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Krell S-300i Integrated Amp Offers iPod Connectivity

S-300i combines a Class A preamplifier circuit, an amp section rated at 150 watts into an 8-ohm load and iPod connectivity.


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Krell Industries is offering consumers an all-in-one component that is stylish and affordable with its new S-300i Integrated Amplifier.

The S-300i (pdf) combines a fully balanced, Class A preamplifier circuit with a stereo amplifier rated at 150 watts per channel into 8 ohms and 300 watts per channel into 4 ohms.

Its circuit design is modeled after the company’s Current Mode technology used in Krell’s Evolution amps and preamps.       

The S-300i amplification section employs a massive 750 VA toroidal transformer and 38,000 microfarads of storage capacitance to help it handle any load a loudspeaker may present.

It also delivers an iPhone/iPod interface that is modeled after Krell’s KID iPod/iPhone dock. The iPod interface taps into the fully differential output included in iPods and iPhones.

Other features include:

  • A machined-aluminum volume control on the front that also accesses the control menus
  • The menu is displayed in the unit’s front-display window and offers info on balance, input trim, input naming, and muting level
  • Theater pass-through mode, which allows the S-300i to operate in conjunction with a surround-sound system
  • Back-panel provisions like three unbalanced RCA inputs, a balanced XLR input, a jack for the iPod/iPhone cable, WBT speaker cable terminals
  • A compact 4.2-inch chassis

Installers and systems integrators can also use the S-300i in tandem with AMX and Crestron control systems. The back panel’s control options include 3.5mm jacks for IR input, 12-volt trigger input and outputs and a RS-232 port.

Krell ships the integrated amp with dog ears for rack mounting, a cable for the connection of an iPod/iPhone and a solid-aluminum remote. 

MSRP: $2,500



  About the Author

Bob is an audio enthusiast who has written about consumer electronics for various publications within Massachusetts before joining the staff of CE Pro in 2000. Bob is THX Level I certified, and he's also taken classes from the Imaging Science Foundation (ISF) and Home Acoustics Alliance (HAA). In addition, he's studied guitar and music theory at Sarrin Music Studios in Wakefield, Mass. Have a suggestion or a topic you want to read more about? Email Robert at [email protected]

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