BAT VK23SE Preamplifier & BAT VK225SE Power Amplifier Combination – Ex-Demonstration

Condition: Very good.

Includes: Original box, packing and accessories.

Finish: Silver.

Note: Sold as pre/power combination pair.

Overview

BAT VK-23SE Preamplifier

Fully balanced, VK-23SE is optimized by transformer-coupled outputs that prove superior to any capacitor-coupled design. Electrically, they significantly elevate VK-23SE’s ability to drive low-impedance loads. Sonically, they provide improvements in every area of musical reproduction.

Touting circuitry based on N-Channel MOSFET devices, VK-23SE features perfect audio uniformity. In this cutting-edge component, identical mechanisms—in identical circuit configuration— handle both sides of the waveform and ensure ultimate symmetry of the resulting signal.

State-of-the-art technology—including a programmable user interface and 140-step shunt volume control—taken from BAT’s top-of-theline devices complement the tube character, engrossing transparency, and bell-like purity that make VK-23SE a unique high-end value.

• Number of Channels 2
• Input Impedance 100 kΩ minimum each phase
• Output Per Channel (8Ω/4Ω) 150W / 300W
• Frequency Response 2Hz to 100kHz
• Inputs 2x XLR + 3x RCA Main Outputs 1x XLR + 1x RCA
• Preamplifier Outputs 1x XLR balanced output
• Maximum Gain 20dB
• Volume Control Resolution 0.5db
• Power Consumption 50VA
• Volume Control Steps 140
• Dimensions 19” x 5.75” x 15.5”
• Absolute Polarity Switchable
• Weight 30 lb.
• Noise -96dB unweighted
• Maximum Output Signal 12V
• Distortion at 2V Output 0.02%

BAT VK-225 SE Power Amplifier

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 second-generation oil-filled capacitors. 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.

• Output per channel at 8Ω/4Ω: 150W / 300W
• Output in Mono Configuration 8Ω/4Ω: 200W / 400W
• Frequency Response: 2Hz to 240kHz
• THD at full power: 1%
• Input Impedance – stereo version: 100 kΩ
• Input Impedance – mono version: 50 kΩ
• Gain (Nominal into 8Ω): 26dB
• Tube Complement: n/a
• Number of Power Cords: 1
• Remote Control
• 12V Trigger Input & Output
• Power Consumption (Idle/Full Power): 225W/1400W
• Dimensions: 19″ x 6.5″ x 16″
• Weight: 75lb.