control etc, but I would rather have a better overall sound quality.

                Comment on this review

                 
                5.0

                Satisfied

                By Mr Silence

                from Ames,IA

                About Me Musically Inclined, Professional

                Verified Buyer

                Pros

                • Accurate Controls
                • Clean Sound
                • Durable
                • Easy To Set Up
                • Good Power

                Cons

                  Best Uses

                  • Home Theater

                  Comments about Onkyo A-9555 Integrated Digital Amplifier (Black):

                  Fantastic product - loud and clear sound. Firm and solid.

                  It is worth the money I paid.

                  Comment on this review

                  (7 of 7 customers found this review helpful)

                   
                  5.0

                  Fabulous Amplifier, worth every penny and more

                  By Martin

                  from Vancouver, BC

                  Comments about Onkyo A-9555 Integrated Digital Amplifier (Black):

                  I ordered the Onkyo A-9555 Integrated Digital Amplifier a few days ago, and it arrived on time in a factory-sealed box. In setting up the amp, I got the feeling of solid Japanese quality. The switches and controls have a good quality feel to them, no major complaints here. The remote control has lots of infrared power, so you can point the remote anywhere in the room (even behind you when the amp is in front) and the amp responds.I won't talk much about the controls and such, since Onkyo gives you lots of description on their website. Let's talk sound quality. For neophyte audiophiles, the basic first-impression difference between an average mass-market cheap amp and a high-end audiophile amp is in the midrange and highs. With a cheap amp, the first impression you get is that the midrange and highs are rolled off, indistinct and cloudy-sounding. With a high-end amp, the midrange and highs are loud, clear, sharp, and distinct. The uninitiated may even think that a low-end amp sounds more bassey and the high-end amp shrill, but if you listen closely you'll hear that the cheap amp sounds confused and soft (it only sounds more bassey because it lacks the higher frequencies), and the high-end amp sounds has powerfully strong and clear midrange and highs. So how does the Onkyo sound. In a nutshell, it truly merits an audiophile amp rating. On a scale of 1 to 10, 5 being a cheap mass market amp, 10 being a top of the line audiophile amp, and 7 being a typical budget audiophile amp, the Onkyo would rate something like an 8.5. In other words, it's better than any budget audiophile amp (including those touted as being better than others at twice the price) and possesses the essential sound characteristics of expensive amps.You get a clean, clear, well-defined sound, from bass to treble, just like an expensive amp. Compare this amp to an expensive amp and the difference isn't in essential character (they're about the same) but in degree of accuracy. The expensive amp will have more cleanliness and clarity, more mids, more highs, a deeper soundstage, etc. BUT NOT TERRIBLY MUCH MORE. For me, the improvement that an expensive amp would bring over the Onkyo isn't worth paying the extra money. For $500, you get the essential sound quality of an expensive amp, a sound so close, you won't care about the remaining sound quality difference because it would cost too much more to get. And that is where part of the joy in owning this fine product comes in. Spend several grand and get a superamp - you'll be happy to hear superb sound. Spend $500 and get so darn close to the same superb sound and you'll be even happier because you were a wise consumer and bought good value for money.

                  Expertise: I'm pretty picky about getting good value for money

                  Problems Encountered: One thing I don't like about this unit is that it lacks a balance control, even if it gets neutralized when you hit the Pure Direct button. One lingering concern is whether the class D amp will have a service life as long as a conventional amp, since the switching circuits cause more stress on the electronics than a simple analog amp. I'm just speculating.

                  Previous Equivalent Item Owned: NAD, Cyrus

                  Items I Recommend: Good speakers (having saved money buying the Onkyo, you can put more money into the speakers).

                  Comment on this review

                   
                  5.0

                  Great bang for buck

                  By Peregrine

                  from NJ

                  Comments about Onkyo A-9555 Integrated Digital Amplifier (Black):

                  This class D PWM integrated amp is competitive with somevery elite gear - you will have to pay over $2K to getsomething that is significantly better. Due to the class Ddesign it is very efficient and runs cool too. The remotecontrol is also excellent.Onkyo has a classic on their hands with this model. You canbuild a very nice 2 ch system with this.

                  Previous Equivalent Items Owned: NAD, Krell

                  Items I Recommend: NHT Classic 3, Revel M-22

                  Comment on this review

                  Displaying reviews 1-10

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                  What's in the Box

                  Onkyo A-9555 Integrated Digital Amplifier (Black)
                  • RC-627C Remote Control
                  • Power Cord
                  • Instruction Manual
                  • 2-Year Parts and Labor Warranty
                   
                   
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