IMPORTANT! Before purchasing, check audio output of your TV/related audio source first, make sure it has red/white jacks labeled as "AUDIO OUT" or "OUTPUT" or "AV OUT”. If you have a smart TV or will be buying one or uncertain which audio out ports your TV offers, SIMOLIO Digital Wireless TV Speaker SM-621D is your best choice which is compatible with almost all TVs. Or you may simply purchase a digital to analog audio converter ( e.g. SIMOLIO SM-DAC01, not included, purchase separately). Please refer to the related video and product comparison table at this page for details.From marketing statistical analysis, if you experience no sound, sound cuts in and out, too much noises, most issues are caused by buying the wrong model or incorrect operation. Pls refer to the user instructions or write to support(at)simolio.com, we are confident to get one good solution for you.These RF products are not available for pacemaker carrier as well as people with severe hearing loss.We do not recommend charging the speaker while using it to avoid swelling the battery. If an AC adapter is used to power the speaker, the battery can be removed. Frequently Asked Questions: Q 1: Why can’t I hear any sound from the speaker after connecting all the cables well? Ensure you connect the transmitter to the red/white ports labeled “AUDIO OUT” of your TV/other audio source;For some TVs, you may have to activate the TV audio out by changing the TV’s AUDIO OUT setting to "External TV Speakers". Use your TV remote to go to the TV setting menu, select Audio and follow the instructions in your TV user manual.If you're using a digital to analog audio converter (DAC) to set up your Simolio unit with your TV/related AV devices, ensure to set the TV/related AV devices audio out format to “PCM".Please adjust the volume of TV and TV related AV device (e.g., TV, cable box, STB) to a sufficient level.Place the transmitter as far as away from built-in Wi-Fi devices esp. Wi-Fi router to avoid interference.Check if you can hear any sound by plugging a normal wired headphone directly into the TV audio out. Or check the quality of your Simolio unit through your iPad/PC etc. Q 2: Does the Simolio speaker mute the tv sound? Can others in my family hear the TV while I use the SIMOLIO unit? This is a TV feature and its availability depends on your TV design. Please check your TV manual or contact the manufacturer to ask whether the TV speakers can work or not when the audio output is activated.For most TVs, the TV's internal speakers and an external audio device can work simultaneously. Such as, for some newer LG TVs, when do RCA audio connection, you can set the “Sound Out” to “Internal TV Speaker + Headphones”. And for some newer Samsung TVs, you can enable this feature by selecting “TV Speaker” from the TV Sound Output lists.However, for some old TV models , the built-in speakers might not work if you choose to use an external audio device (e.g., speaker, headphone). If your TV is like this and you only watch programs from one fixed AV device, such as cable box or STB etc, just hook up the Simolio unit to that device for enjoying TV with your family together. Latest 2.4GHz Digital Automatic FHSS tech promises super sound reproduction, no need pairing, no delay, no interruption when people passing by. Easy to use, just plug and play. It’s stronger signal can go through ceilings or walls, you can sit at any position or take it walk around in your home to hear the TV programs.Voice Highlighting Tech: reduce background sound of TV, increase the sound of dialogues, so that hard to hear words can easily stand out.Auto Signal Control: adjust the sudden increasing volume and make the audio output stable, which prevents the user's hearing from being damaged by loud voice.Tone Control (Treble/Normal/Bass): customize your personalized sound effect according to your hearing. All above points can ensure you to hear the TV dialogues effectively, no need to only depend on the volume increasing for helping to understand the TV conversations. Brings clear TV sound next to you. This portable wireless TV sound box is ideal for seniors or the hearing impaired individuals who struggle to find the optimum volume level on their TV. It is also a great choice for those who are used to watching late night TV shows by plugging the unique designed anti-dropping headset into the speaker while the TV is on mute. Never missing your favorite TV programs with the SIMOLIO wireless TV speaker system! The lightweight and portable design plus the convenient handle and built-in rechargeable lithium-ion battery allow you to take it anywhere in your home, even in another room to enjoy TV. Used as a Normal Wired Speaker As an added feature, the speaker receiver can be independently used