Description
The DS-HA1A is a compact Format-A stereo headphone amplifier designed to receive stereo audio and 24 Vdc power over a single twisted-pair RJ45 connection. It provides a 3.5 mm mini-jack headphone output and a user-accessible level control for immediate adjustment. The unit is built with an all-steel Decora style panel and a rear enclosure for discrete wall or cabinet mounting.
Key features include high common mode rejection on the input, a low-noise stereo headphone amplifier, and RJ45 loop-thru capability to daisy-chain additional Format-A receivers. The front panel offers a single-turn volume control and an unobtrusive headphone jack with no illuminated indicators to prevent disturbance in dark environments. The amplifier delivers 25 mW per channel into 100 ohms while maintaining very low distortion.
Performance specifications include a frequency response of 10 Hz to 40 kHz (±1 dB into 100 ohms), THD+N less than 0.01% at 1 kHz (10 mW), noise below -90 dB at maximum gain, and excellent crosstalk performance. The DS-HA1A requires 24 Vdc at 30 mA provided over the Format-A twisted pair link. These metrics ensure clear, low-distortion headphone audio suitable for critical listening in installed environments.
Connectivity is provided through two rear-panel RJ45 jacks that accept RDL Format-A signals and power. Either RJ45 jack can be used as the input while the other serves as a loop-thru output to connect another receiver or module. The left and right audio channels are received on Format-A pairs B and C and are routed to the stereo mini-jack output.
Typical applications include bedside and restroom listening stations in hospitality installations, discrete listening points in multi-room audio systems, and compact installations where shielded cable routing is impractical. The unit’s compact Decora footprint and steel construction make it suitable for wall-mount or cabinet installations where reliability and appearance matter. The lack of front-panel illumination reduces distraction in guest-room settings.
Installation is straightforward using standard twisted-pair cabling and a compatible Format-A sender to provide both audio and power. The DS-HA1A includes an automatically resetting fuse to protect the power input and supports loop-thru configurations for economical multi-point deployment. The product combines simple installation, robust construction, and reliable audio performance to meet common installed-audio requirements.
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
