Liquid Spark $99 Review

February 16, 2020 § Leave a comment

The Liquid Spark uses a DC-coupled topology from the input to the output stage and is a fully discrete design. This approach eliminates the need for capacitors and op-amps in the signal path that might colour the overall sound. At the differential input stage the Liquid Spark uses laser-matched, low-noise audio JFETs instead of traditional bipolar transistors. JFETs are known to perform well in low-level applications, producing little noise while at the same time providing high input impedance. The output power stage employs high performance MOSFETs, which are ideal for designers looking to provide high power and very clean amplification within tight space constraints. The net result is a compact headphone amplifier that employs dual 18V filtered power supply rails that produces a convincing 1300mW RMS per channel into 50 ohms with very low distortion. With adjustable gain on the front panel, the Liquid Sparks exhibits a remarkable ability to produce a full sound that is crisp, quick, and sits quite comfortably in comparison with headphone amplifiers double or even triple its cost, as we will discuss shortly. “

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