IsoSmart 1 Channel Transformer DI Box – Balanced Audio Isolator - Ground Loop Eliminator
Multibuy discounts calculated at checkout
- Buy 5 for £71.25 each and save 5%
- Buy 10 for £67.50 each and save 10%
- Buy 15 for £63.75 each and save 15%
- Buy 20 for £60.00 each and save 20%
Fixes ground loop hum and unwanted noise in audio setups. This passive transformer DI box provides true galvanic isolation for clean, stable signal transfer. Works with balanced XLR and jack connections across line and instrument levels. Built in the UK with Neutrik connectors for reliable performance.
Fixes ground loop hum and unwanted noise in audio setups. This passive transformer DI box provides true galvanic isolation for clean, stable signal transfer. Works with balanced XLR and jack connections across line and instrument levels. Built in the UK with Neutrik connectors for reliable performance.
The IsoSmart 1 Channel Transformer Isolator DI Box is a compact, high-performance solution for eliminating ground loops, reducing noise, and ensuring clean signal transfer in professional audio, broadcast, and AV systems.
Each unit is fully hand wired in the UK, using carefully selected components and built with attention to detail that automated assembly simply doesn’t offer. Designed for reliability in real-world applications where consistency and signal integrity matter.
Why This Unit?
Fully hand wired in the UK – every unit individually assembled and tested
Consistent build quality with attention to grounding and signal path integrity
No automated mass-production shortcuts
Built using professional-grade components throughout
Wiring Notes
Balanced XLR input and output
Transformer isolated signal path (no direct electrical connection between input and output)
Ground lift switch disconnects signal ground (Pin 1) between input and output
Chassis is bonded to the male XLR for effective shielding and noise rejection
Internal wiring is hand assembled using Van Damme cables
Fully passive design – no power required
Key Features
Fully hand wired in the UK
Transformer isolated balanced signal path
Ground lift switch for resolving hum and ground loops
Chassis bonded to output XLR for optimal shielding
Passive operation – no power required
Compact and rugged die-cast enclosure
Professional Neutrik connectivity throughout
Wide frequency response with minimal signal degradation
Standards & Compliance
Built using professional-grade components
Designed for pro audio, broadcast, and AV environments
Fully hand wired in the UK – Built to Order
Bottom Line
This isn’t a generic off-the-shelf box.
It’s properly assembled, hand wired in the UK, with correct grounding, quality components, and a signal path designed to solve problems cleanly.
It just works — which is exactly the point.
| Delivery Speed | Next Day delivery available if 'In Stock' |
|---|---|
| Mounting Method | Cable Mount - Feedthrough |
| Contact Material | Silver Plated |
| Number of Contacts | 3 Pole |
| Pack Quantity | Pack of 1 |





