Description
The SF-PA100A is a Format-A compatible audio power amplifier designed to convert a selected Format-A audio pair into a mono constant voltage output. It delivers up to 100 watts RMS into 70 V or 100 V distributed speaker systems. The unit is engineered for continuous duty and professional AV installations.
Key features include a three-position selector to choose Pair A, Pair B or Pair C from the Format-A input, loop-through RJ45 output for daisy-chaining additional receivers, and a remote level control option via RJ45. The amplifier uses a high-efficiency Class D output stage to minimize heat and maximize reliability. A selectable compressor adds up to 15 dB of headroom while remaining aurally transparent.
Performance is tuned for installed audio systems with a frequency response of +0/-3 dB from 50 Hz to 20 kHz and THD+N under 1% at full rated power. Input gain is set with a rear-panel single-turn potentiometer and monitored by a dual-LED VU meter calibrated to 10 dB below maximum output. The SF-PA100A also incorporates thermal and short-circuit protection to safeguard the amplifier and connected speakers.
Connectivity is centered on Format-A RJ45 I/O for signal and power distribution plus a REMOTE CONTROL RJ45 jack that accepts RDL D-RLC10KM wall controls, a 10 kΩ potentiometer, or a 0 to 10 Vdc control voltage. The included external power supply accepts 100 to 240 Vac and provides 48 Vdc to the module. Format-A signal pairs and power pass through the LOOP OUT jack to feed additional modules or amplifiers.
The SF-PA100A is well suited to paging, background music, and distributed audio systems in commercial venues that require constant voltage amplification. Its selectable compressor, VCA remote control capability, and loop-through topology simplify multi-zone deployments and system expansion. Plenum rating per UL 2043 supports installation in air-handling spaces.
Installation and operation are simplified by a compact all-metal enclosure that supports free-standing, surface, or rack-mounted use. An internal VCA enables long-term noise-free level adjustment, and front-panel LEDs provide status, output level, and Format-A power indication. The amplifier ships with the required external 48 Vdc power supply for immediate integration into field systems.
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
