Steve Kercel AA4AK wrote: "Does the K2 produce sufficient audio power to drive a set of Bose Quiet Comfort 2 noise cancelling headphones? Has anyone on the list tried Bose Quiet Comfort 2 noise cancelling headphones with a K2?" Steve, I use the Bose QuietComfort 2 noise cancelling headphones all the time with my K2. They work great. 73 K2CG Chuck Gehring