JTS SIEM-111 Stereo In Ear Monitoring System (638-662 MHz or 520-544 MHz)
JP-SIEM111KITBZ
$1,199.00 $1,499.00
This system operates in either the 638–662 MHz or 520–544 MHz frequency range. To learn which frequencies will operate best in your area, please use the ACMA Channel Finder at http://channelfinder.acma.gov.au/.
The original JTS SIEM‑101 in‑ear monitoring system was based on the reliable PLL wireless technology used in the US‑series wireless microphone systems, bringing high‑quality stereo in‑ear monitoring to an affordable price point. The updated SIEM‑111 builds on that foundation with improved performance, durability and features. This system includes the transmitter, receiver and IE‑1 earpieces, with an optional upgrade to IE‑6 earpieces.
Warranty: 12 Months
- 961 selectable UHF channels
- Up to 16 SIEM‑111T transmitters can operate simultaneously on the same stage
- 4 groups, each with 16 compatible preset channels
- All‑metal construction on both SIEM‑111T transmitter and SIEM‑111R receiver
- Advanced circuitry ensures excellent signal‑to‑noise performance
- IE‑1 earphones include JTS Dyna‑Driver earbuds and three sizes of silicone sleeves
| Carrier Frequency Range | 638–662 MHz or 520–544 MHz |
| RF Output Power | 10 mW |
| Nominal Frequency Deviation | ±40 kHz |
| Audio Input Impedance | 20 kΩ |
| Nominal Input Level | ‑10 dBV / 0 dBV (ATT ‑10 dBV) |
| Maximum Input Level | 10 dBV / 20 dBV (ATT ‑10 dBV) |
| LCD Display | AF Level, Stereo/Mono, Attenuation, Group, Channel, Frequency |
| Audio Input Connector | 2 × Balanced XLR / 6.3 mm combo |
| Audio Output Connector | 1 × 1/8" stereo jack, 1 × 1/4" stereo jack |
| Loop Out | 2 × Balanced Loop Out |
| Power Supply | 100–240 V switching power supply |
| Input Level Select | 0 dB / ‑10 dB |
| Earphone Output | 60 mW |
| Minimum Load Impedance | 16 Ω |
| LCD Display | RF Level, Lock‑On, Battery Gauge, Stereo/Mono, HF Booster, Limiter, Group, Channel, Mute, Frequency |
| Output Connector | 1/8" stereo jack |
| Power Supply | 2 × AA batteries |
| Operating Time | Over 12 hours |
| Frequency Response | 20 Hz–18 kHz |
| Transducer Type | Dynamic |
| Impedance | 16 Ω |
| Sensitivity | 114 dB/mW @ 1 kHz |
| Max Input Power | 150 mW |
| Distortion | <0.3% |
| Cable Length | 148 cm |
| Weight | 6 g (excluding cable) |
| Connector | Gold‑plated 3.5 mm stereo |
| Accessories | Three silicone sleeve pairs (S, M, L) |
Click here to download pages 1–12 of the SIEM‑111 Owner’s Manual.
Click here to download pages 13–22 of the SIEM‑111 Owner’s Manual.
Click here to download pages 23–26 of the SIEM‑111 Owner’s Manual.
Order weight is calculated on whichever of the dead (actual) or volumetric weight is the greatest. As of 21/5/26, shipping is capped for orders up to 15 kg to most areas.
For orders under $100, Standard Postage is $13.50.
For orders from $100 to $1,000, Express Shipping is $22.
Orders over $1,000 ship for free*.
Express Shipping covers one delivery attempt, so please provide an address where someone is available to sign for courier delivery between 9 am and 5 pm weekdays. You may request that the parcel be left in a safe place, but if anything happens to the parcel, neither we nor the courier company can be held responsible. Work addresses are a great delivery option — if using a work address, please include the business name.
Vinyl records are packed in rigid LP mailers with corner protection and internal padding to prevent damage in transit.
For full details, please see our Shipping Details page.
* Free or capped shipping does not apply to Australian remote island locations, some mainland remote locations (outside Darwin NT and Perth WA metro areas), or destinations outside Australia. If you are unsure whether your address qualifies, please contact us before placing an order.
Got questions about ordering? Whether it's pricing, payment options, delivery times, or warranty details — we've got you covered.
Head to our FAQ page for quick answers to the most common queries.
