KRELL Vanguard

Vanguard
Integrated Stereo Amplifier 
 

The Vanguard incorporates a 200-watt-per channel amplifier and a Class A preamplifier, enclosed in a chassis that borrows its design and construction from the new Krell Foundation preamp/processor, Connect stream player, Illusion preamp and iBias amplifiers. An optional, field-installable digital module with USB, HDMI, coaxial, and optical inputs as well as Ethernet audio and Bluetooth streaming will also be available.

The Vanguard’s amplifier incorporates a massive power supply with a 750 VA toroidal transformer and 80,000 microfarads of storage capacitance. The tremendous amount of energy on tap provides 200 watts per channel into 8 ohms and 400 watts into 4 ohms. Two quiet, thermostatically controlled fans permit the use of a surprisingly compact chassis.

 

The preamplifier section of the Vanguard borrows its balanced, fully discrete Class A circuit concepts from Krell’s top-of-the-line Illusion preamplifiers. Krell’s Current Mode technology is employed to assure unequaled signal bandwidth, easily enough to handle the latest high-resolution PCM and DSD audio sources without impacting high-frequency response and detail.

 

Packed with many of Krell’s most musical-sounding technologies, the elegant chassis is living-room-friendly. Yet it has enough power to achieve incredible, lifelike dynamics with any speaker.

 

The front-panel menu system provides configuration features such as input naming and input trim. Theater Throughput mode lets the Vanguard serve as the core of a surround-sound system without sacrificing two-channel sound quality. Analog Inputs include three stereo RCA and one stereo balanced XLR. High-quality WBT speaker cable terminals provide a secure, electrically ideal connection.

 

The Vanguard also offers features that make it perfect for custom installation, such as 3.5mm jacks for IR input and 12-volt trigger input and output, as well as optional rack-mount ears. Additionally, the unit can be controlled with home automation systems through its Ethernet connection.

 

A key option for the Vanguard is the digital module, which can be added at the factory or by a dealer. The digital module includes USB, HDMI inputs and output, coax and optical digital inputs; Ethernet music streaming controlled through dedicated iOS and Android apps; and Bluetooth wireless for convenient streaming from phones, tablets and computers.

 

The Vanguard also offers features that make it perfect for custom installation, such as 3.5mm jacks for IR input and 12-volt trigger input and output, as well as optional rack-mount ears. Additionally, the unit can be controlled with home automation systems or the Krell web server through its Ethernet connection.

 

Vanguard Specifications

Inputs  1 pr. balanced via XLR connectors  3 pr. single-ended via RCA connectors   Outputs  1 pr. speaker outputs via WBT gold-plated binding posts   Control inputs  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 programmable 12 VDC trigger output (300 mA maximum current) via 2-conductor 3.5 mm connector   Input impedance  Balanced: 95 kΩ  Single-ended: 47.5 kΩ   Frequency response  20 Hz to 20 kHz +0, –0.01 dB  <2 Hz to 150 kHz +0, –3 dB   Signal-to-noise ratio  >90 dB, wideband, unweighted, at maximum gain, referred to full power output  >97 dB, “A”-weighted   Gain  48 dB   Input sensitivity  Single-ended or balanced: 160 mV RMS   Total harmonic distortion  <0.015% at 1 kHz, at 200 W, 8 Ω load  <0.13% at 20 kHz, at 200 W, 8 Ω load   Output power  200 W RMS per channel at 8 Ω  400 W RMS per channel at 4 Ω   Output voltage  113 V peak to peak  40 V RMS   Output current  16 A peak   Slew rate  50 V/μs   Output impedance  <0.066 Ω at 20 Hz  <0.075 Ω, 20 Hz to 20 kHz   Damping factor  >121 at 20 Hz, referred to 8 Ω  >106, 20 Hz to 20 kHz, referred to 8 Ω   Power consumption Standby: 12 W  Idle: 70 W  Maximum: 1300 W   Heat output  Standby: 41 BTU/hr  Idle: 239 BTU/hr  Maximum: 4436 BTU/hr   Dimensions  17.1 in W x 4.15 in H x 17.5 in D  434 mm W x 105 mm H x 445 mm D   Weight  Unit only: 39 lb [17.7 kg]  As shipped: 47 lb [21.3 kg]   Digital Module Specs  Coaxial and HDMI inputs support PCM up to 24-bit/192kHz. optical input up to 24-bit/96kHz   USB and Network streaming support MP3, AAC, WMA, WAV(PCM), FLAC, ALAC up to 192kHz   Bluetooth streaming supports A2DP, AVRCP, HFP, HSP

Write a review

Your Name:


Your Review: Note: HTML is not translated!

Rating: Bad           Good

Enter the code in the box below: