Recording, Mixing and Mastering
Karno SEPIA: the analog‑digital modular system for the modern studio
Published on 30/10/2025
Karno SEPIA: the modular analog-digital system for the modern studio
Introduction to the Karno SEPIA System
Karno's SEPIA system represents a new philosophy in professional audio equipment: a modular ecosystem that combines the quality of the pure analog path with the flexibility of digital control.
In practice, Karno has developed two core elements: a Host that houses multiple module slots and the modules themselves (preamps, EQs, compressors, and others) manufactured by several high-profile partners.


Why SEPIA is different
- Full analog path: the signal remains analog from the microphone to the output thanks to "Bridging Signal Flow" technology.
- Digital control: SEPIA modules are digitally controlled, without physical front-panel controls, allowing instant recall and integration with modern DAWs/workflows.
- Modularity and scalability: you can start with one Host and populate it gradually, choosing modules from various partner brands.
Key features of the SEPIA system
- Host in 1U rack format with 6 slots, designed to accommodate SEPIA modules.
- Slots supporting certified analog modules, each with rear pin-metal connections (~21 pins) carrying audio, power and data.
- Advanced internal routing: each slot has primary input, secondary (mic/line), and two outputs; ability to configure complex analog chains, side-chain, inter-module insert.
- Compatibility with modules developed by established brands: partners such as API, SPL, Pope Audio, Malcolm Toft Audio, and others are announced at launch.
Variants of the SEPIA L6 Host.
The L6 1U 19" Rackmount model is the reference for the SEPIA system and comes in three main versions to suit different studio/live workflows:
- L6 Analog Output: traditional analog outputs, ideal for pure analog chains.

- L6 Dante I/O: supports Dante audio network, 8 channels of I/O up to 96 kHz, perfect for multi-channel environments and digital routing.

- L6 MADI I/O: MADI interface for integration with broadcast or large studio systems.

Optional cards and I/O routing.
To extend flexibility, the L6 Host also supports optional cards for various I/O formats and advanced routing, including:
- Assignable Analog Output card



Context of use and benefits
The SEPIA system is ideal for professional studios, tracking rooms, mixing rooms, and hybrid environments wherever desired:
- True analog sound with headroom and professional quality
- Routing flexibility and modularity: change modules, upgrade, configure custom routing
- Digital recall and integration with DAW workflows: module parameters can be recalled, saved and recalled in session
- A scalable investment: start with a few slots and modules, expanding as you go
SEPIA modules available
Modules launched for the SEPIA system include (among others):
SEPIA system at a glance
| Feature |
Description |
| Signal path |
Pure analog, without A/D-D/A conversion, due to host routing matrix |
| Control |
Digital, with parameter recall, preset saving and DAW integration |
| Modularity |
Hosts with interchangeable slots; partner-certified modules |
| Scalability |
Expandable over time with new modules and I/O cards |
| Studio compatibility |
Designed for tracking, mixing, mastering in hybrid or full-analog contexts |
When to consider the SEPIA system?
- Do you have a studio that wants to invest in a high-quality modular ecosystem
- You want to mix and record with analog equipment, but with digital appeal
- Want to expand over time: start with a Host and a few modules, and then grow
- You already have an analog chain, but you want modularity and flexibility
It should be clear: the SEPIA system requires investment and proper studio design (power supply, racks, cabling, workflow). However, for those seriously working in professional production or mixing, it represents a platform that combines pure analog and modern flexibility.
Availability at Milk Audio Store
At our site you can find the SEPIA Host and numerous modules for the optimal setup of your studio.
Here are all Karno SEPIA modules and hosts 👉 https://www.milkaudiostore.com/intl/products/recording-mix/sepia-modules/