PAC 100W Step down Isolation Toroidal Voltage Converter 240V To 110V/120V & 100V Power Transformer for US & Japan
In Stock : Dispatched within 24 Hours from Adelaide
Power Rating: 100W Continuous
The PAC STIS-100 is an ultra-compact, audiophile-grade 100W isolated toroidal step-down transformer designed to safely run low-draw 120V US/Canadian and 100V Japanese phono stages, DACs, vintage preamps, CD decks, and precision electronics on Australian 240V mains. Engineered with true physical galvanic isolation to completely eliminate ground loops, 50Hz mains hum, and EMI line noise, it features dual dedicated outlets (1 x 100V, 1 x 120V) and is rated for 100W continuous 24/7 duty with panel fuse and thermal overload protection. Backed by PAC's 2-Year Australian Replacement Warranty.
PAC Toroidal Voltage Converters — Ultra-Compact Galvanic Isolation for Sensitive Low-Draw Audio & Electronics
Deliver dead-silent, completely isolated AC power to your imported 100V Japanese and 110V–120V North American low-draw electronics with the PAC 100W Isolated Toroidal Step-Down Transformer (SKU: STIS-100).
Standard step-down converters share a common neutral and ground wire with the Australian mains grid, channeling electrical hash, dimmer buzz, and 50Hz ground hum straight into delicate audio circuitry. The STIS-100 provides true galvanic isolation through physically separated, double-insulated primary and secondary copper windings. This completely severs ground loops, achieves an inaudible noise floor, and shields sensitive vintage Hi-Fi components from mains surges.
Key Features:
- True Galvanic Isolation: Physically separated copper windings eliminate ground loops and stop 50Hz mains hum in sensitive phono stages and preamps.
- Whisper-Quiet Toroidal Core: Precision-wound toroidal transformer delivers dead-silent operation without mechanical vibration.
- Dual Output Outlets: Features 1 x 100V (optimised for Japanese Hi-Fi equipment) and 1 x 120V (North America) for simultaneous or dedicated use.
- 100W Continuous Duty: High-purity copper windings engineered for 100 Watts continuous 24/7 duty.
- Dual Layer Electrical Protection: Protected by an accessible panel fuse and internal automatic thermal cutoff.
- Compact & Portable: Small footprint designed to sit neatly behind Hi-Fi racks, audio consoles, or workbenches.
- Standard Australian Plug: Connects into any standard 10A domestic wall outlet.
- Australian Standards Compliant: ACMA and EESS Responsible Supplier registered for Australian electrical safety.
- 2-Year Replacement Warranty: PAC commercial-grade engineering supported locally in Australia.
Technical Specifications (STIS-100)
| Specification | Details |
| Brand | PAC (Power and Compressions) |
| Model / SKU | STIS-100 |
| Transformer Type | Isolated Toroidal Step-Down Transformer |
| Continuous Rating | 100 Watts (24/7 continuous duty) |
| Input Voltage | 230V – 240V AC, 50Hz |
| Input Connection | Standard Australian 3-pin SAA plug & cord (standard 10A wall plug) |
| Output Voltages | 1 x 100V (Japan) + 1 x 120V (USA/Canada) |
| Output Sockets | Universal high-retention sockets (accepts 2-pin, 2-pin polarized, and 3-pin plugs) |
| Protection | In-Line Fuse Protection & Internal Thermal Cutout |
| Dimensions (L x W x H) | 19.0 x 15.0 x 12.5 cm (approx. casing size) |
| Net Weight | ~2.8 – 3.2 kg |
| Housing | Compact powder-coated steel enclosure with top handle |
| Warranty | 24 Months Replacement Warranty |
Appliance Compatibility & Sizing Guide
| Appliance / Audio Equipment | Typical Voltage & Draw | Compatibility | Technical Requirement |
|---|---|---|---|
| Phono Preamps, DACs & Turntables (Technics, Pro-Ject, Denon, Sansui 100V/120V) | 100V / 120V (5W – 40W) | Ideal / Recommended | Physical galvanic isolation removes ground hum and microphonic noise on sensitive audio signals. |
| Vintage Japanese Tuners & CD Players (Sony ES, Kenwood, Marantz 100V/120V) | 100V–120V (15W – 45W) | Fully Compatible | Clean voltage delivery without line noise interference. |
| US Precision Shavers & Trimmers (Wahl, Panasonic, Braun 120V) | 120V (10W – 30W) | Fully Compatible | Operates safely within low continuous rating. |
| Power Amplifiers, Game Consoles, or Kitchen Appliances (Exceeding 100W) | 100V–120V (150W – 3000W) | Not Compatible | Requires our larger STIS-300, STIS-600, STIS-1200, STIS-2400, or STIS-3000 models. |
Frequently Asked Questions (STIS-100)
Q: Why is an isolation transformer better than a standard compact step-down converter for audio gear?
A: Standard plug-pack converters and autotransformers share an electrical path with household mains, channeling high-frequency noise from LED lights, appliances, and chargers into your sound chain. The PAC STIS-100 incorporates physically separated copper windings (galvanic isolation), cutting the ground path entirely and providing a dead-silent background for sensitive phono preamplifiers, DACs, and turntables.
Q: How is the STIS-100 protected against overloads?
A: The STIS-100 is equipped with dual protection: an easily accessible panel fuse that guards against sudden short-circuits and current spikes, combined with an internal automatic thermal cutout that prevents transformer core overheating.
Q: Can I run Japanese 100V and US 120V devices at the same time?
A: Yes. The STIS-100 features dedicated 1 x 100V and 1 x 120V outlets. Both can be used simultaneously as long as the total combined wattage of connected devices does not exceed 100 Watts continuous.
Q: What warranty and local support are provided?
A: The STIS-100 is backed by PAC's 2-Year Australian Replacement Warranty and complies with ACMA and EESS electrical safety standards.
| Sendle Length | 1 |
|---|---|
| Sendle Width | 1 |
| Sendle Depth | 1 |
Up-Sell Products
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PAC 300W Step Down Isolation Toroidal Voltage Converter 240V To 110V/120V & 100V Power Transformer AU to US & Japan
Special Price $123.00 Regular Price $246.00
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