LIQUID SPARK HEADPHONE AMPLIFIER P/N 33304 User’s Manual
The Liquid Spark is a compact, desktop solid state headphone amplifier. It has one TRS (standard ¼” phone plug) single ended output and one RCA preamp output. The amp has one set of (RCA) inputs. The LS (Liquid Spark) has gains of 3X and 6X, front panel selectable, and an approximate full output power of 1.3W per channel with a 50 ohm load.
Amplifier Operation 1. The LS has a short startup delay to protect the headphones. Do not attempt to defeat this startup timing. Do not repeatedly push the power button on and off because this will always reset the timing. 2. Plug the Monolith/Liquid Spark labeled power supply into the back of the amplifier. 3. Press the power button to turn on the amplifier. 4. The small LED in the center of the front panel should light red. 5.
Protective Circuit There is one protective circuit in the LS which protects the headphones from DC offset. The protective circuit is triggered if either or both channels exhibit an average DC voltage above the set threshold. If this happens the LED will turn to Red and the amplifier will be in protection mode and will not operate. In normal operation, when the issue is relieved, the LED will return to its white condition indicating that the amp is ready for operation again.
Amplifier Break-In • Most amplifiers need at least 100 hours of continuous music playback to reach their full sound signature. • It is not necessary to set up a break-in period. The amp will change character as you listen normally and you will hear it evolve into its natural sound signature. • If you do employ break-in, we recommend about 100 hours playing in continuous music mode with no headphones and the volume set to about 10 o’clock.
Servicing There are no serviceable parts in the amplifier. Do not attempt to service the amplifier. All servicing must be referred to authorized service personnel. FOR YOUR PROTECTION Ventilation Your amplifier runs warm and requires free air circulation to the vents on the product. Never place the amplifier in an enclosed space with restricted airflow, especially one with low vertical clearance.
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