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Kramer 903 Personal Stereo Amplifier

B&H # KR903 MFR # 903
Kramer 903 Personal Stereo Amplifier


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Ship Time: 7-10 business days 
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Not eligible for free Expedited Shipping

Product Highlights

  • 20W Class D Amplification
  • 4x Inputs (RCA and Mini)
  • Treble, Bass and Volume Controls
  • Headphone Jack

You Pay: $200.00

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Experience big sound from a small bundle with the Kramer 903 Personal Stereo Audio Amplifier. The Kramer 903 includes multiple input and output options for any multimedia source. With 20W output capabilities and class-D technology, it provides enough power for any personal or small presentation applications. And with simple balance, treble, bass and volume controls, the Kramer 903 provides you the ability to customize the output of your audio.

In addition, the Kramer 903 can handle high volumes and heavy bass from only 12V of power without overheating because of its high efficiency power conversion. With 20W output capabilities and class-D technology, this machine provides enough power for any personal or small presentation applications. Also, the Kramer 903 includes a Loudness switch for automatic equalization in low-volume listening.

20W Total Power
The Kramer 903 can output up to 20W (at 4 Ohms) of beautiful audio from any multimedia source. It features highly efficient Class D operation.
Easy Controls
With easy volume and equalization controls, the 903 is a breeze to set up and customize to your liking.
Big Sound
The Kramer 903 runs off of just 12VDC but can output an enormous 20W of sound without overheating. In addition, it offers a S/N ratio of 77dB at 1KHz.
Input: 3x stereo on RCA connectors and 1x 3.5mm stereo mini-plug. Output: 1/4" headphone jack and terminal block for speakers.
With numerous inputs and outputs, the Kramer 903 is compatible with any multimedia or audio source.
Compact MegaTOOLS
Two units can be rack mounted side-by-side in a 1U rack space with the optional RK-T2B rack adapter.
Number of Channels 2
Power Rating 10W per channel at 4 Ohms
Signal to Noise Ratio 77dB @ 1KHz
Total Harmonic Distortion (THD) 0.5%
Input 1x audio stereo 1Vpp/50k on 3.5mm mini phone connector, 3x audio stereo 1Vpp/50k on RCA connectors
Output 1x stereo headphone on a 1/4" connector, 1x T-block for speaker connection
Power Requirements 12VDC
Dimensions (HxWxD) 1 x 7.5 x 5.3" (2.5 x 19 x 13.5cm)
Weight 1.3 lbs (0.6kg)
Kramer 903 Personal Stereo Amplifier
  • 12VDC Power Supply
  • Owner's Manual
  • 3-Year Warranty

    by PowerReviews
    Kramer903 Personal Stereo Amplifier

    (based on 2 reviews)

    Ratings Distribution

    • 5 Stars



    • 4 Stars



    • 3 Stars



    • 2 Stars



    • 1 Stars





        Best Uses

            • Reviewer Profile:
            • Audiophile (3)

          Reviewed by 2 customers

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          Displaying reviews 1-2

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          Lil' Engine That Could

          By Louie the Lounge Lizard

          from Jackson, Miss.

          About Me Audiophile

          Verified Reviewer


          • Accurate Controls
          • Class D Green
          • Clean Sound
          • Durable
          • Runs Cool


          • Lack Of Power
          • Need Efficient Speakers
          • Switching Thumps

          Best Uses

          • Basic Systems
          • Desktop Audio
          • Smaller Rooms

          Comments about Kramer 903 Personal Stereo Amplifier:

          This tiny package works great for desktop sound or for use with very efficient speakers. I used mine with a pair of Klipsch RB-5's for quite a while with great results. The sound is refined and detailed and infinitely adjustable to your taste with bass, mid, and treble controls. The only drawbacks for the average user is the lack of power (5 per channel @8 ohms) and being limited to bare wire (my preference anyway). But, if you have a small listening area and efficient speakers you won't be able to tell the 903 is lacking in anything throughout the spectrum.

          Oh yes, the Kramer support team is excellent.

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          (1 of 1 customers found this review helpful)


          Just what we needed

          By Mr. Head

          from Tuxedo Park, NY

          About Me Audiophile, Musically Inclined, Professional, Tech Savvy

          Verified Buyer


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


          • Speaker Connection

          Best Uses

          • Basic Systems
          • Smaller Rooms

          Comments about Kramer 903 Personal Stereo Amplifier:

          It was smaller than we expected. We are using it on a cart that holds a stereo, and a keyboard and needed something small but strong enough to fill up a classroom. This is just what we needed. Plus it's very straightforward to use. Only thing tricky is the speaker wire connection, for those not familiar with actually having to use a screwdriver, it might be confusing.

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