Krell Industries K-300i Owner's Reference Manual
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Krell Industries K-300i Owner's Reference Manual

Integrated amplifier
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K-300i Integrated Amplifier
Owner's Reference
Table of Contents
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Frequently Asked Questions (7)

  • How do I connect speakers to the Krell K-300i?

    Speakers are connected to the Loudspeaker Outputs on the rear panel of the K-300i. These binding posts accept 5/16" (8.0mm) spade connectors, bare wire, or banana plugs.

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  • What are the power output specifications of the Krell K-300i amplifier?

    The Krell K-300i amplifier provides an output power of 150 W RMS per channel at 8 Ω and 300 W RMS per channel at 4 Ω.


    For more information, see page 15 of the manual.
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  • What types of audio inputs are available on the Krell K-300i?

    The Krell K-300i offers several types of audio inputs:

    • Balanced Analog Audio Inputs via XLR jacks.
    • Single-Ended Analog Audio Inputs via RCA jacks.
    • USB-B Connector for streaming digital audio from a computer.
    • Bluetooth Receiver for wireless audio.
    • HDMI Connections (two inputs) which support 2-channel PCM audio and 2-channel DSD128 audio.
    • Toslink Optical Digital Audio Input for PCM audio data up to 96kHz/24-bits.
    • S/PDIF Digital Audio Input for PCM audio data up to 192kHz/24-bits.
    • USB-A Connector for connecting a USB flash memory stick containing digital music files.

    For more information, see pages 5, 6 and 7 of the manual.
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  • Does the Krell K-300i have built-in streaming capabilities?

    Yes, the K-300i with the optional digital module supports network streaming audio and playback from a USB memory stick using the mconnect Control app. It is also DLNA/UPnP compliant and supports various streaming services such as Spotify, Tidal, Roon Ready, Qobuz, and Deezer.


    For more information, see page 13 of the manual.
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  • What are the physical dimensions and weight of the Krell K-300i?

    The Krell K-300i has dimensions of 17.25 inches W x 4.12 inches H x 18.00 inches D (438 mm W x 105 mm H x 457 mm D). The unit's weight is 52 lb [23.6 kg] and the shipping weight is 60 lb [27.3 kg].


    For more information, see page 16 of the manual.
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  • How do I update the firmware on the Krell K-300i?

    To update the firmware, the K-300i must be connected to a network with Internet access. You can then navigate to the Software Update option in the menu and press Enter to start the process. The unit will check for updates on the Krell server, download and install them if available, and then return to stand-by mode once complete.


    For more information, see page 11 of the manual.
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  • Can the Krell K-300i be used as a preamplifier with an external power amplifier?

    Yes, the Krell K-300i can be used as a preamplifier with an external power amplifier by connecting the external amplifier to the Preamp Output RCA jacks. You can also adjust the Preamp Output Level Trim to compensate for gain differences and set the Output Mode to Variable or Fixed.

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Summary of Contents for Krell Industries K-300i

  • Page 1 K-300i Integrated Amplifier Owner’s Reference...

  • Page 2: Table Of Contents

    Front Panel Menu __________________________________________________________________________ (9) Control Options ___________________________________________________________________________ (12) K-300i with Digital Module ________________________________________________________________ (13) Specifications _____________________________________________________________________________ (15) Warranty __________________________________________________________________________________ (17) Service ____________________________________________________________________________________ (18) Krell Contact Information _________________________________________________________________ (18) © 2018 by Krell Industries LLC. All rights reserved. Page 2 of 18...

  • Page 3: Getting Started

    WARNING: Do not place the component where it could be exposed to dirt or excessive moisture. The ventilation grids on the top and bottom of the K-300i must be unobstructed at all times. Do not place flammable material on top of or beneath the unit. When making connections to this or any other model, make sure all components are off.

