unknown custom
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Unknown Custom Quad 2.0
Unknown Custom is a budget custom IEM company from Malaysia. They operate mostly from Facebook, (https://www.facebook.com/UCCIEM/). The current flagship, Quad 2.0 is a 4BA with 3-way passive crossover design. SPECIFICATIONS: FREQUENCY: 20Hz-20kHz IMPEDANCE: 26 Ohms@1kHz SENSITIVITY: 124dB...