Two Passive Direct Box w/ Ground Left-Attenuator Switch

You know the drill: your keyboard sounds great through your amp, but when you plug into the house system, you get ground loop hum loud enough to wake the dead. These SA-DI1 passive direct boxes solve that problem and a bunch of others you run into when connecting unbalanced gear to professional mixing consoles.

Each DI box takes your high-impedance unbalanced signal—whether it's coming from your guitar, keyboard, or DJ mixer—and converts it to a low-impedance balanced XLR output that mixers love. The three-position attenuator switch is where these really shine: 0dB for most instruments, -20dB for hot keyboards and active pickups, and -40dB for line-level sources like DJ mixer outputs. No more overloading console inputs or dealing with distorted sound.

The parallel output is clutch for live situations where you need to feed both your amp and the mixing console simultaneously. Your signal stays clean over long cable runs thanks to that balanced 600-ohm XLR output, and the ground lift switch kills hum when you're dealing with different pieces of equipment that don't play nice together electrically.

These work everywhere: worship bands connecting multiple keyboards to the house system, DJs interfacing consumer mixers with venue sound systems, or any situation where you need to bridge the gap between unbalanced instruments and professional audio gear. The steel construction means they'll survive your gig bag, van floor, and whatever else your setup throws at them.

Bottom line: If you're tired of hum, signal level mismatches, and the headache of connecting consumer gear to pro sound systems, this pair gives you two reliable boxes that just work.

Technical Specifications

• Model: SA-DI1 (2-Pack)
• Type: Passive Direct Box
• Attenuator Switch: 0dB, -20dB, -40dB
• Instrument Input: 50K ohm unbalanced TS jack
• Parallel Output: 50K ohm unbalanced TS jack
• Balanced Output: 600 ohm balanced XLR jack
• Ground Lift: Switchable
• Construction: Solid steel
• Dimensions: 4.75" x 3" x 1.75"
• Warranty: One year
• Recommended For: Live sound, DJ systems, worship bands, studios

Frequently Asked Questions

When do I use each attenuator setting?

Start with 0dB for guitars, basses, and most instruments. Switch to -20dB if you're getting distortion with hot keyboards or active pickups. Use -40dB for line-level sources like DJ mixer outputs or if you're taking signal from an amp's speaker output—this prevents you from overloading the mixing console.

Will these work for connecting my DJ setup to venue sound systems?

Absolutely. This is one of their most common uses. Connect your DJ mixer's main outputs to the DI inputs with TS cables, then run XLR cables from the DI outputs to the venue's console. Start with -20dB and adjust if needed—most DJ mixers put out enough level to benefit from some attenuation.

Do I need active or passive DI boxes for my rig?

These passive boxes handle 99% of what musicians throw at them—guitars, keyboards, DJ mixers, anything with decent output level. You'd only need active DI boxes for really low-output sources like some acoustic pickups or ribbon mics. If your instrument can drive an amp, it can drive these.

What cables do I need to make these work?

Standard TS instrument cables from your gear to the DI inputs, and balanced XLR cables from the DI outputs to your mixer. If you want to use the parallel outputs to feed an amp simultaneously, you'll need another TS cable for that connection. Nothing exotic—just the cables you probably already have.