Make Noise has released the 7U 4 Zone CV Bus Case, a 208 HP Eurorack case featuring a new four-zone isolated power system and the CV Big Bus — an eight-channel evolution of the original 2013 CV Bus designed for Alessandro Cortini’s system. The case updates the mounting rails to black anodized tapped strips, replacing the sliding nut design of previous versions, and the removable lid closes with the system fully patched.
The 4 Zone Power system provides isolated +12 VDC and −12 VDC supplies with a dedicated ground return per zone, allowing noisy modules to be separated from noise-sensitive ones. Total available power is +12 VDC @ 4 A, −12 VDC @ 2.4 A, and +5 VDC @ 1 A, with 31 shrouded power connectors to prevent incorrect installation. The CV Big Bus doubles the channel count from four to eight, distributing signals across the center of the system with illuminated numerical indicators showing channel number, level, rate, and polarity for up to eight signals.
A built-in stereo line driver converts modular signal levels to line level, with mini-jack inputs for left/mono and right, a master volume control, and stereo line outputs — the left output doubles as a TRS ⅛″ headphone output. Outputs are AC-coupled with a built-in limiting circuit and visual indication to protect ears and PA systems during experimental patching. The powder-coated metal construction offers mechanical durability, and the matte black finish matches Make Noise’s Black & Gold module line.
The CV Bus approach places control signals beneath their potential destinations for cleaner patching, with color coding and visual indication making complex patches easier to navigate. The case is designed to accommodate the higher modulation density of modern systems such as Make Noise’s New Universal Synthesizer System (N.U.S.S.). The CV Big Bus can also be purchased separately to upgrade older 7U cases.
Source: Make Noise, October 2026
Available now: 7U 4 Zone CV Bus Case $1,035 / £939 / €1,099; CV Big Bus $299 / £274 / €319 (via Thomann and Sweetwater).