NEW YORK--(BUSINESS WIRE)--JetSet Group Inc. has just launched its most exclusive private jet cards, the Diamond 250 and the Diamond 500. The Diamond jet cards are the ultimate in luxury jet ...
Turning to frequency response, the Diamond 230 and 240 are both rated from 40H-20kHz +/-3dB, while the 250 extends the low end down to 35Hz. Depending on your tastes, the low end extension here could ...
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