I was given an opportunity to purchase a new open back headphone from Kaldas, the makers of the Conquest RR1 electrostatic headphone. I had purchased the RR1 a few years ago and it was my gateway to Electrostatic headphones. So when they reached out about a new open back dynamic driver headphone I was very interested. The CAL.1H is a dynamic driver headphone that is fairly easy to drive, any dap should work fine, that holds pretty close to the Harman target. It has a very open sound stage without any real harshness at all. Smooth would be a good...