  • Page 4: Unpacking / Placement / Ac Power Guidelines

    The bottom of the K-300i must be unobstructed to the height of the feet to ensure proper ventilation. Do not place the K-300i on a carpeted floor. Allow a minimum of 2 inches (5cm) above the unit for proper ventilation, and at least one inch (2.54 cm) on each side.

  • Page 5: Front Panel

    13) S/PDIF Digital Audio Input 22) 12VDC Trigger Input 14) RJ45 Ethernet Connection 23) 12VDC Trigger Output AC Mains Input and Power Switch 16) Loudspeaker Outputs Preamp Output © 2018 by Krell Industries LLC. All rights reserved. Page 5 of 18...
  • Page 6 96kHz/24-bits. 13) S/PDIF Digital Audio Input For connection to the digital audio output of a source device. This connection carries PCM audio data up to 192kHz/24-bits. © 2018 by Krell Industries LLC. All rights reserved. Page 6 of 18...
  • Page 7 For connection to a home control system or other component with a 12VDC trigger output to switch the K-300i on (+12V) or off (0V). This input accepts a 3.5mm mono plug where the tip is hot and the sleeve is ground.

  • Page 8: Remote Control

    Remote Control Buttons have the same function as the front panel controls, when applicable. Power Use this button to switch the K-300i between stand-by and operational modes. Mute Button Use this to mute the output. To un-mute, press the mute button again.

  • Page 9: Operation

    Volume keys on the remote. 4. To turn off the K-300i press the Power button on the front panel or the power key on the remote. The unit will go into stand-by and, “---“, will appear on the display.
  • Page 10 Level Trim – In this menu you can add a volume offset to the preamp output to compensate for gain differences between an external amplifier or subwoofer and the internal amplifier of the K-300i. The adjustment range is +/- 10dB.
  • Page 11 IP address. Pressing the Up or Down buttons will scroll between DHCP and Static IP. While on DHCP, if you press the Enter Button the K-300i will refresh the IP address. In Static IP mode you can edit the IP address manually. All of the other network parameters (Subnet Mask, Default Gateway, and DNS Server) are only applicable to the Static IP mode.

  • Page 12: Control Options

    K-300i. RS-232 A home control system can use the RS-232 port on the rear panel of the K-300i to control the unit and receive status information. Please refer to the document in the link below for the connection information and protocol.

  • Page 13: K-300I With Digital Module

    The K-300i supports the latest streaming services. Note: The K-300i is DLNA/UPnP compliant so any DLNA music player app should be able to use it as a playback end point. However, proprietary control functions, such as volume control of the K-300i are only available when using the mconnect Control app.
  • Page 14 You’ll need Spotify Premium to use Connect – see details overleaf. 1) Fire up the Spotify app on your phone, tablet or PC using the same network as the K-300i. 2) Play a song on Spotify and hit ‘DEVICES AVAILABLE’.

  • Page 15: Specifications

    150 W RMS per channel at 8 Ω 300 W RMS per channel at 4 Ω Output voltage 98 V peak to peak 34.6 V RMS Output current 13 A peak © 2018 by Krell Industries LLC. All rights reserved. Page 15 of 18...
  • Page 16 438 mm W x 105 mm H x 457 mm D Weight Unit only: 52 lb [23.6 kg] As shipped: 60 lb [27.3 kg] Specifications subject to change without notice. © 2018 by Krell Industries LLC. All rights reserved. Page 16 of 18...

  • Page 17: Warranty

    All operational features, functions, and specifications and policies are subject to change. © 2018 by Krell Industries LLC. All rights reserved. Page 17 of 18...

  • Page 18: Service

    To purchase additional packaging, please contact your authorized Krell dealer, distributor, or the Krell Service Department for assistance. To Contact the Krell Service Department: Telephone: 203-298-4020 Monday-Friday, 8:30am to 5:00pm EST Fax 203-799-9796 E-Mail: service@krellonline.com http://www.krellonline.com © 2018 by Krell Industries LLC. All rights reserved. Page 18 of 18...

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