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STEREO AMPLIFIERS

Krell’s New XD Technology
Krell’s “XD” (Xtended Dynamics, Xtended Dimensionality, Xtended Detail) upgrade for the iBias amplifiers takes an already great sounding amplifier and raises its performance to the next level. “XD” is a classic example of Krell’s continuous R&D efforts reaping benefits across multiple product lines. During the development of the K-300i Integrated Amplifier we discovered substantial sonic improvements by lowering the output impedance below traditional norms. So we applied this technique to our existing line of amplifiers and the improvement was so substantial that it required a unique designation, hence, “XD.”

Krell
Krell
Krell
Duo 125 XD

$7500.00

Duo 175 XD

$10,200.00

Duo 300 XD

$13,300.00

KrellDUO 125 XD

$7,500.00

2 Channel Power Amplifier
125 Watt Amplifier Featuring Krell iBias Technology

Frequency response
20 Hz to 20 kHz +0, -0.08 dB
0.5 Hz to 100 kHz +0, -3 dBSignal-to-noise ratio
>95 dB, wideband, unweighted, referred to full power output
>112 dB, “A”-weightedGain
25.8 dB

Total harmonic distortion
<0.03% at 1 kHz, at 125 W, 8 Ω
<0.17% at 20 kHz, at 125 W, 8 Ω

Input Impedance
Single-ended: 100 kΩ
Balanced: 200 kΩ

Input sensitivity
Single-ended or balanced: 1.63 V RMS

Output power
125 W RMS at 8 Ω
250 W RMS at 4 Ω

Output voltage
89.4 V peak-to-peak
31.6 V RMS

Output current
18 A peak

Slew rate
40 V/μsOutput impedance
<0.015Ω, 20 Hz to 20 kHzDamping factor
>530, 20 Hz to 20 kHz, referred to 8 Ω

Power consumption
Standby: 1 W
Idle: 58 W
Maximum: 1350 W

Heat output
Standby: 3.42 BTU/hr.
Idle: 198 BTU/hr.
Maximum: 4617 BTU/hr.

Inputs
2 single-ended via RCA connector
2 balanced via XLR connector

Outputs
2 pairs binding posts

Dimensions
17.1 in. W x 7.65 in. H x 21.10in. D
434 mm W x 194 mm H x 536mm D

Weight
60 lbs., 27.3 kg (shipping)
50 lbs., 22.7 kg (unit only)

KrellDUO 175 XD

$10,200.00

2 Channel Power Amplifier
175 Watt Amplifier Featuring Krell iBias Technology

Frequency response
20 Hz to 20 kHz +0, -0.08 dB
0.5 Hz to 100 kHz +0, -3 dBSignal-to-noise ratio
>95 dB, wideband, unweighted, referred to full power output
>112 dB, “A”-weightedGain
25.8 dB

Total harmonic distortion
<0.03% at 1 kHz, at 125 W, 8 Ω
<0.17% at 20 kHz, at 125 W, 8 Ω

Input Impedance
Single-ended: 100 kΩ
Balanced: 200 kΩ

Input sensitivity
Single-ended or balanced: 1.63 V RMS

Output power
125 W RMS at 8 Ω
250 W RMS at 4 Ω

Output voltage
89.4 V peak-to-peak
31.6 V RMS

Output current
18 A peak

Slew rate
40 V/μsOutput impedance
<0.015Ω, 20 Hz to 20 kHzDamping factor
>530, 20 Hz to 20 kHz, referred to 8 Ω

Power consumption
Standby: 1 W
Idle: 58 W
Maximum: 1350 W

Heat output
Standby: 3.42 BTU/hr.
Idle: 198 BTU/hr.
Maximum: 4617 BTU/hr.

Inputs
2 single-ended via RCA connector
2 balanced via XLR connector

Outputs
2 pairs binding posts

Dimensions
17.1 in. W x 7.65 in. H x 21.10in. D
434 mm W x 194 mm H x 536mm D

Weight
60 lbs., 27.3 kg (shipping)
50 lbs., 22.7 kg (unit only)

KrellDUO 300 XD

$13,300.00

2 Channel Power Amplifier
300 Watt Amplifier Featuring Krell iBias Technology

Frequency response
20 Hz to 20 kHz +0, -0.13 dB
0.5 Hz to 100 kHz +0, -3 dBSignal-to-noise ratio
>98 dB, wideband, unweighted, referred to full power output
>116 dB, “A”-weightedGain
26.2 dB

Total harmonic distortion
<0.045% at 1 kHz, at 400 W, 8 Ω
<0.17% at 20 kHz, at 400 W, 8 Ω

Input Impedance
Single-ended: 100 kΩ
Balanced: 200 kΩ

Input sensitivity
Single-ended or balanced: 2.4 V RMS

Output power
300 W RMS at 8 Ω
540 W RMS at 4 Ω

Output voltage
138 V peak-to-peak
49 V RMS

Output current
16 A peak

Slew rate
40 V/μsOutput impedance
<0.007Ω, 20 Hz to 20 kHzDamping factor
>1140, 20 Hz to 20 kHz, referred to 8 Ω

Power consumption
Standby: 4 W
Idle: 180 W
Maximum: 1600 W

Heat output
Standby: 13.7 BTU/hr.
Idle: 615 BTU/hr.
Maximum: 5677 BTU/hr.

Inputs
2 single-ended via RCA connector
2 balanced via XLR connector

Outputs
2 pairs binding posts

Dimensions
17.1 in. W x 7.65 in. H x 21.10in. D
434 mm W x 194 mm H x 536mm D

Weight
80 lbs., 3.64 kg (shipping)
70 lbs., 31.8 kg (unit only)