Stop Fighting the Audio Panel. Start Hearing The Alerts.

Installing modern safety tech shouldn't require a $5,000 "center stack" surgery. Holy Micro’s new Stack-Pass MixAmp is designed to bypass the complexities of the audio panels, saving you thousands in installation costs while guaranteeing you never miss a critical alert.

The Problem: The "Audio Bottleneck"

Most pilots face three major hurdles when adding new gear:

   1. No Room: Existing audio panels are often "maxed out" with no open ports.
   2. Audio Drowning: Critical alerts get muted or overpowered by busy ATC chatter or ground radio.
   3. High Risk/Cost: Opening a decades-old center stack is a "can of worms" that most mechanics won't touch, and specialized avionics shops charge big.

The Solution: The Holy Micro Independent Audio Path

Our FAA-approved speaker with mixer-amp-driver board provides a dedicated, high-resolution audio environment for your Absolute AoA and SkyVoice products without ever touching your audio panel.

• Zero Stack Interference: No need to disturb your GPS, Transponder, or Radio wiring. If your A&P can run a power wire, they can install this system.
• 3-Channel Smart Mixing: Connect up to three audio sources, two wired and one BT audio. Hear your Absolute AoA tones and SkyVoice altitude announcements mixed perfectly in real-time—a feature no other product on the market offers.
• Guaranteed Audibility: Our high-grade aviation speaker is designed to penetrate even the most advanced noise-canceling headsets. Your alerts will never be drowned out by radio traffic again.
• Massive Cost Savings: By simplifying the install to a basic electrical task, you save many thousands of dollars in specialized avionics labor and considerable delay.
• Versatile Integration: Prefer your headset? Use the board as a "pre-mixer" to combine three signals into one single un-muted input on your existing audio panel.
  

The Bottom Line: You get the safety of Absolute AoA and SkyVoice Alert with a "no-surprises" installation. It’s cleaner, louder, and significantly more affordable.

Items included: One 4inch Square aviation grade, DO-160 compliant, Flame Retardant 5 watts , 8 ohm, 90 dB SPL Voice Range speaker and one mixture & amplifier driver board with volume control.