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BAT VK-255SE Stereo Power Amplifier

75 Pounds of American Muscle: BAT VK-255SE Power Amplifier Features Warmth and Texture of Finest Vacuum-Tube Designs, Dynamics and Extension of Best Solid-State Amps

Sublime Power: Balanced Audio Technology VK-255SE Stereo Power Amplifier Delivers a Robust 300Wpc, Provides Grain-Free Musical Reproduction 

The impressive execution of a brilliant design is often worth owning. In the case of the BAT VK-255SE stereo power amplifier, following such guidelines may very well may translate into the last amp you ever purchase—ending a lifelong quest for the perfect combination of brute-force macrodynamics and intricate microdynamics. Offering 150Wpc into 8 ohms (300Wpc into 4), the VK-255SE delivers the warmth and texture of the finest vacuum-tube designs and dynamic capability of frequency extension of the best solid-state models. You’ll experience the sublime reproduction of music no matter the source employed.

Warmth of Tubes, Dynamics of Solid-State
The VK-255SE power amplifier represents Balanced Audio Technology’s hallmark out-of-the box approach to audio circuit design. Unlike most solid-state amplifiers that feature four or more gain stages in a high-feedback push-pull configuration, the VK-255SE features only two gain blocks in a high-power, zero feedback, and purely symmetrical design. Available as either a stereo or monoblock unit, the VK-255SE has the warmth and texture typically associated with the finest vacuum-tube designs combined with the dynamic capability of the best solid-state offerings.

A Robust 300Wpc, Plus Supreme Audio Symmetry
The VK-255SE’s elegant signal path follows Balanced Audio Technology’s purist approach of using zero negative feedback to achieve the design goals of wide bandwidth and circuit linearity. The whole amplifier circuit consists of just two gain blocks and is based entirely on N-Channel MOSFET devices. Assuring ultimate symmetry of the resulting signal, both sides of the waveform are handled by identical devices in identical circuit configuration. The VK-255SE offers a robust 300 watts per channel into a four-ohm load; the monoblock version doubles the current delivery of the stereo edition.

Revised Power Supply Equals Enhanced Musical Refinement
To complement the inherent simplicity of the VK-255SE’s fully balanced design, only the highest-grade parts are used throughout. The revised power supply incorporates the same second-generation oil-filled capacitors used in Balanced Audio Technology’s new REX II Preamplifier. They increase the high-quality filtering capacity, dramatically lower the noise floor, and present a grain-free, more refined portrayal of musical harmonics. Coupling speed and grace with an exquisite fidelity to the timbre and texture of instruments and voices, the VK-255SE markedly closes the performance gap between vacuum tube and solid-state amplification. It will serve as the anchor of any world-class system.

  • Only two gain stages
  • Fully differential design – input to output
  • Wide bandwidth: 2Hz to 240kHz
  • High Slew Rate: 200V/uS
  • Only N-Channel MOSFET devices used throughout
  • Zero Global Feedback
  • High-Current driver stage
  • Isolated power supplies for driver and output stage
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Output Power:
    150 Watts/Channel @ 8Ohms
    300Watts/Channel @ 4Ohms (<0.2% THD)
Frequency Response: 2Hz to 240kHz
Input Impedance: 100kΩ
Gain: 26dB
Dimensions HWD: 6.5" x 19" x 16”
Weight: 75lbs.
Power consumption: 225W At Idle, 1400W At Full Power

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