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2 Year
$499.99
3 Year
$649.99
5 Year
$949.99
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Review Summary
Accidents happen. Protect your favorite Adorama products and purchase a protection plan to stay covered from accidental damage, mechanical or electrical failures, and more.
If we can’t fix it, we’ll replace it at no additional cost.
Protect your product from drops, spills, and more.
Enjoy your gear without fear. We have you covered!
When regular use of your product over time results in mechanical or electrical failure.
We will never charge you a deductible after the purchase of a plan.
Our claims process is simple & easy and our customer service team is happy to help.
Adorama Protect powered by Extend is available for purchase to customers in the United States. Not available for international or U.S. territories purchases. Plans on open box items do not cover pre-existing damage.
Adorama Protect plans are available for ABS clients. If you have any questions or require assistanse, please call 800-223-2500
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Black/Silver with silver legends on the front, white legends on the back
Standard 19" Rack, one EIA rack space high, 1/2 space wide
1-2 units can be mounted in a single rack space with optional RPK 005 (single) or RPK 006 (double) Rack Mount Kits
Desktop Style Transformer (TFP 062); Input: 100-240 VAC, 50/60 Hz. IEC Line Cord; Output: 24 VDC, 750 mA, 18W. 2.5mm ID center positive barrel connector
Push On/Push Off latching power button, backlit green indicates power ON, backlight off indicates power OFF, fading from bright to dark indicates Sleep Mode
Operating: 32 to 104 Degree F (0 to 40 Degree C)
Storage: -4 to 158 Degree F (-20 to 70 Degree C)
3.12" High Resolution OLED display with selections via buttons. Hosted Web page. Remote control and monitoring
RJ-45 on back of unit supports CAT 5e cable lengths up to 328 feet (100 meters); 10/100 Base-T IEEE 802.3 compliant, unique MAC address
FCC, RoHS3, WEEE, Industry Canada
72.1-75.9 MHz , 17 wideband channels (selectable)
+/- 2 ppm stability, 0-50 Degree C
+/- 75 kHz maximum
75 microsec
Does not exceed 80 mV/m at 3 m
ANT 005, ANT 021, ANT 024, or ANT 025
Up to 1000' (304m) with ANT 005 coaxial antenna mounted on rear chassis connector
(1x) 10-32 stud connector in center of unit (pcb mounted)
(1x) F-connector on rear chassis
1 Green LED On Air Indicator
Full, Medium, Low or OFF indiacted by menu icon.
30 min. duration, 4 hr. duration, or Always On selected via menu. Starts when audio is below -18 dB level with no button pressed for selected duration
DSP based
Compression: 1:1, 1.5:1 or 2:1
High-pass and Low-pass Filter Frequency control
31-16000 Hz, +/-3 dB (re: 1 kHz, +/-3 dB) ("Music" Audio Preset)
67 dB (typical) Transmited RF
Less than 0.25% @ 1 kHz (RF output)
Greater than 57 dB @ 1 kHz, Mic or Line
(1x) Combination 3-pin XLR, 1/4" (TRS) jack for balanced or unbalanced line level, or balanced or unbalanced microphone with selectable phantom power
In menu, adjustable to 0 to -50 dB, in 1dB steps
14.4 VDC applied through 2.2 kOhms resistors to analog combo jack: Pin 2 and Pin 3 on XLR jack, or tip and ring on 1/4" TRS jack
10-LED array that reads -18 to +9 dB at 3 dB intervals. 7 Green, 2 Amber, and 1 red LED. Green LEDs indicate normal operating audio level peaks, Amber LEDS indicate close to overload peaks, Red LED indicates overload peaks
1/4" TRS stereo jack, mono signal, 14.85 mW at +9dB, maximum in 33 O (level adjustable in menu 0 to -40 dB in 2 dB steps)
RCA jack (black), -10 dBV (.32 VRMS)
Output impedance 100 Ohms at +9dB
Nominal (1st Amber LED): -55 dBV (1.7 mV RMS)
Overload Warning (Displayed on Screen): -15 dBV (180 mV RMS)
Absolute Max. Rating: +20 dBV (10.0 V RMS)
Nominal (1st Amber LED): -25 dBV (55 mV RMS)
Overload Warning (Displayed on Screen): +16 dBV (6.3 V RMS)
Absolute Max. Rating: +20 dBV (10.0 V RMS)
8.45 x 8.25 x 1.72" (21.5 x 21 x 4.4cm)
3.2 lb (1.45kg)
