2013 Munich High End Show: Erzetich Audio Headphone Amplifiers
One of many cool and unusual features of the Munich High End show was a "Newcomer" area. Upstart firms have a hard time affording the big room rates, so a budget display area is a great idea. Arranged radiating in a circle, about eight chest high counters (each about 6'x2') gave Newcomer exhibitors the opportunity to reach out to show-goers. There, introducing themselves to the audio world, was Slovenian headphone amp maker Erzetich Audio. CEO Blaz Erzetich started the company last September but has been working in audio for almost 25 years, and it shows in his gear. And I'm not talking about the outsidethough the gear looked dandy to me. Erzetich amps use a current drive output, that quite a bit different than a normal voltage drive amplifier. The input voltage signal goes through an op-amp gain stage, but the output of the amplifiers converts the voltage signal to a current signal. That means that the output voltage of the amplifier will do anything it needs to to deliver a current signal that matches the audio input to the amp to the voice coil of the drivers. It's the current in the voice coils that actually drive the diaphragms, so this type of amplifier creates a very linear relationship between the input audio signal and the driver's physical response. I'll forewarn you that current drive amps seem to be a coming phenomenon in the world of headphones, and you'll be hearing more and more about them over time. I very much like the idea personally.