Hi qwertgfdsa,
The guys above answered this correctly - the Isabellina HPA will not drive the K1000s to loud enough levels.
The K1000s need a home audio speaker amp (like the Sig 30.2) to come alive because they are so inefficient and need more voltage swing that what most headphone amps are designed for.
But adding the Isabellina HPA as a dac into your 30.2 will make those K1000s really sing (I use the Isabellina + 30.2 combo for my K1000s

).
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wow these Red Wine products look amazing I am curious about this one for droolstatus
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Thanks!
Best regards,
Vinnie