Owner’s Reference ® Owner’s Reference BHK Signature Amplifiers Instructions for Use BHK Signature 250 and 300 Amplifiers™ 4826 Sterling Drive, Boulder, CO 80301 PH: 720.406.8946 support@psaudio.com www.psaudio.com ©2021 PS Audio Inc. All rights reserved.
Introduction Owner’s Reference BHK Signature Amplifiers ® Important Safety Instructions Read these instructions Heed all warnings Follow all instructions WARNING. TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK, DO NOT EXPOSE THIS APPARATUS TO RAIN OR MOISTURE. Clean only with a dry cloth. Do not place flammable material on top of or beneath the component. All PS Audio components require adequate ventilation at all times during operation. Rack mounting is acceptable where appropriate.
Specifications ® Owner’s Reference BHK Signature Amplifiers BHK Signature 250 Stereo and BHK Signature 300 Mono Unit Weight Unit Dimensions Shipping Weight Shipping Dimensions Color Options 83 lbs 17.1” x 8.7” x 14” Chassis only. 15" deep including connectors.
Specifications ® Owner’s Reference BHK Signature Amplifiers THD 1KHz, 1W/8Ω 20-20KHz, 1W/8Ω 1KHz, 200W/8Ω 1KHz, 400W/4Ω < 0.01% < 0.1% < 0.1% (120VAC Mains input) < 0.1% (120VAC Mains input) Noise 100-20KHz <-85dBV Power Consumption Ready Idle Rated power 8Ω Rated power 4Ω 175W 850W 1600W 75W Performance - Signature 300 Output Power (120VAC Mains, 1KHz, 1% THD) 8Ω 300W minimum 4Ω 600W minimum 2Ω 1000W minimum (short term) 2Ω 750W (long term per IEC60065) Gain 30.5dB +/-0.5dB Sensitivity 1.
Introduction Owner’s Reference BHK Signature Amplifiers ® Thank You Thank you for your purchase of the PS Audio® BHK Signature Amplifier. Designed by master engineer and audiophile, Bascom H. King, the BHK Signature Series of amplifiers represents one man’s decades long pursuit of perfection. Nothing was spared, no shortcuts were taken. Zero Loss Power amplifiers are the make-or-break component in a music reproduction chain.
Owner’s Reference ® Owner’s Reference BHK Signature Amplifiers Location Once your BHK is unpacked, you’ll need to find a convenient place to set it. We recommend floor mounting on a platform or shelf mounting as close to the speakers as possible. If the source equipment (preamp or DAC) is far away from the BHK, it is recommended to use balanced interconnects if possible.
Owner’s Reference Owner’s Reference BHK Signature Amplifiers ® Tubes are shipped The BHK Signature ships with a hand matched pair of vacuum tubes pre-installed in the unit. There is no need to install tubes, simply set the amplifier up and you are ready to play it. already installed Tube rolling There are many who will wish to experiment with different tubes on the BHK input in a practice known as tube rolling. The BHK will accept and work with most 6 or 7 series dual triode tubes.
Owner’s Reference ® Owner’s Reference BHK Signature Amplifiers Find the area without pins Match the tube to the socket 4826 Sterling Drive, Boulder, CO 80301 PH: 720.406.8946 support@psaudio.com www.psaudio.com ©2021 PS Audio Inc. All rights reserved.
Owner’s Reference ® Owner’s Reference BHK Signature Amplifiers Place the other tube in the socket Tube life Tubes have limited life spans. With normal use of a few hours a day they can go for many years without replacement. The sonic characteristics of tubes will change over time. At first, many hours are needed to sound best as they break in. As time goes on they will perform beautifully and reach their peak performance.
Owner’s Reference ® Connect the speaker cables Owner’s Reference BHK Signature Amplifiers With the amplifier firmly seated where you have selected, it is time to connect the speaker cables. The BHK Signature uses custom machined connectors. These connectors were specially engineered to match the performance specifications of the BHK. Each connector is hewn from a solid block of high purity copper, and machined on a lathe, then hand polished and gold plated.
Owner’s Reference ® Plug in the connecting cables Owner’s Reference BHK Signature Amplifiers The BHK Signature Amplifier accepts either single ended RCA or balanced XLR connections to the preamplifier or DAC feeding it. Regardless of the cable chosen, the BHK will treat the incoming signal in such a way that it becomes balanced throughout the amplifier’s circuitry. Our preference for connection to the preamplifier is balanced XLR cables.
Owner’s Reference ® Owner’s Reference BHK Signature Amplifiers You are now ready to enjoy your first listen to the BHK Signature Amplifier. Making sure the preamplifier and the system is on, push the front panel standby button on the BHK front panel. The light will blink for 30 seconds as the tubes warm up. When the blinking stops and the PS logo turns steady on, the amplifier is ready to play music.
Questions and Answers Owner’s Reference BHK Signature Amplifiers ® Should the unit be on all the time? We recommend leaving the rear panel master power switch on at all times. We further recommend placing the BHK in standby mode when the listening session is over. Standby mode is accessed through the front panel PS Audio logo button. Fuses? There are multiple fuses in the BHK accessible through the back panel.
Troubleshooting ® BHK won’t play music Check the logo Owner’s Reference BHK Signature Amplifiers Check to make sure power is going into the BHK and it is connected to a live source. Make sure the rear panel master power switch is in the on position and the lights near the tubes are lit. Push the front panel logo light and it should blink, then remain lit after 30 seconds. If it is lit, look to the rear of the unit and see if the tubes are lit and glowing.
Troubleshooting ® It may be something unrelated causing the hum The system has no bass Owner’s Reference BHK Signature Amplifiers VCR’s, surround processors, and any device that is connected to a television cable or satellite dish can cause a loud buzz and should always be suspect.
Warranty ® Owner’s Reference BHK Signature Amplifiers Limited Three Year Warranty Should I Register My Product? • • • • • Registering your product validates the warranty start date. If you do not register your product within 30 days of service, a copy of your purchase receipt from an authorized PS Audio dealer may be used as a proof of purchase to establish the warranty start date.
Warranty ® • • • • • Owner’s Reference BHK Signature Amplifiers Alterations or modifications to the unit Improper or unauthorized repair, including repairs not authorized by PS Audio or a PS Audio authorized repair center Fire, lightning, flood, “acts of God,” or other contingencies beyond the control of PS Audio Products purchased through an unauthorized source (if you have questions as to whether or not a dealer is authorized, please contact customer support at psaudio.
Warranty ® Owner’s Reference BHK Signature Amplifiers How State Law Applies This warranty gives you specific legal rights, and you may also have other rights which vary from state to state. Warranty Service Outside of the US PS Audio has authorized distribution in many countries of the world. In each country, the authorized importing distributor has accepted the responsibility for warranty of products sold by that distributor. Warranty service should be obtained where the product was purchased.
