KrellPhantomusedKrell Phantom  ( 2 box Preamplifier )Krell Phantom Reference 2 box Preamplifier Serial # 24611100024 This Preamplifier is in mint condition. My customer just traded this system in for some serious upgrades. We are located in South...8995.00

Krell Phantom ( 2 box Preamplifier )

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smer319 

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Sunny Components Inc  Verified Dealer

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Condition
9/10
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Ships fromCovina, CA, 91724
Ships toUnited States
Package dimensions?" × ?" × ?" (70.0 lbs.)
Shipping carrierunspecified
Shipping costSpecified after purchase
Original accessoriesBox, Manual
AverageResearch Pricing

Krell Phantom Reference 2 box Preamplifier  Serial # 24611100024
This Preamplifier is in mint condition.  My customer just traded this system in for some serious upgrades.
We are located in Southern California and are able to offer complete installation services and other matching speakers like Wilson Audio, Vienna Acoustics, Dynaudio and more.

Phantom

Stereo Preamplifier

With the Phantom Preamplifier, musicians appear silhouetted by the air about them, filling the room with a mesmerizing depiction of the recording. Music emanates from an expanse that outlines the recording venue, transporting you to the moment of creation. Coupling advanced technologies and inspired design, the Phantom preamplifier elevates preamplifier performance to an art form.

 

The Phantom preamplifier is the first Krell preamplifier to include an optional crossover. The crossover functionality offers the ability to use a subwoofer/satellite speaker arrangement and still maintain the highest quality sonic performance. Previous to the Phantom preamplifier, this system configuration would require signals to pass through a subwoofer’s lower quality crossover circuitry. The Phantom preamplifier is the centerpiece of a world class audio system where space is at a premium.

Crossover Highlights

 

Owing to Krell’s work in the Modulari Duo Reference loudspeaker, the unique crossover feature is a highly sophisticated option. When the optional board is present, additional crossover menu items become available. Definable parameters include independently assignable crossover frequencies and filter types for the high and low pass sections. Choices include 40Hz, 55Hz, 75Hz, and 100Hz crossover points with 12dB, 24dB, and 48dB Butterworth or 24dB Linkwitz-Riley style filters. The high pass section of the crossover uses the full Phantom preamplifier circuitry for its output stage.

 

Circuitry Highlights

 

The Phantom preamplifier is a dual monaural circuit design with the left and right channels afforded their own power supply regulation and individual full chassis sized boards. All signal gain is realized in surface mount topology using proprietary multiple-output current mirrors with nearly 500 times the open loop linearity of other designs 1.5 MHz open loop bandwidth in a zero feedback, balanced, Krell Current Mode design terminating in Krell CAST. A complete Krell system (source, preamp, and amplifier) system, connected using CAST interconnects reduces the number of voltage gain stages to the minimum, one. The resulting noise floor approaches the theoretical limit of technology. Negative feedback is not used anywhere in the preamp, nor is it necessary. Open-loop distortion is typically less than 0.003%. The volume control is realized with a balanced resistor ladder - bandwidth and transient response of the preamp circuitry are virtually unaffected by the volume setting.

 

Power Supply Highlights

 

The Phantom audio circuits receive power from a Krell Current Mode analog power supply housed in its own dedicated chassis. The power supply avoids the common integrated circuit topology used in many preamplifiers and instead mimics the design topology of Krell Evolution e Series amplifiers. The circuitry is completely discrete giving it the ability to respond quickly to current demands and also be unaffected by all but the most severe AC voltage power fluctuations. Oversized for a preamplifier, the power supply features a 290 VA transformer and 41,600μF of capacitance. Locating the power supply in its own chassis presents the ideal configuration for isolating stray electrical and magnetic interference from the critical preamplifier signal path. Capable of delivering current and voltage swing for any musical event, the Phantom power supply is gentle on AC requirements when not in use. A new eco-friendly design reduces standby power draw to 2W.

 

The Phantom preamplifier is offered in diamond-cut silver finish.

Specifications

Phantom

Inputs

2 pr. CAST via 4-pin bayonet connectors

2 pr. balanced via XLR connectors

3 pr. single-ended via RCA connectors

 

Tape Input

1 pr. single-ended via RCA connector

 

Main Outputs

2 pr. CAST via 4-pin bayonet connectors

1 pr. balanced via XLR connector

1 pr. single-ended via RCA connector

 

Tape Outputs

1 pr. single-ended via RCA connector, buffered

 

Control Inputs

1 RS-232 input via a 9-pin D-subminiature connector

1 remote IR detector input via a 3-conductor 3.5 mm connector

1 12 VDC trigger input via 3.5 mm connector

1 preamplifier link via an RJ-45 connector

 

Control Outputs

2 individually programmable 12 VDC

trigger outputs via 3.5 mm connectors

1 preamplifier link via an RJ-45 connector

 

Power Output

1 phono power output (+/-20 VDC) for KPE

via a 9-pin D-subminiature connector

Input Impedance

CAST: 25 Ohms

Balanced: 40 k Ohms

Single-ended: 20 k Ohms

 

Output Impedance

CAST: >1 M Ohms

Balanced: 250 Ohms

Single-ended: 125 Ohms

 

Gain

12 dB (CAST or balanced output)

6 dB (single-ended output)

 

Volume Control

Balanced, current-mode,

16-bit, discrete R-2R ladder

 

Input Overload

CAST: 12 mA RMS

Balanced: 10 V RMS

Single-ended: 6.5 V RMS

 

Output Overload

CAST: 16 mA RMS

Balanced: 16 V RMS

Single-ended: 8 V RMS

 

Frequency Response

20 Hz to 20 kHz +/- 0.02 dB

0.35 Hz to 720 kHz +0, -3 dB

 

Total Harmonic Distortion Plus Noise

Balanced Output:

<0.003%, 20 Hz to 20 kHz, 4 V RMS or 4 mA RMS

Signal to Noise Ratio

4 V RMS balanced or 4 mA RMS CAST output

Wideband, unweighted: >100 dB

"A" weighted: >109 dB

 

Transformers

290 VA (250 VA Analog / 40 VA Digital)

 

Capacitors

71,900 μF (41600 μF Analog / 30,300 μF Digital)

 

Power Consumption

Standby: 2 W

Power on: 65 W

Power on, with KPE: 75 W

 

Dimensions

Preamplifier only:

17.3 in.W x 3.8 in. H x 18.3 in. D

43.8 cm W x 9.7 cm H x 46.4 cm D

Power supply only:

17.3 in. W x 3.8 in. H x 17.7 in. D

43.8 cm W x 9.7 cm H x 44.8 cm D

Preamplifier and power supply:

17.3 in. W x 7.6 in. H x 18.3 in. D

43.8 cm W x 19.2 cm H x 46.4 cm D

 

Weight

Shipped: 61 lbs., 27.6 kg

Preamplifier only: 18 lbs., 8.1 kg

Power supply only: 28 lbs., 12.7 kg

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