Seventh Circle Audio Modular microphone preamp 2011 - Nickel

Seventh Circle Audio (SCA) produces some of the most highly regarded hardware clones of classic studio preamps. The SCA A12 emulates the legendary API 312, while the SCA N72 emulates the vintage Neve 1272 line amp (adapted into a mic preamp). [1]🎛️ The SCA A12 (API 312 Emulation)

• The Sound: Known for its punchy, forward, and aggressive character with a tight low end and a clear, open top-end. 
• The Specs: Features up to 70 dB of gain, a Grayhill stepped gain control (15dB to 70dB in 5dB steps), and a trim control for fine-tuning. 
• The Components: Uses a custom SC25 discrete op-amp and CineMag input/output transformers (steel-core CMOQ-2S) for that authentic API snap. 
• Best For: Drums (especially snare/kick close mics), electric guitars, and aggressive bass. 

📻 The SCA N72 (Neve 1272 Emulation)

• The Sound: Renowned for its heavy tone, warm/creamy midrange mojo, and silky (though slightly darker) high end. Pushing the gain and trimming the output yields a very pleasing harmonic distortion.
• The Specs: Offers up to 70 dB of gain and features an additional impedance switch for mic matching and tonal sculpting.
• The Components: Built with Carhill transformers (direct descendants of vintage Marinair transformers) and high-quality switches.
• Best For: Vocals, rock bass, crunchy guitars, and beefy drum shells. 

🛠️ Purchase Options & EcosystemBoth preamps are housed in the proprietary SCA modular chassis/rack system (like the BC01). You can mix and match modules to build a custom multi-channel console. 

• DIY Kits: Available for those comfortable with soldering, saving you around $100–$120 per module.
• Pre-Assembled: Factory-built and tested units are available directly from the Seventh Circle Audio Store.