Denon is one of the most present manufacturers in the world of audio equipment and is one of the few that still produces all categories of audio products. From professional turntables, mixers to audiophile amplifiers, and network music players. This very wide offer also includes a whole range of headphones. Today we will present you Denon AH-GC30 in our review article. A few months ago, we had the opportunity to test classic high-end over-ear headphones that left a very good impression. For this article, we are testing the slightly cheaper AH-GC30 headphones (~ $ 400) made with many built-in modern