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Kramer Electronics 903 4x1 Personal Stereo Audio Amplifier and Switcher, 10 Watts RMS Per Channel

SKU: KR903

This item is no longer available.

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TRUSTED PROTECTION PLANS, EXCEPTIONAL SERVICE.

Invest In Your Gear and Peace Of Mind!

Accidents happen where life happens. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failure, and more.

Repair or Replacement

Repair or Replacement

If we can’t fix it, we’ll replace it at no additional cost.

Accidental Damage

Accidental Damage

Protect your product from drops, spills, and more.

Peace of Mind

Peace of Mind

Enjoy your gear without fear. We have you covered!

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Malfunction Protection

When regular use of your product over time results in mechanical or electrical failure.

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Zero Deductible

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Customer-Focused Support

Customer-Focused Support

Our claims process is simple & easy and our customer service team is happy to help.

Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for purchase Internationally or in U.S. Territories.

Kramer Electronics 903 4x1 Audio Amplifier/Switcher Specifications

  • Inputs

    1 unbalanced stereo audio 1Vpp/50kohm on a 3.5mm mini jack; 3 unbalanced stereo audio 1Vpp/50kohm on RCA connectors

  • Outputs

    Stereo headphone on a 6.5mm connector; loudspeakers on a terminal block connector; automatic switching when a headphone is plugged in

  • Output Power

    2x10W (4ohm)

  • Output Music Power

    2x40W (4ohm)

  • Bandwidth (-3db)

    20kHz

  • S/N Ratio

    77dB @1kHz

  • Crosstalk

    -73dB @1kHz, all hostile

  • Controls

    Input selector switches: bass (70Hz), mid (1kHz), treble (15kHz): +/-13dB; volume, balance and loudness controls

  • Coupling

    AC

  • Audio THD + Noise

    0.50%

  • Audio 2nd Harmonic

    0.30%

  • Power Source

    12V DC, up to 2.5A

  • Dimensions (W X D X H)

    19cm x 13.5cm x 2.5cm (7.5" x 5.3" x 0.98")

  • Weight

    0.6kg (1.32lbs) approx

  • UPC Code

    7291063027827

About Kramer Electronics 903 4x1 Audio Amplifier/Switcher

The Kramer Electronics 903 Personal Stereo Audio Amplifier 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 Electronics 903 provides you the ability to customize the output of your audio.

In addition, the Kramer Electronics 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 Electronics 903 includes a Loudness switch for automatic equalization in low-volume listening.

Kramer Electronics 903 4x1 Audio Amplifier/Switcher Features

  • 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
  • Connectivity: Input - 3x stereo on RCA connectors and 1x 3.5mm stereo mini-plug and Output - 1/4" headphone jack and terminal block for speakers
  • Compatibility: 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

Key Features

  • 20W Total Power
  • Easy setup/customization w volume/equalization controls
  • Just 12VDC but 20W of sound without overheating
  • Input: 3 unbalanced stereo RCA connectors
  • Input: 1 unbalanced stereo mini jack
  • Output: 1/4" headphone jack

What's in the box:

  • Kramer Electronics 903 4x1 Personal Stereo Audio Amplifier and Switcher
  • 12VDC Power Supply
  • Owner's Manual
  • Kramer Electronics Warranty