Bass Instinct Bi1000 Di Mark III

Unmatched Power, Precision, and Reliability for the Modern Bassist

The Bi1000 Di Mark III represents the newest evolution of Form Factor Audio’s acclaimed Bass Instinct series. Designed and built in California, the Mark III generation preserves the unmistakable Form Factor tone while introducing major advancements in power delivery, engineering efficiency, and international touring capability.

Trusted by touring professionals and session bassists for over a decade, the Bi Series has always been about one thing: delivering clean, authoritative, uncompressed bass tone under any conditions. The Bi1000 Di Mark III continues that legacy at an entirely new level.


All of our amplifiers are covered by a comprehensive 2 year warranty. 

Full Power Across the Entire Bass Range

At the core of the redesign is Form Factor’s Dynamic Power Supply (DPS) — a re-engineered output stage incorporating an expanded capacitor bank. This system allows the Bi1000 Di Mark III to maintain its full 1000-watt RMS output at both 4Ω and 8Ω, without low-end sag or collapsing dynamics.

Where typical Class-D amps struggle to hold power on deep bass notes, the Mark III delivers clean, articulate response from the lowest fundamentals to the highest transients. Your tone stays solid, stable, and accurate no matter how hard you push it.

A More Natural, More Musical Limiter

The updated limiter circuit responds with greater sensitivity and dynamic nuance, allowing players to dig in without unwanted artifacts or abrupt compression. The feel is natural and expressive, giving you more control under demanding live or studio situations.

Tour Ready. Global Ready. Session Ready.

The Bi1000 Di Mark III includes an auto-switching 100–240 VAC universal power supply, ensuring seamless operation anywhere in the world. Whether you're on a fly date, festival stage, cruise ship gig, or cross-continent tour, your amplifier is ready the moment it's powered on.

A proprietary 4/8-ohm selector provides full rated power at either impedance, giving bassists maximum flexibility with any cabinet configuration.

Premium Tone Controls for Professional Shaping

A refined four-band tone stack with a sweepable midrange gives you precise control over every environment—studio, club, or arena. From modern punch to vintage warmth, the Bi1000 Di Mark III adapts instantly.

Controls:

• Gain

• Limiter

• Master

• Mute

• Bass

• Mid

• Mid Frequency Selector

• Treble

Ultra-Lightweight Without Compromise

Crafted from a rugged powder-coated aluminum chassis, the Bi1000 Di Mark III is exceptionally portable at just 6 lbs (2.7 kg) while remaining built for the demands of professional use. Its compact 2.9" × 11.8" × 9.1" footprint fits effortlessly into a gig bag pocket, carry-on, or studio rack.

Professional-Grade Connectivity

Every connection point is top-spec’d for durability and pristine signal transfer.

• 2 × NL4 Speakon™ speaker outputs

• 1 × Powercon™ power input

• 6 × Neutrik ¼" connectors

• 2 × balanced XLR outputs

The DI is clean, quiet, and mix-ready—trusted by engineers for its clarity and consistency.

Why Working Bassists Choose the Bi1000 Di Mark III

• Full 1000W RMS at both 4Ω and 8Ω

• No low-frequency sag or power loss

• Lightweight design with uncompromising strength

• Refined limiter for natural dynamic response

• Universal power supply for worldwide use

• Built in California with premium components

• The legendary Form Factor sound, evolved for modern performance

The New Benchmark for Bass Amplification

The Bi1000 Di Mark III delivers the headroom, clarity, and reliability that working bassists demand—night after night, session after session, anywhere in the world. This is the next step in precision bass amplification.

Power. Stability. Tone. No compromise.

Add the Bi1000 Di Mark III to your rig and experience the difference.

Bi1000Di mkIII SPECIFICATION: