Hi,
To answer:
1. The K1000 has been out of production for nearly 10 Years. It is really no longer competitive with modern headphones.
For those less familiar, it is even hungrier than the HiFi Man HE-6.
The micro iDSD will provide 8V, which is enough for 100dB peaks on the K1000, this may be enough for some, but not for others.
Incidentally, as a point of reference, the SAC Headphone Amplifier which was designed specifically for the K1000, delivers 11.5V, so ~3dB more than the micro iDSD.
The micro iDSD with the K1000...will go loud but it wont go to head-banging levels.
It really is a matter of if the micro iDSD drives the K1000s loud enough for your taste - so please try first.
Lastly, the micro iDSD won't do anything about strange looks from wearing the K1000s on-the-go...
2. Hang fire...we have another announcement today.