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BHK Mono 300 Power Amplifier - Refurbished

BHK Mono 300 Power Amplifier - Refurbished

When you are unwilling to compromise performance we offer the BHK 300 Signature 300 watt Monoblock power amplifiers. They are among a rare handful of amplifiers capable of uncovering music's rich tapestry in a lush, uncompromised, effortless presentation.
The audio performance and build quality of the Signature 300 series has been refined, honed, and polished over the past half century of design work by industry legend, Bascom H. King. They are mono block amplifiers that produce 300 watts into 8Ω, 600 into 4Ω, and a whopping 1,000 watts into 2Ω. The BHK Signature 300 Monoblock designs are built upon two proven topologies: a zero-loss vacuum tube input stage coupled to a high bias differentially balanced MOSFET output. If you are uncomfortable with compromise and seek the finest performance, reliability, and build quality, the BHK Signature 300 series is a perfect fit that can drive any loudspeaker to musical perfection.

You have 14 calendar days to audition a Refurbished item from the date you received it. For more information on PS Audio Refurbished units click here.

$12,748.00 USD
$16,998.00 USD $12,748.00 USD
On Sale Sold out
Shipping calculated at checkout.

In Home Evaluation

This product is eligible for a full 30-day in-home evaluation. Once the product arrives you have a full 30-days to make sure it’s everything you hoped it to be. If not, our no-hassle return policy will refund 100% of your purchase price. We want you to be thrilled.

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  • Design

    The hybrid vacuum tube/MOSFET design of the BHK Signature Amplifiers provides stunning musical performance through any loudspeaker.The Signature 300 Mono doubles the output current of the 250 Stereo, and doubles the tubes, power supplies, transistors, capacitors and resistors. The results are hard to put into words. Your first listen to these extraordinary monoblock amplifiers will likely be a revelation. For perhaps the first time you'll discover all that has been long buried in your musical collection. You'll know this amp was the right choice from the very first note you play.

  • Application

    The BHK Signature 300 Mono Amplifier is one of only a rare handful capable of uncovering music's rich tapestry in a lush, uncompromised, effortless presentation. If you haven't any barriers to perfection, the BHK 300s are perfect for any size system in the world, producing a minimum of 300 watts into 8Ω, a minimum 600 watts into 4Ω, and an astonishing 1000 watts into 2Ω. Enough linear amplifier power to bring life to music as you've only experienced with live music.

    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 300 has no peer. The Signature 300 monoblock amplifier produces 300 watts into an 8Ω loudspeaker, 600 watts into 4Ω, and 1,000 watts into 2Ω, providing unfettered and unrestricted dynamics and musical ecstacy that only a rare few are able to enjoy.

    Features

    • ZERO LOSS INPUT TUBE
    • POWERFUL MOSFET OUTPUT STAGE
    • THROUGH-HOLE CONSTRUCTION
    • RCA SINGLE-ENDED INPUT
    • XLR "TRUE" BALANCED INPUT
    • 300 WATTS PER CHANNEL 8Ω
    • 600 WATTS PER CHANNEL 4Ω
    • 1000 WATTS PER CHANNEL 2Ω
    • -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
    • FULLY PARALLELED INSIDE
    • EASY ACCESS FOR TUBES
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    Specifications - BHK Mono 300 Power 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

    Downloads

    Reviews

    • Deon Schoeman, Audio Video Magazine

      Yes, it's all things you'd expect from a top flight amplifier: powerful and precise, fast and dynamic, generous in its staging, and close in its focus. But its ability to translate those elements into a musically coherent and consistently compelling performance is what sets the BHK Signature apart from any other power amplifier I've listened to. I sense a classic in the making

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    • Dirk Somer, Hi Fi Statement

      The BHK Signature 300 Amplifier are nothing less than world-class amplifiers: Sonically they leave nothing to be desired, as they combine in perfect style power and control with softness and emotion. And PS Audio circuit Bascom H. Kings packed in simple and well designed housing instead of aluminum sculptures, the Monos can decorate with an unprecedented low price / sound ratio: downright reasonable dream amplifiers

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    • Erich Wetzel, Soundstage!

      PS Audio's BHK Signature 300 Mono amplifiers produced wonderfully clear sound in my room, yet with a tangible, 3D quality that gave the music emerging from my speakers a bit more body -- which I really enjoyed. Their soundstaging was exceptional, and they proved unflappable throughout the listening period, despite being challenged with complex music and punishing volume levels. Their treble response was clean without sounding edgy, allowing me to enjoy longer listening sessions than I have with

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    • Patrick Dillon, Hifizine

      When PS Audio decided to re-enter the amplifier market with a statement product, I am not sure even Paul McGowan anticipated what would result. That they have succeeded in creating something special is clear from my listening. The process of bringing on board a legendary designer and allowing him freedom to design to a sonic target while keeping costs in the realm of reasonable (ahem!) is more than mere advertising hype. At nearly $15k for a pair, these are not highly affordable products but

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    • Michael Fremer, Stereophile

      The fact is, the BHK Signature 300 is a powerful, nimble-sounding amplifier that immediately drew me in with fast, punchy, tight bass; rich, liquid mids; and delicate, transparent highs—all effectively well integrated into a coherent whole

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    • Rafe Arnott, Parttime Audiophile

      I've heard this amplifier in several systems…over the past couple years, and came away incredibly impressed on every occasion. An effortless presentation to every recording is a hallmark of PS Audio in my experience, with speed, dynamics, and an innately natural, unforced sound to everything from heavy metal, to intimate acoustic guitar solos. King seems to have harnessed the best of both worlds (tubes, and solid state) in this design, and the fact that it's made in the USA by real people

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    • Michael Fremer, Stereophile

      The fact is, the BHK Signature 300 is a powerful, nimble-sounding amplifier that immediately drew me in with fast, punchy, tight bass; rich, liquid mids; and delicate, transparent highs—all effectively well integrated into a coherent whole

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    • Anthony Cordesman, The Absolute Sound

      They have truly exceptional imaging, depth, and natural soundstage width, and they really can get the best out of the naturally miked and produced recordings that have a real-world soundstage. The 300s' dynamics are extraordinary, particularly in the lower octaves that seem to be in even more demand for audio reproduction today than the upper octaves

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    Questions?