Reviewers praise the Square One range for Midas-inspired preamps and transparent compression.

Will continue lowering price until someone grabs this great deal. Today's market prices range from $350 – fair condition to $1350 - mint condition.

I have used two of these, one for live mixing which I found to be excellent making my job easy. Have already sold that unit to a local live entertainment venue. The unit you see here has been used only in the recording studio and is in mint condition. i'm leaving the audio engineering world for a while, otherwise I definitely would not sell either. if you are lucky enough to even find one of these, the prices for one like this in MINT condition are much higher than what you can purchase this one for. MAKE OFFER.

The Klark Teknik Square ONE Dynamics (SQ1D) is an 8-channel dynamics processor housed in a robust 3U rackmount chassis. It combines compressors, gates, and expanders into a single hardware unit, commonly found in live sound and production rigs. [1, 2, 3, 4, 5]Key Features

• Dual-Functionality Channels: Each of the 8 channels can be switched to act independently as either a compressor or a noise gate.
• Compression Options: Includes RMS (slow/subtle) or Vintage/Peak sensing, alongside soft or hard knee modes.
• Intelligent Gate Hysteresis: The gate employs "Intelligent Threshold Shift" to prevent false triggers and annoying "gate chatter".
• Frequency-Selective Processing: Features onboard side-chain band-pass filters for frequency-dependent compression/gating (like de-essing) and an external key input.
• Solo Bus: Features an additive solo bus to monitor external side-chain control signals without affecting the main audio. [1, 2, 3, 4, 5, 6, 7]

Technical Specifications

• Frequency Response: 20Hz to 20kHz, +/-0.5dBu
• Dynamic Range: >117dB unweighted (20Hz to 20kHz)
• I/O Connections: Electronically balanced XLR inputs/outputs, and 1/4" TRS external key inputs.
• Dimensions: Standard 19" rack-mountable, 5.25" (133mm) deep, weighing 9.7 lbs (4.4 kg).
• Power Supply: Auto-ranging universal switch-mode PSU. [1, 2, 3, 4, 5]

Community Consensus and Reviews

• Professional Feedback: Professional reviews highlight the SQ1D as an incredible space-saver that condenses multiple racks of dynamic processing into a single, comprehensive 3U unit. [1, 2]
• User Sentiments: According to forum discussions, some audio professionals consider it a more budget-friendly unit that stacks up very well against higher-end products.