SMG Productions CS-D 500 Series Mic Preamp – Early Prototype Release SN#0016, API VPR Certified, Studio-Kept

SMG Productions CS-D OG 500 Series Mic Preamp – Early Prototype Release, API VPR Certified, Studio-Kept

Selling an early prototype release of the SMG CS-D 500 series mic preamp—a powerful, boutique module with musical tone shaping and modern flexibility. This unit was designed with attention to high-fidelity specs, while also offering tone tools that bring character and control to your signal.

Lightly used and kept in a smoke-free studio environment. It’s in excellent condition and fully functional.

Key Features:

• API VPR Alliance Certified – Fully compatible with API lunchboxes and 500-series racks
• Wide Gain Range – 12 to 50 dB via main control, with up to 67 dB total gain including output stage
• Continuously Variable High-Pass Filter – Roll off low frequencies from 3Hz to 300Hz (6 dB/oct)
• Timbre Switch – 3-position tone sculpting:
  • Up: Air boost (+12 dB @ 25kHz)
  • Down: Warmth roll-off (-3 dB @ 15kHz)
  • Center: Flat response
• Built-In Soft-Knee Limiter – With continuously variable threshold and visual GR indicator—great for adding subtle presence or preventing overs
• Output Trim Control – Fine-tune your output level from -12 to +12 dB
• Polarity Reverse Switch – Instant phase flip for mic matching or stereo compatibility
• Transparent, Hi-Fi Specs –
  • Frequency response: +0/-1 dB from 10Hz to 120kHz
  • THD+N: <0.002% at +26 dBm output
  • Max Output: >+27 dBm
  • Phase accuracy: <8° from 50Hz to 20kHz

Condition:

Studio-kept, smoke-free environment. Lightly used, fully functional, and ready to ship.

Included:

• SMG CS-D Mic Preamp Module (500 series format, early prototype release)
• Secure packaging for safe transit

This early prototype version of the CS-D is ideal for engineers or collectors interested in boutique preamps with a high-end signal path and character-shaping tools. Whether you’re recording vocals, drums, or acoustic instruments, this preamp offers exceptional clarity with versatile control.

Ships fast, packed with care. Feel free to reach out with any questions!

(Price is for one unit.)