Klark Teknik DN 504 Quad VCA Compressor / Limiter (Made in UK)

Up for sale is a used, fully tested Klark Teknik DN 504 quad channel compressor/limiter. Proudly built in the U.K., this premium 1RU rack unit packs four channels of legendary, ultra-transparent Klark Teknik dynamics processing into a single rack space. It is a fantastic workhorse for tracking drums, smoothing out live vocals, taming acoustic instruments, or controlling stereo keyboards and subgroups.

Unlike cheap modern gear, the DN 504 is famous for being incredibly transparent and coloration-free—it handles heavy dynamic range reduction cleanly without losing your high-end micro-details or muddying up the bass.

- **4 Independent Channels:** Four high-quality VCA compressor/limiters in a compact 1RU chassis.

- **Stereo Linking:** Can be easily linked into two pairs of matched stereo channels.

- **Knee Control:** Switchable Hard/Soft knee configurations (1dB hard knee vs. 40dB soft knee) to move between aggressive limiting and undetectable dynamic smoothing.

- **Auto/Manual Modes:** Sophisticated automatic attack and release circuitry for quick set-and-forget levelling, or full manual control over Threshold, Ratio, Attack, Release, and Gain.

- **Side Chain Inputs:** Four dedicated side chain inputs for precise ducking or frequency-conscious compression.

- **Pro Connectivity:** Standard balanced XLR inputs and outputs on the rear.

**Shipping Note:** 

This is a robust, premium 5kg (11 lbs) analog rack piece. It will be wrapped securely in heavy bubble wrap and shipped in a sturdy box to guarantee safe arrival.