VAS Outdoor Transformer FS4000D for Battery System

The VAS Audio Transformer FS4000D for Battery System is a reliable, mobile power solution built to run your full or starter Simba or Faya rig anywhere, no sockets needed. Designed for mobile sessions, off-grid festivals, or street setups, it delivers clean, stable 230V output straight from your 12V battery setup.

✔️ Fully mobile.
✔️ Car-ready.
✔️ Session-approved.

Tested by the VAS Audio team.
We’ve put it through its paces using a 280Ah LiFePO4 battery powering a full FAYA system at medium volume.

• 1st hour: 94%
• 2nd hour: 88%
• 3rd hour: 80%

Estimated playtime:
• Up to 5 hours full volume on FAYA
• Up to 10 hours on the FAYA Starter

✔ 12V 4000W voltage converter with digital display

✔ DC connection cable approx. 60cm

✔ Operating instructions with wiring diagram

❌ Battery not included.

Tested with a 280Ah LiFePO4 battery. Suitable for lithium, lead, gel, or AGM battery types.

• Compatible with Simba and Faya sound systems
• Converts 12V DC battery power to 230V AC (50 Hz)
• Delivers up to 4000W output power
• Compact and road-ready (8kg)
• Certificates: Converter, CE, RoHS; E8 production according to DIN ISO 9001:2000
• Suitable for LiFePO4 (lithium), lead, gel or AGM batteries

• 5W–20W: Mobile phone, siren unit, USB chargers
• 20W–60W: Audio preamp, headphone amp, Raspberry Pi FX unit
• 60W–120W: DJ controller, turntable (Technics 1210 uses ~11W), CDJ
• 100W–200W: Laptop, audio interface, effects rack
• 200W–500W: 2-channel mixer, active monitor speaker (small)
• 400W–1000W: Amplifier (mid-range, depending on load), active tops
• 600W–1200W: Kick-bin or upper-bass unit (e.g., Simba Kick or Faya Kick)
• 1000W–1600W: 10” or 12” subwoofer units (Simba/Faya)
• 1600W–3000W: Full Faya/Simba rig with preamp, amp, and playback devices
• 3000W–3500W+: Full sound system with multiple tops, scoops, amp racks, and FX

Notes:

• estimated RMS or continuous draw values, not peak
• Consumption can vary depending on the music genre (e.g., heavy bass vs. ambient), volume level, and ambient temperature.
• FS4000D handles 4000W continuous / 8000W peak, so it's built with headroom to safely run even full systems under real-world stress.

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We offer a two-year warranty on all our products.