Trantec SJ66-BK (HM-66) Fitness Headset Microphone, 3.5mm Locking Jack - Black
The Trantec SJ66-BK is a Super Cardioid Condenser Fitness Headset Microphone built specifically for sports and aerobics instructors, featuring sweat-resistant construction, a flexible 4mm gooseneck for precise placement and efficient noise cancellation.
The Trantec SJ66-BK has been designed specifically with the sports and aerobics industry in mind, built to withstand the everyday rigours of an active lifestyle where a standard headset microphone simply would not survive.
Whether worn during high-intensity aerobic classes, spinning sessions, gym floor instruction or any other physically demanding fitness environment, the SJ66-BK provides the durability, sweat protection and audio performance that fitness professionals rely on session after session.
Sweat-Resistant Construction
The SJ66-BK's construction offers a high degree of protection against the ingress of sweat — one of the most common causes of headset microphone failure in fitness instruction environments. This makes it a genuinely practical and cost-effective long-term investment for studios, gyms and fitness facilities where microphones are in regular daily use and exposed to the inevitable moisture of an active class environment.
Precise Placement & Noise Cancellation
A 4mm diameter flexible gooseneck allows the condenser capsule to be precisely positioned and held firmly in place throughout even the most vigorous movement — ensuring consistent microphone placement and a reliable, stable audio signal throughout the session. The super cardioid electret condenser capsule is highly efficient at noise cancellation, helping to prevent feedback and minimise interference from crowd noise, music and other ambient sound sources in busy fitness environments. With a frequency response of 20Hz to 16kHz and a maximum SPL of 125dB, the SJ66-BK delivers clear, natural vocal reproduction across the full range of the human voice.
Compatible with Trantec S4.10W Systems
The SJ66-BK connects via a 3.5mm locking screw jack connector, making it compatible with the Trantec S4.10W beltpack transmitter and other compatible wireless systems using the same connector type. The 1500mm cable provides ample length for comfortable routing from the headset to the beltpack during use.
Trantec SJ66-BK Key Features:
- Purpose-Built for Fitness Instruction: Designed specifically for sports and aerobics professionals requiring a durable, reliable headset microphone for daily active use.
- Sweat-Resistant Construction: High degree of protection against sweat ingress for long-term reliability in fitness and sports environments.
- Super Cardioid Electret Condenser Capsule: Efficient noise cancellation to minimise feedback and interference from crowd noise and ambient sound.
- 4mm Flexible Gooseneck: Precise and stable microphone placement throughout vigorous movement and activity.
- 20Hz–16kHz Frequency Response: Clear, natural vocal reproduction across the full range of the human voice.
- 125dB Maximum SPL: Handles high sound pressure levels without distortion.
- 3.5mm Locking Screw Jack Connector: Secure connection to compatible beltpack transmitters including the Trantec S4.10W system.
- 1500mm Cable Length: Ample cable length for comfortable routing from headset to beltpack.
- 3000 Ohm Nominal Impedance: Compatible with a wide range of beltpack transmitter inputs.
-
Low Current Consumption: 50uA for efficient operation within compatible wireless transmitter systems.
Specifications:
View our shipping and delivery information below. All prices include VAT.
Important notice for non-UK orders: Any order being shipping outside of the UK will incur an import tax. See below for more information.
Cut-off Times
Orders must be placed before 3:30pm to guarantee same-day dispatch. Any orders placed after this time are not guaranteed to be shipped the same day, and are more likely to be shipped the next working day.
To guarantee Saturday Delivery, orders must ideally be placed before 2pm.
We operate during office hours, Mon-Fri, 9am - 5pm, and are closed during the weekend.
Orders placed over the weekend or Friday after cut-off will be processed and shipped the following Monday (or Tuesday during bank holidays).
Mainland UK Delivery Charges
Note: Next-day services are classed as working days (Mon-Fri) and do not include weekends. Please choose Saturday delivery if you require the item over the weekend.
Please also note orders with a high number of boxes may be subject to an additional charge.
All delivery options will be available at the checkout stage. Please ensure you add a mobile number to your order for tracking information.
Offshore & International
We ship to Scottish Highlands, Islands, Ireland and the EU. Please see the table below for base prices. Please note that these prices are subject to change based on the number of boxes.
The following postcodes fall under 'Highlands & Islands', and are subject to the above rates/lead time.
- Scottish Highlands: FK17-21, IV1-39, IV52-54, IV63, KW1-14, PA21-40 (excluding PA38), PH19-26, PH30-41, PH49-50
- Scottish Islands: HS1-9, IV40-51, IV55-56, KA27-28, KW15-17, PA20, PA38, PA41-49, PA60-78, PH42-44, ZE1-3
If a UK Mainland next-day service is selected at checkout, please be aware that it won't be sent on that service.
If you require a next-day service to Northern Ireland and the highlands, get in touch so we can assist further.
EU Import Tax
Any goods shipped outside of the UK, over a certain value, will incur an import tax. The cost and rate will depend on the country and the order value.
This is a legal requirement and MUST be paid prior to delivery in order to receive your goods. You will be contacted by the courier once the order is dispatched to pay the fee.
Failure to pay import tax when applicable will result in the order being shipped back to Audio Volt. Any returned goods sent back to us due to non-payment of import tax are NOT ELIGIBLE for a refund on the shipping charge.
You can obtain an import duty estimate here.
Delivery Notes
On delivery, you must inspect the goods carefully for damage as Audio Volt is unable to accept responsibility for damage in transit, shortage of delivery or loss of products unless the customer advises Audio Volt of such within three working days from the date of delivery.
60 Day Returns Policy
We ask that you follow these guidelines to help us process your return as quickly and efficiently as possible:
- Please keep your order reference to hand. This confirms your original order and gives us the necessary details to authorise the product's return.
- Contact our Customer Services Team on 02476 369890 (or email info@audiovolt.co.uk). We will then send you an RMA number and a returns form, which needs to be completed and sent back with the returned item(s).
- If the order has been unpacked, re-package it to ensure that it is being returned in its original condition. Please make sure all items relating to the product are returned, including manuals and cables.
- When returning an item, please obtain a proof of postage receipt from the courier.
Returned items must be mailed within 10 days of when the RMA number has been issued. Items received with a post date 30 days after your requested return will NOT be eligible for refund.
Please note: our returns policy is quite straightforward, but there are a number of conditions that we ask our customers to comply with before applying:
- It is your responsibility to request a return. If you don't tell us you want to make a return, we don't know. Once you do tell us, we will do everything we can to action it.
- If you have not requested a return within 60 days of receiving an order, we will assume that you are intending to keep it, and we will not authorise a return.
- We always refund the payment according to how the original purchase was made and aim to do so within 72 hours of the return being received by us.
- Returned goods are liable for a restocking fee of 15% towards handling and repackaging if the order is not returned in its original, unopened packaging. This charge will be subject to our inspection of the returned goods.
- Delivery charges will not be refunded unless the delivered goods are faulty.
- Replacement products are dispatched immediately after the returned goods have been received and accepted by Audio Volt.
- Items that develop a fault within 30 days of delivery are eligible for a replacement or a refund. Delivery costs are also reimbursed for faulty items. Please contact our Customer Services Team on 02476 369890 if you believe your item has developed a fault.
Finally, please remember that notifying us of your intention to apply for a return, saving the delivery paperwork and keeping the order in its original packaging will help both you and Audio Volt to process the return quickly.
Any Questions?
If you have any questions about our returns policy, please telephone us on 02476 369890 or email us at info@audiovolt.co.uk.
We operate during office hours, Mon-Fri, 9am - 5pm, and are closed during the weekend.
