All user reviews for the Klark Teknik DN 504

I’ve personnally mostly used this Quad Compressor live.
It was old and looked used and battered, but it still worked wonder. It’s a really sturdy and reliable model! Up to par with the manufacturer’s reputation.

Its features can easily be found through your favourite search engine.

Very well-finished, especially considering how old mine was : it had been used for years and years but was still fully functional (LEDs, selectors and knobs – even though some of them are a little sunk inside…). It’s sturdily built, for sure! Its connectors are great too.

Soundwise, I found it made a great job in live performances.
It brings character to the vocals, allowing them to remain natural-sounding while sticking out in the mix. The automatic options for the knee, attack and release settings allow to set them on-the-fly before tweaking them more precisely, increasing the unit’s flexibility. It also makes it suitable for all users.

I never had an opportunity to try it in the studio or for recording purpose, so I won’t judge it but I’m not worried about its suitability in such circumstances.

What is sure is that you can really hear the setting changes, while retaining a great clarity. The kicks get thicker, the snares keep their proper tones.
I got totally seduced, and my current 01V96V2’s integrated comp sounds like a lightweight compared with it.

Getting four compressions of such a high quality for the price I paid it (a hundred euros for a very used unit): what more can you ask? I owned another rack with two BBE comp – no contest, the Klark was way better!

I only rate it 4 stars due to my own unability to judge of its qualities in the studio, but I have no ill to say of it. Please note I’m not a professional user, only a rather enlightened amateur, self-taught user.