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Krell Chorus 7200XD Zoom

Krell Chorus 7200XD

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SKU: KrellChorus7200
Krell Chorus 7200XD original xd version $15000 retail
stock photo looks identical, mint

7 Channel Power Amplifier
200 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 dB

Signal-to-noise ratio
>95 dB, wideband, unweighted, referred to full power output
>115 dB, “A”-weighted

Gain 26.2 dB

Total harmonic distortion
<0.04% at 1 kHz, at 200 W, 8 Ω
<0.15% at 20 kHz, at 200 W, 8 Ω

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

Input sensitivity
Single-ended or balanced: 1.96 V RMS

Output power 200 W RMS at 8 Ω
360 W RMS at 4 Ω

Output voltage
113 V peak-to-peak
40 V RMS

Output current
13.4 A peak

Slew rate
40 V/μs

Output impedance
<0.038 W, 20 Hz to 20 kHz

Damping factor
>210, 20 Hz to 20 kHz, referred to 8 W

Power consumption
Standby: 1 W
Idle: 255 W
Maximum: 2800 W

Heat output< Standby: 3.4 BTU/hr.
Idle: 873 BTU/hr.
Maximum: 9590 BTU/hr.

7 single-ended via RCA connector
7 balanced via XLR connector

7 pairs binding posts

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

110 lbs., 50 kg (shipping)
100 lbs., 45.4 kg (unit only)

Availability: In stock

Product Description


    Krell Chorus 7200XD looks and sounds just like new retail $15000 Krell iBias Class A amplifiers are the first to deliver the rich musicality of Class A amplifiers, the uncompromised dynamics of classic Krell amplifiers, and the efficiency and low power consumption of Class G and H amplifiers. Circuitry Highlights Krell iBias Class A technology allows our latest amplifiers to run in full Class A mode to full power while minimizing heat generation. All signal gain is realized in the current domain using discrete, proprietary, multiple-output current mirrors with extraordinary open loop linearity. There are no generic integrated circuits or op amps used anywhere. Current mirrors in the final gain stages use a new output power device that operates at a 73% higher voltage, delivers almost 10% more current, and offers 120 watts of additional power handling capability as compared to previous devices. The signal path is fully complementary and balanced . Independent complementary pre driver and driver stages for the positive and negative output transistors make the output stages extremely fast and linear. Krell amplifiers are fully direct-coupled, with no capacitors in the audio signal path. This design gives the Krell amplifiers lower internal impedance, which allows firmer, more precise control of your speakers. Power Supply Highlights Four 750VA toroidal transformers feed amplifier modules that include the audio circuitry, rectifier, and power supply filtering mounted to an individual heat sink. This design shortens the electrical path from the power supply to the output transistors, reducing the overall impedance and allowing the circuit to respond faster and control the speakers better and more accurately. Feature Highlights Network connectivity brings convenience, monitoring, and reporting to end users from any smartphone, tablet, or laptop. Amplifier configuration options include display brightness and timeout. For energy conservation, the amplifiers can be programmed to power off at a preset time of inactivity. Individual channels can be muted and firmware updates can be initiated from the web server. Excessive current, output DC, fan speeds, short circuit, and overheating are all monitored in real time. Messages are displayed on the front panel and reported on the web server interface. Additionally. end users can be sent an email notifying them of any operational anomalies.
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