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Owner’s
Reference
4826 Sterling Drive, Boulder, CO 80301
15-070-01-1
PH: 720.406.8946 [email protected] www.psaudio.com
Rev A2
Owner’s Reference
©2015 PS Audio Inc. All rights reserved.
®
Owner’s Reference
BHK Signature Amplifiers
Leave It On
Standby
Logo Light Fault
Mode
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.
Once the amp is on for the first time, we recommend leaving it on for 24 hours, then placing it in
standby whenever you are finished listening. Placing the amplifier in standby through the front panel
standby button helps preserve tube life, yet keeps the BHK warmed and ready to go.
Placing the BHK in standby mode reduces the idle current and the MOSFET circuitry will stay active
at a reduced heat. In standby it is permissible to change inputs and output connections as no
signal may pass. It is not recommended to change tubes while in the standby mode. If you wish
to change tubes, please remove all AC power from the unit and wait at least thirty minutes once
power has been removed before changing tubes.
If the front panel logo light begins blinking and no sound comes from the amplifier it means the
BHK has gone into fault mode. This can happen for a number of reasons including: protection from
low impedance, short circuit protection on the speaker terminals, exceeding the amplifier’s wattage
rating, excessive heat, or DC present on the outputs.
Typically you can just press the logo button and the amplifier will return to normal operation. If the
amplifier tries to turn on and returns to protection mode, check all of the aforementioned causes
and correct the problem before trying again. If nothing seems wrong, remove both inputs and
outputs and try again. If that still does not release the unit from protection mode, remove all power
from the amplifier and check the fuses. In the unlikely event none of these remedies work, call your
dealer, or PS Audio, for help.
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