KRELL DUO-300XD 300w Stereo Power amp class-A w/ iBias technology
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A comment on the new Krell sound from our XD upgraded amplifiers…Initially, there’s no comparison between the two models (pre and post XD upgrade) – the jump in resolution and musicality is massive. It’s like they are channeling the sound that made Krell famous, while incorporating the changes in technology that have come to be over the last 35 years
When developing the DUO300-XD, David Goodman, our Director of Product Development, whom has been with Krell since 1987 and was largely responsible for design work on all Krell products, discovered that with modifications to the output stage, we could vastly improve sound quality, across the board, to all of our amplifiers.
A deeper, darker, blacker background that provided significantly better macro and micro dynamics, more silence between the notes. Vocals and midrange took on an organic, yet more vibrant tone, enabling us to hear much more body, and even though our amps were great before, there was a very significant improvement.
The speakers disappeared; yet, instruments were more focused with appropriate size and specific soundstage locations. All in all, a much better sounding, much improved experience that was easily, immediately heard by all that listened.
Features & Specifications
300 Watt Amplifier Featuring Krell iBias Technology
20 Hz to 20 kHz +0, -0.13 dB
0.5 Hz to 100 kHz +0, -3 dB
>98 dB, wideband, unweighted, referred to full power output
>116 dB, “A”-weighted
Total harmonic distortion
<0.045% at 1 kHz, at 400 W, 8 Ω
<0.17% at 20 kHz, at 400 W, 8 Ω
Single-ended: 100 kΩ
Balanced: 200 kΩ
Single-ended or balanced: 2.4 V RMS
300 W RMS at 8 Ω
540 W RMS at 4 Ω
138 V peak-to-peak
49 V RMS
16 A peak
<0.017 , 20 Hz to 20 kHz Damping factor >470, 20 Hz to 20 kHz, referred to 8 Ω
Standby: 4 W
Idle: 180 W
Maximum: 1600 W
Standby: 13.7 BTU/hr.
Idle: 615 BTU/hr.
Maximum: 5677 BTU/hr.
2 single-ended via RCA connector
2 balanced via XLR connector
2 pairs binding posts
17.1 in. W x 7.65 in. H x 21.10in. D
434 mm W x 194 mm H x 536mm D
80 lbs., 3.64 kg (shipping)
70 lbs., 31.8 kg (unit only)
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