Description
The TX-AT1 is a passive 1:1 audio isolation transformer designed to provide galvanic isolation for 600 ohm line-level signals. It isolates audio circuits to eliminate ground loops and reduce hum while preserving signal integrity. The compact unit is optimized for studio and broadcast line-level applications.
Key features include a studio-quality bifilar transformer winding and terminal-block connections for secure wiring. The transformer provides true 1:1 coupling to maintain level and phase while isolating grounds. It is engineered to drive 600 ohm lines reliably in professional audio environments.
Performance specifications include a measured frequency response of 20 Hz to 20 kHz with +/- 0.1 dB fidelity and very low distortion figures. THD is specified at less than 0.035% from 50 Hz to 20 kHz at a +4 dBu input, with a typical 0.001% reading at 1 kHz. Input/output nominal level is +4 dBu with a maximum handling of +22 dBu and a common-mode rejection ratio greater than 85 dB on balanced inputs at mains frequency.
Connectivity is handled via a terminal block that accepts balanced or unbalanced wiring, enabling straightforward integration into racks or patch panels. The transformer is compatible with standard +4 dBu professional line devices and can be used inline to isolate mixers, preamps, line drivers, and broadcast gear. Its passive design requires no power or active circuitry.
Typical applications include ground-loop mitigation between systems, isolation of long analog runs, and protection of input stages in studio and broadcast installations. The TX-AT1 is suitable for use in control rooms, OB vans, patch bays, and equipment racks where reliable isolation and low distortion are required. It is intended for professional technicians and engineers who need consistent line-level performance.
The unit ships in a compact cardboard box and is rated for ambient operating temperatures from 0 C to 55 C. Its small physical footprint and terminal-block wiring make installation quick and repeatable, and the transformer construction provides long-term mechanical and electrical stability. The TX-AT1 delivers a simple plug-in solution for isolating and protecting analog audio lines.
Free Ground Shipping
We offer free ground shipping on every purchase of $300 and more for US and US territory. Please choose "Free Ground Shipping (UPS/USPS)" option at checkout.
UPS Ground
UPS provides up-to-date tracking information. Ground service takes anywhere from 2-7 working days for delivery depending on destinations. UPS Ground does not deliver on Saturdays, Sundays or Holidays.
USPS Priority Mail/USPS Express Mail
For all shipments shipped via USPS, we offer 'DELIVERY CONFIRMATION' number with each package. Difference between tracking number provided by UPS vs USPS Delivery Confirmation number is: Delivery Confirmation status is updated when the delivery has been made or when the package has made it through major USPS stations.
Air Shipment
Air shipments, Overnight, 2nd day and 3 day select methods offer guaranteed delivery time for your shipment. If you are in hurry or in need for the items on schedule, select one of these methods. Up-to-date tracking information is provided with each Air Shipment. AVProSupply has the right to choose between Air shipments to meet or reduce delivery time. For guaranteed delivery of multiple items with expedited shipping, please contact our customer service representative for personalized assistance to get your items delivered to you when you need them.
International Customers
We offer shipping via USPS/UPS for our international customers. You can find different shipping options during checkout.
Most items ordered from AVProSupply will be shipped out from our California Warehouse. Will-Calls are only allowed with Appointment Only - Please call Customer Service to set one up between the hours of 9am to 6pm PST.
We Offer A 30-Day Money Back Guarantee:
Our main goal is to ensure your complete satisfaction with our service and products. If, for any reason, you are not 100% satisfied with your purchase, you can return it within 30 days of the purchase date for a full refund. Our 30-day money back guarantee applies to all of the products we sell, except for: TVs and monitors 20" and larger, Special Order merchandise, or any item indicated as non-returnable. Shipping is not refundable. Prior to returning your purchase, a Return Merchandise Authorization (RMA) number will be provided to you.
Refunds:
Refunds on returned items will be issued in the same payment form as received from the customer at the time of purchase. Once we receive the product and it passes inspection, we will credit your account. Please allow 3 - 6 business days for a credit to appear on your account.
Exchanges:
If the item was sent back to us for an exchange, please allow 3 - 5 business days for the replacement to be processed.
No Returns/Exchanges on the following:
- TVs and monitors 20" and larger
- Special Order merchandise
- Any item indicated on the website as non-returnable
For more information see our official Return Policy
