NUX PDI-1G Guitar Direct Box – Phantom/9 V Powered DI | NUX
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NUX PDI-1G Guitar Direct Box
Convert instrument-level signals to balanced mic level with studio-grade clarity—on stage, in rehearsal, or in the studio.
Key Features & Benefits
- High-impedance ¼″ input optimised for guitar, bass or line signals, preserving tone before conversion.
- Selectable speaker-cabinet simulation lets you send amp-like character direct to FOH or recording interface—no microphone needed.
- 48 V phantom or 9 V DC power for maximum flexibility with mixers, audio interfaces or pedalboards.
- Ground-lift switch eliminates hum and buzz caused by ground loops in complex stage rigs.
- Parallel (thru) output feeds your backline amplifier while the balanced XLR feeds the console.
- Input level switch (–20 / 0 / +20 dBu) matches everything from passive pickups to hot amp outputs without clipping.
- Wide 10 Hz – 40 kHz bandwidth and THD+N below 0.06 % ensure transparent, high-fidelity signal transfer.
- Rugged steel chassis measuring only 121 × 80 × 55 mm and weighing 350 g—built for daily gig abuse.
- Low-noise design with –110 dBu noise floor keeps recordings clean even at high-gain mixer settings.
Overview
The NUX PDI-1G is an active direct-injection box created for guitarists, bassists and audio technicians who need consistent, studio-quality signal conversion in a durable, travel-ready package. It converts your instrument’s high-impedance, unbalanced output to a low-impedance, balanced XLR feed—ideal for long cable runs and noise-sensitive environments. A front-panel cabinet-simulation switch can emulate a miked 4×12 enclosure, giving engineers a ready-to-mix tone without stage microphones.
Performance & Connectivity
A three-position input-level selector accommodates everything from passive single-coils to powered amp heads, while the thru jack preserves your onstage backline sound. The balanced XLR output is powered either by console phantom power or a standard 9 V pedal-supply, making the PDI-1G equally at home on silent stages and traditional rigs.
Design & Construction
The enclosure is fabricated from powder-coated steel for optimal shielding and road-worthy resilience. Recessed switches resist accidental knocks, and the compact footprint slots neatly between pedals or at the foot of your amp.
Use Cases & Applications
• Silent stage setups where cab simulation replaces loud amplifiers.
• Home-studio re-amping: run an amp head into the PDI-1G, capture the balanced output and monitor through the parallel speaker cab.
• Touring rigs needing ground isolation between backline and front-of-house mixers.
• Live-stream guitar performances requiring direct, low-noise feeds into audio interfaces.
• Bassists converting instrument output to mic level for FOH while retaining cabinet monitoring.
What's Included
• NUX PDI-1G Guitar Direct Box
• Quick-start leaflet
• Limited one-year warranty card (manufacturer)
Complete Technical Specifications
Electronics
- Input Impedance: 1 MΩ (Hi-Z)
- Input-Level Switch: –20 dBu / 0 dBu / +20 dBu
- Max Input Level: +48 dBu
- Frequency Response: 10 Hz – 40 kHz (–1 dBu)
- THD+N: 0.055 % @ 100 Hz
- Noise Floor: –110 dBu
Power
- Power Options: 48 V phantom or 9 V DC (centre-negative)
- Current Draw: 6.5 mA
I/O
- Input: ¼″ TS
- Parallel Out: ¼″ TS
- Balanced Out: XLR male
- Controls: Ground-Lift switch; Cab-Sim switch; Input-Level selector
Physical
- Dimensions: 121 × 80 × 55 mm (L × W × H)
- Weight: 350 g
- Housing: Powder-coated steel
Why Choose the PDI-1G?
Many entry-level DI boxes lack cabinet simulation or require phantom power exclusively. The PDI-1G offers both phantom and 9 V options, adds selectable cab-sim, and provides an input-level switch normally found only on higher-priced units. At just over fifty dollars, it outperforms simple passive DIs and rivals premium models at double the cost.
Frequently Asked Questions
Is the PDI-1G truly passive or active?
The signal path is transformer-isolated, but active buffering requires either 48 V phantom power or a 9 V adapter to enable the cabinet-simulation circuit.
Can I run an amplifier head’s speaker output into the PDI-1G?
Yes—use the input-level selector at –20 dBu and route the parallel out to your cabinet while the XLR feeds the mixer.
Does the cab-sim affect the parallel output?
No. The cab-sim is applied only to the balanced XLR output; the thru jack remains unaffected.
Will 24 V phantom power operate the unit?
No. The minimum phantom-power requirement is 48 V for full functionality.
Is a power supply included?
A 9 V adapter is not included; most users rely on console phantom power or an existing pedalboard supply.
