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Krell K300i Integrated Amplifier With IBias - Silver

PRICE:
Regular price $6,499.00 USD
Regular price $9,075.00 USD Sale price $6,499.00 USD
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CONDITION: Used

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Just in on trade! Very good condition.  One tiny nick on left side of front face plate.  Includes original factory packaging, power cord, printed manual.
Krell Audio's K-300i integrated amp incorporates a newly developed amplifier circuit design with Krell iBias™ technology that delivers 150 Watts/Channel into 8Ω and 300 Watts/Channel into 4Ω. iBias provides the sonic benefits of Class A operation without the excessive heat and power consumption of traditional Class A designs.
A 771VA transformer with 80,000μF of capacitance forms a potent power supply for excellent signal control and dynamics. Krell Current Mode topology is employed with fully differential circuitry that runs from the input stage through to the last output gain stage providing an extremely linear and extended frequency response curve with smooth, effortless highs and extremely dynamic bass energy.
"Sonic Excellence And Balance"
I'm hardly the final authority on integrated amplifiers, having reviewed exactly four," reports Jason Victor Serinus in his Stereophile for November 29, 2019. "But of all of them, the one whose sound stands out most in my mind is the Krell K-300i. It has the smoothest, most listenable, and most all-of-one-piece sonics of the lot; it isn't a supreme challenge to move around; and it offers an optional DAC that is surprisingly musical and satisfying for the price."
"On balance, this is one of the best sounding pieces of Krell gear I’ve had the pleasure to use," notes Gregory Petan in TONEaudio. "While the last bit of resolution and slam from their top products is not here, because you can’t have everything for [this price], Krell has made it a point to deliver a high degree of sonic excellence and balance in this compact package. Those needing more power can consider using the K-300i as a control center and adding a more massive Krell power amplifier later."
"The current integrated may be the cheapest amplifier the company currently makes but it still delivers a concentrated dose of the fabled Krell sound. Add the forward-looking feature set and you have something of a high-end bargain," says England's What Hi-fi? magazine, September 6, 2019.
Packed With Krell's Musical Sounding Technologies
Packed with many of Krell's most musical-sounding technologies, the elegant chassis of the K-300i is living-room-friendly. Yet it has enough power to achieve incredible, lifelike dynamics with any speaker.
The convenient front-panel menu system provides configuration features such as input trim. Theater Bypass mode lets the K-300i serve as the core of a surround-sound system without sacrificing two-channel sound quality. Analog Inputs include three stereo RCA and two stereo balanced XLR. High-quality gold-plated speaker cable terminals provide a secure, electrically ideal connection.
Custom Installation Features And Web Interface
The K-300i also offers features that make it perfect for custom installation, such as RS-232 and Ethernet ports for control and status feedback, 3.5mm jacks for IR input, and 12-volt trigger input and output. Additionally, the unit has an internal web server that is optimized for tablets and provides a remote graphical user interface for convenient and intuitive control accessed through its Ethernet connection.

Product Features

Overview
  • Integrated amplifier with Krell iBias™ technology
  • 150 Watts/Channel into 8Ω and 300 Watts/Channel into 4Ω
  • 771VA transformer with 80,000μF of capacitance
  • Fully differential circuitry that runs from the input stage through to the last output gain stage
  • Front-panel menu system
  • Theater Bypass mode
  • RS-232 and Ethernet ports for control and status feedback
  • Internal web server that is optimized for tablets and provides a remote graphical user interface
Analog Inputs
  • 2 pr. balanced via XLR connectors
  • 3 pr. single-ended via RCA connectors
Outputs
  • 1 pr. preamp outputs via RCA connectors
  • 1 pr. speaker outputs via gold-plated binding posts
Control Inputs
  • RS-232 input via 9-pin D-subminiature connector
  • Remote IR detector input via 3-conductor 3.5 mm connector
  • 12 VDC trigger input via 2-conductor 3.5 mm connector
Control Output
  • 12 VDC trigger output (60 mA maximum current) via 2-conductor 3.5 mm connector

Product Specs

Input impedance
  • Balanced: 16 kΩ
  • Single-ended: 8 kΩ
Frequency Response
  • 20 Hz to 20 kHz +0, -0.22 dB
  • <10Hz to 100kHz +0, -0.57 dB
Signal-to-noise ratio
  • 104 dB, wideband, unweighted, at 2V RMS in balanced, referred to full power output
  • 117 dB, “A”-weighted
Gain
  • 25 dB, referenced to 2V RMS in balanced and full power output
Input Overload
  • 10.4 V RMS Balanced
  • 6.8 V RMS Single-ended
Total Harmonic Distortion
  • <0.015%, 1 kHz, 150 W, 8 Ω load
  • <0.08%, 20 kHz, 150 W, 8 Ω load
Output Power
  • 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
Slew Rate
  • 46 V/µs
Output impedance
  • <0.023 Ω, 20 Hz
  • <0.035 Ω, 20 Hz to 20 kHz
Damping Factor
  • 347, 20 Hz, referred to 8 Ω
  • 228, 20 Hz to 20 kHz, referred to 8 Ω
Power Consumption
  • Standby: 11 W
  • Idle: 46 W
  • Maximum: 900 W
Heat Output
  • Standby: 37 BTU/hr
  • Idle: 156 BTU/hr
  • Maximum: 3060 BTU/hr
Dimensions
  • 17.25 in W x 4.12 in H x 18.00 in D
  • 438 mm W x 105 mm H x 457 mm D