Originally Posted by braillediver
What’s the generally accepted sound signature of the K1000?
Sound signature? You want sound signature, then you don't want K1000s. There is little or none - they are a clear, accurate window into your source and amp, both of which better be good, or you will hear it. There is that bass "shelf" at 30 hz or so where they fall off a cliff, and refuse to acknowledge anything deeper. Small price to pay for the rest.
Think of Grado HP2s with the windows open - more air and space, but same transparency, neutrality and honesty.
K1000 is a unique and wonderful headphone - congrats on scoring a pair, Mitch.