Black/Silver. Black ABS Plastic case with Aluminum faceplate
2 AA Alkaline or 2 AA NiMH Rechargeable
2 AA non-rechargeable alkaline batteries (BAT 001-2), approx. 50 hrs.
2 AA rechargeable NiMH batteries (BAT 026-2), 1500mAh, approx. 32 hrs.
52 mA nominal
32 to 122 Degree F (0 to 50 Degree C)
17 Wideband, accessed via menu
72.1, 72.2, 72.3, 72.4, 72.5, 72.6, 72.7, 72.8, 72.9, 74.7, 75.3, 75.4, 75.5, 75.6, 75.7, 75.8, 75.9 MHz
75 kHz
75 microS
1" OLED
Power button, backlit green. Good battery strength - glows solid. Low battery -flashes
2 microV at 12 dB Sinad with squelch defeated
100 mV
200 Hz - 15 kHz, +/-3dB
FM, +/- 75 kHz peak deviation
Minimum 65 dB @ 1.0V
Integral with earphone/headphone cord
35 mW max at 16 O
3.5mm stereo jack, mono output for stereo or mono earphones/headphones
Stereo,earbud-type with foam cushion, 3.5 mm plug, 32 O
Enters sleep mode after approximately 3 minutes of no RF signal
FCC, Industry Canada, RoHS, WEEE
4.1 x 2.85 x 1.38" (104 x 72 x 35mm)
4.6 oz (130g) (With batteries)
2.6 oz (73g) (Without batteries)
Around-ear speaker
3.5mm mono
39" (99.06cm)
23mm
32 Ohm
20 - 20 kHz
30 mW
118 dB @ 1kHz
0.5 oz (15g)
Black
18.5" (46.9cm)
3.5mm mono plug
8-16 Ohms
500 mW max
25 mW input at 1000 Hz produces 1.7 A/m 6" above the center of loop
85microW input produces 0.1 A/m (IEC Standard)
RoHS, WEEE
1.5 oz (42.5g)
10.37 x 6.25 x 0.13" (26.3 x 15.8 x 0.31cm)
When it comes to providing an inclusive audio experience, the FM 558-24 Plus Large Area Dual FM and Wi-Fi Assistive Listening System stands out. This advanced system integrates the professional WaveCAST Wi-Fi audio server technology into a Williams Sound FM assistive listening system. This integration allows users to listen through either a traditional FM receiver or their own smartphone using the WaveCAST Listening App.
The FM T55 Transmitter, a key component of the system, is built on a professional digital audio (DSP) platform, ensuring exceptional audio quality. This transmitter is designed to cater to those who prefer using their own smartphones and headphones for a discreet listening experience, as well as those who favor a traditional assistive listening system with a dedicated FM receiver and headset.
The FM Plus supports both iOS and Android WaveCAST Apps, in addition to all current and legacy Williams Sound FM Receivers operating on the 72-76 MHz bandwidth. Users can easily adjust settings via the front panel interface or the hosted web interface. Please note, this version is not Dante compatible.
The PPA R38N Receiver, another integral part of the system, features a high-resolution OLED screen for a quick view of receiver status and immediate access to all user settings. It offers on-screen channel selection with easy access to 17 pre-set, wideband frequencies (72-76 MHz). This receiver is compatible with a variety of Williams Sound transmitters and offers digitally synthesized audio for exceptional clarity and stability.
The system also includes the EAR 022 Surround Earphone, an around-ear speaker earphone known for its excellent sound quality. It is compatible with all Williams Sound Receivers and Pocketalkers.
The NKL 001 Neckloop, designed to magnetically couple the audio output from a Williams Sound unit into a hearing aid equipped with a T-Coil, adds another layer of accessibility. It also features an integrated safety breakaway device for user safety.
Lastly, the package includes the IDP 008 ADA Wall Plaque, a self-adhesive wall plaque that informs patrons of the availability of a hearing assistance system. This makes the FM 558-24 Plus Large Area Dual FM and Wi-Fi Assistive Listening System an ideal choice for venues like theaters and auditoriums.