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Synergistic Research FEQ X4 high end audio Frequency Equalizer
Synergistic Research FEQ X4
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Posted On 7.01.2026
Last Update On 7.01.2026 Synergistic Research FEQ X4
Synergistic Research FEQ X4 Synergistic Research FEQ X4 Synergistic Research FEQ X4 Synergistic Research FEQ X4
Description Original Description is in English, other language texts are translations and can contain errors. EnglishDeutschSpanishTurkish One Synergistic Research FEQ X4 high end audio Frequency Equalizer in a very good condition (the 230 volts EU version). Serial number is FEQ1062. Retail price is 1.195 euro. Complete with original power supply. Synergistic Research recently stopped supplying ground connectors with their products, because in a lot of cases they give a negative effect. Check our other listings for more interesting items. Free shipping worldwide!

FEQ X4 dramatically improves upon the original single antenna FEQ with 4-large broadcast antennas for a full 360-degree immersive experience. FEQ X4 is a single channel ULF (Ultra Low Frequency) RF pulse generator that acts as a low-frequency dither to overpower the ambient RFI and EMI fields in your listening room broadcasting over (4) separate channels for a more immersive experience than was possible from the original single and smaller antenna FEQ.

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