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Krell Audio’s K-300iD 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.
The K-300iD also includes Krell’s digital option installed for DAC functionality, digital music streaming, and much more.
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.
Analog Inputs
2 pr. balanced via XLR connectors
3 pr. single-ended via RCA connectors
Digital Inputs (only on K300D Digital model)
1 EIAJ Toslink Optical
1 S/PDIF Coax
2 HDMI (HDMI 2.0a, HDCP 2.2) + 1 HDMI Output
1 USB-A (USB 2.0 host)
1 USB-B (USB 2.0 audio device)
1 Bluetooth with aptX
Outputs
1 pr. preamp outputs via RCA connectors
1 pr. speaker outputs via gold-plated binding posts
Control inputs
1 RS-232 input via 9-pin D-subminiature connector
1 remote IR detector input via 3-conductor 3.5 mm connector
1 12 VDC trigger input via 2-conductor 3.5 mm connector
Control output
1 12 VDC trigger output (60 mA maximum current) via 2-conductor 3.5 mm connector
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
438W x 105H x 457D mm
Weight
As shipped: 27.3 kg
Digital Module Specs
Coaxial and HDMI inputs support PCM up to 24-bit/192kHz. Optical input up to 24-bit/96kHz
HDMI inputs support DSD and 4K video content. HDMI output supports Audio Return Channel (ARC)
USB and Network streaming support MP3, AAC, WMA, WAV(PCM), FLAC, ALAC up to 192kHz
Bluetooth streaming supports A2DP, AVRCP, HFP,
The K-300i has an internal web server that is optimised for tablets and provides a remote graphical user interface for convenient and intuitive control.
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