Specification Brand : Marantz BulletPoint1 : MP3 lossless decoder player module with high quality, onboard 2W single channel power amplifier BulletPoint2 : MP3 decoder board support TF card and USB, U disk playback mode with the speaker terminals BulletPoint3 : MP3 player audio module support MP3 format, playing power on automatically, LED indocator light when module is working BulletPoint4 : MP3 decoder board convenient to wire and refit, 4 buttons on the board for setting operation BulletPoint5 : Packing included:3pcs MP3 lossless decoders with amplifier MP3 decoder board with bluetooth module dc 5v power supply Color : Black CompatibleDevices : Laptop ComponentType : Amplifier ConnectivityTechnology1 : Bluetooth ConnectivityTechnology2 : USB ExternallyAssignedProductIdentifier1 : 747192141110 ExternallyAssignedProductIdentifier2 : 0747192141110 IncludedComponents : [3pcs MP3 Decoder Player Module, Amplifier, Bluetooth Module] ItemName : Marantz Model 50 Pure Analog (70 Watt x 2) Stereo Integrated Amplifier (Black) ItemPackageDimensions_Height : 52.07 centimeters ItemPackageDimensions_Length : 24.765 centimeters ItemPackageDimensions_Width : 52.07 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : audio-component-amplifiers Manufacturer : Marantz Material : Stainless Steel MaximumSupplyVoltage : 120 volts MediaType1 : Micro SD MediaType2 : USB MemoryStorageCapacity : 8 GB MinimumSupplyVoltage : 110 volts ModelName : mp3 decoder ModelNumber : MODEL50 MountingType : Freestanding NumberOfBoxes : 1 NumberOfChannels : 2 NumberOfItems : 1 OperatingTemperature : 33 degrees_celsius OutputPower : 3.99 watts PackageLevel : unit PartNumber : MODEL50 ProductDescription : Features: 1.Support MP3 format, playing power on automatically, playing state red LED indicator update. 2. Support U disk (be tested by 32G), TF Card (be tested by 16G) play mode; power on default TF card mode, if the TF card does not exist automatically jump to the U disk, and two kinds of equipment are installed, you can manually set the playback mode, please look at the key operating instructions. 3. Keys can be adjusted up and down track switch, volume + -, pause / play, mode switching, for details please see the key operating instructions. 4. Can be set button single /whole song ," default power up the whole song cycle, replacing the circulating mode by pressing the "Repeat" key. Instructions: The "Prev/V--" key : " short press "is switching to"the last song ,"long press" is for "volume decreasing" The "Next++" key : " short press "is switching to"the next song","long press"is for"volume increasing " The "P/P/Mode" key :"short press"is switching to "play / pause", " long press"is U disk and TF Card mode's selection The "Repeat" key :"short press" is switching cyclically "single / song" (no press function) Note: 1 "long press" time is about 2S. 2 If you use U disk mode, some suggestions of 5V power supply, some U disk doesn’t support 3.7V power supply. Specifications: Power range: 3.7-5.5V Dimension: 45mm*36mm Packing included: 3*MP3 lossless decoders with amplifier MP3 decoder board with bluetooth module ProductSiteLaunchDate : 2023-10-24T04:21:17.327Z SkipOffer : 1 SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 SupplyCurrent : 0.4 amps SupportedStandards : MP3 UnitCount : 5 UnspscCode : 52161500 Voltage : 117 WarrantyDescription : 3 year manufacturer Wattage : 50 WirelessCommStandard : bluetooth