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BHK Signature 250 Amplifier

BHK Signature 250 Amplifier

Closeout Special! Silver units expected shipping by Early March
The BHK 250 stereo power amplifier is an industry reference standard for performance—a 250 watt per channel investment grade musical instrument that brings life to music.
The BHK Signature 250 Stereo Power Amplifier culminates one man’s lifelong quest for perfection in power amplification. Bascom H. King’s magnum opus combines a vacuum tube input with a powerful MOSFET output capable of 250/500 watts per channel. When cost-no-object performance is the goal there are a rare handful of power amplifiers capable of transporting listeners into a musical space few are able to enjoy. The BHK Signature 250 is one such amplifier. Lush, gorgeous, powerful, revealing, hand built, perfect. If you are uncomfortable with compromise and seek the finest performance, reliability, and build quality in a single-chassis format, the BHK Signature 250 is a perfect fit.
Regular price $4,249.00 USD
Regular price $8,499.00 USD Sale price $4,249.00 USD
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  • Design

    Nothing in the design of a power amplifier is more important than its input stage when preserving music’s finest nuances. In the BHK Signature, a vacuum tube serves as the perfect interface between the preamplifier and MOSFET output stage. This hybrid approach offers stunning musical performance and unrivaled, effortless drive to the speaker. The Signature 250 Stereo Amplifier is the ultimate choice when a single chassis solution is required.

  • Application

    The BHK Signature 250 Stereo Amplifier produces 250 watts/ channel into an eight-Ohm loudspeaker, 500 watts/channel into four-Ohms, and stable into 2-Ohms; enough power to satisfy even the hungriest of loads. Use this amplifier as the bedrock of your high-performance audio or home theater system. The BHK 250 provides the finest performance, reliability and build quality possible, in a single chassis format.

    Technology

    The importance of the power amplifier in the 2-channel system chain cannot be overstated, yet it's often overlooked. It's the rare few music lovers that truly appreciate the power amp's critical role in preserving music's nuanced details, because most amplifiers fail to preserve them. Overtones from plucked instruments, subtle cues defining placement, depth, soundstage width, and transient decays are often lost in the power amplifier. Suddenly revealed are the tiniest of details that now ring clear through the BHK, perfectly preserved through its low feedback, vacuum tube and MOSFET design. When it comes to musically controlling and powering loudspeakers, the BHK Signature has few peers at any price. The stereo Signature 250 produces 250 watts/per channel into an eight-Ohm loudspeaker, 500 watts/channel into four-Ohms, and stable into 2-Ohms; enough power to satisfy even the hungriest of loads.

    • ZERO LOSS INPUT TUBE
    • POWERFUL MOSFET OUTPUT STAGE
    • THROUGH-HOLE CONSTRUCTION
    • RCA SINGLE-ENDED INPUT
    • XLR "TRUE" BALANCED INPUT
    • 250 WATTS PER CHANNEL 8Ω
    • 500 WATTS PER CHANNEL 4Ω
    • 2Ω STABLE
    • -3dB > 200khz
    • < 0.1% THD 20Hz - 20kHz AT RATED POWER
    • DAMPING FACTOR = 100
    • FRONT PANEL STANDBY BUTTON
    • BALANCED INPUT TO OUTPUT
    • DUAL, COPPER, PLATED, OUTPUT BINDING POSTS
    • 83 LBS.
    • INPUT 12 VOLT TRIGGER
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    Specifications - BHK Signature 250 Amplifier

    BHK Signature 250 Stereo and BHK Signature 300 Mono

    Unit Weight 83 lbs [37.6 kg]
    Unit Dimensions 17.1” x 8.7” x 14” Chassis only. 15" deep including connectors.
    Shipping Weight 92 lbs [41.7 kg]
    Shipping Dimensions 21”x 13” x 19”
    Color Options Black
    Silver
    Voltage Options
    Factory set only
    Japan 100V
    North America 120V
    Europe/Asia/Australia/New Zealand 230V
    Mains Power Inputs IEC C14
    Fuse Compliment all Countries 4 - 10 amp fast blow H-Rated 5x20mm Rail Fuses
    Fuse Compliment Mains 100vac Countries
    1 - 2 amp slow blow H-rated 5x20mm
    1 - 12 amp slow blow H-rated 5x20mm
    120vac Countries
    1 - 2 amp slow blow H-rated 5x20mm
    1 - 10 amp slow blow H-rated 5x20mm
    230vac Countries
    1 - 1.6 amp slow blow H-rated 5x20mm
    1 - 5 amp slow blow H-rated 5x20mm
    Accessories Included US (NEMA 5-15P) (all versions)
    Schuko (CEE7/7) (230V version)
    UK (BS 1363) (230V version)
    Audio Inputs RCA (Unbalanced)
    XLR (Balanced)
    Speaker Outputs Signature 250 Gold plated copper binding posts (2 pair per channel)
    Speaker Outputs Signature 300 Gold plated copper binding posts (2 pair)
    Other DC Trigger Input
    3.5mm 5-15VDC
    Warranty 3 years parts and labor on unit
    1 year on vacuum tube

    Power Consumption

    @Ready 75 Watts
    @Idle 175 Watts
    @Rated power 8Ω 850 Watts
    @Rated power 4Ω 1600 Watts

    Signal

    Gain 30.5dB +/-0.5dB
    Sensitivity for rated output power of 250 watts into 8Ω 1.3V
    Noise 100-20KHz <-85dBV
    Input impedance Signature 250 stereo Unbalanced 100KΩ
    Balanced 200KΩ
    Input impedance Signature 300 mono Unbalanced 50KΩ
    Balanced 100KΩ
    Output Impedance 50Hz, 2.8VRMS <0.1Ω
    Frequency Response @2.8VRMS
    10Hz – 20KHz +/- 0.1dB
    10Hz – 200KHz +0.1/-3.0dB

    THD&IM

    1KHz, 1W/8Ω <0.01%
    20-20KHz, 1W/8Ω <0.1%
    1KHz, 200W/8Ω < 0.1% (120VAC Mains input)
    1KHz, 400W/4Ω < 0.1% (120VAC Mains input)

    Signature 250 Stereo Amplifier

    Output Power

    Both channels driven 120vac mains, 1kHz, 1% THD
    8Ω 250W minimum
    4Ω 500W minimum
    2Ω Stable for musical transients

    Signature 300 Mono Amplifier

    Output Power

    120vac mains, 1kHz, 1% THD
    8Ω 300W minimum
    4Ω 600W minimum
    2Ω 1000W

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