The Coil Audio CA-70 MK2 Preamp Module brings the unmistakable sound of one of the most sought-after vintage tube microphone preamp designs into the Coil Audio modular ecosystem.
Drawing inspiration from the legendary RCA BA-11A amplifier platform, the CA-70 MK2 delivers enormous depth, rich harmonic texture, and effortless musicality that has made classic tube recording equipment a staple in world-class studios for decades. From vocals and acoustic instruments to drums, bass, and electric guitars, this preamp captures sources with a larger-than-life presence that immediately feels finished and record-ready. Designed for use with the Coil Audio PS6 MK2 Power Supply system, the CA-70 MK2 combines authentic high-voltage tube operation with custom transformers and meticulous hand-built construction. The result is a preamp that offers exceptional clarity and detail while maintaining the warmth, weight, and dimensional character engineers expect from premium vintage-inspired tube designs. Whether used as a single channel centerpiece or as part of a larger multi-channel Coil Audio setup, the CA-70 MK2 delivers the kind of tone that inspires performances and elevates recordings.
Coil Audio CA-70 MK2 Preamp Features
- Single-channel all-tube microphone preamp module
- Designed to be used with the Coil Audio PS6 MK2 Power Supply
- Inspired by the classic RCA BA-11A amplifier topology
- High-voltage tube circuitry for authentic vintage performance
- Custom transformer-balanced input and output stages
- Rich harmonic character with exceptional depth and dimension
- Ideal for vocals, drums, bass, guitars, and acoustic instruments
- Hand-built construction using premium components
- Modular format allows flexible multi-channel system expansion
- Made in the USA
Coil Audio CA-70 MK2 Preamp Includes
- Coil Audio CA-70 MK2 Preamp
- Manufacturer Warranty

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