as a wired speaker for PC, Laptop, Mobile phone, iPad, MP3 etc. Super Big Volume Knob Makes Operation Easy; TONE (Treble/Normal/Bass) Control Enhances Clarify of TV Sound The big knob with one dial operation of ON/OFF and volume control in the centre area of the speaker makes you operate the speaker by your fingertips easily. The TONE switch is specially designed to deliver improved dialog clarity for people who have different sound frequency sensitiveness. Select Treble to enhance female voice and kids’ voice, select Bass to enhance male voice. Rechargeable & Replaceable Battery / Two User-friendly Charging Solutions / Intelligent Power Saving The built-in rechargeable Li-ion battery supports about 5~6 hours continuously working. It can be replaced easily. (our store has replacement batteries on sold) The transmitter is also a charging base for the speaker, and it includes a second AC Adapter that can plug into the speaker for charging as well as power supplying. For power saving, if there is no audio signal within 5 minutes, the transmitter will automatically enter the standby mode. TV/TV Related AV Devices' Connectivity There are many pairs of red and white RCA jacks on the back of the TV /AV devices, but what we need must be labeled as AUDIO OUT/OUTPUT/AV OUT. Connect to the 3.5mm audio out jack of your TV, which is usually a headphone port will disable your TV’s internal speakers, not suitable for watching TV with family, it’s better to try this function by a wired headphone before ordering. But if you have already has an external home stereo connected to the TV, then you don’t have to worry about this problem. If you have a smart TV with only Optical output, or will be buying one in the future, please choose the SIMOLIO digital wireless speaker (SM-621D). For TVs with only Coaxial output, you will need to purchase a DAC for installation. For TVs with only HDMI (ARC) audio out, you will need to purchase an HDMI to RCA converter for installation. For AV receivers with a 6.35mm phone jack at the front, you will need to purchase a 6.35mm to 3.5mm audio adapter for installation. TV Sound Out Setting Different TV manufacturers have their own definitions for the TV’s sound out. To make your SIMOLIO unit work well with your TV system, please check the sound out setting of your TV first. If your TV only support single sound out, the TV’s speakers will be either automatically muted when you plug something into an audio out port (AUX, RCA, etc.) or they become disabled once you choose "External Speakers" as your TV's audio output. In this case, you can hook up the SIMOLIO unit to your other TV related AV device, such as cable box or purchase a sound bar + splitter for enjoying TV with your family. The menus for sound out setting are not the same from different TV brands. please refer to your TV manual for details. TV & TV Related AV Devices' Volume Setting Sufficient sound output is needed to ensure Simolio working properly. VOL.1 > 40%, VOL.2 > 30%, just for your reference. The bigger the VOL.1 and VOL.2, the better the S/N (Signal-to-Noise) of your Simolio unit. Usually we suggest to fix the VOL.1 to a sufficient level, and adjust VOL.2 to control TV's volume. If the audio output signal is too weak, it will cause the following problems: no sound from the speakerthe sound of the speaker cuts in and outthe speaker automatically shuts off every few minutes Analog Wireless TV Headphone SM-823 Pro Digital Wireless TV Headphone SM-823D Pro Digital Wireless TV Headphone SM-824D1 Digital Dual Wireless TV Headphone SM-824D2 Digital Wireless TV Headphone SM-825D Pro Digital Wireless TV Speaker SM-621D Buying Options Add to Cart Add to Cart Buying Options Add to Cart Add to Cart Customer Reviews 4.0 out of 5 stars 1,711 4.0 out of 5 stars 351 4.2 out of 5 stars 1,734 4.3 out of 5 stars 2,146 4.0 out of 5 stars 1,253 4.2 out of 5 stars 2,339 Price — no data $99.99$99.99 $124.99$124.99 — no data $79.99$79.99 $119.99$119.99 2.4GHz Wireless Technology ✓ ✓ ✓ ✓ ✓ ✓ Style and Weight Under-Chin Style -2.04oz Under-Chin Style -2.04oz Under-Chin Style -2.04oz Under-Chin Style -2.04oz Over-ear Design - 9.38oz Speaker - 35oz Operation Range 100ft / 30m 100ft / 30m 100ft / 30m 100ft / 30m 100ft / 30m 100ft / 30m Continuously Working Time 5~7 hours 5~7 hours Not Limited Not Limited Not Limited Not Limited Key Features Most Affordable Most Popular & Digital Connections With Extra Charging Slot and Spare Battery, Most Popular & Digital Connections With Extra Charging Slot and Spare Battery, ​Digital ​Connections & 2 ​Headsets USB Charging & Spare Battery & & Digital Connections With Extra AC Adapter & Additional Under-Chin Design Wired Headset, Digital ​Connections Analog Connectivity ✓ ✓ ✓ ✓ ✓ ✓ Digital Connectivity X ✓ ✓ ✓ ✓ ✓