Specification AgeRangeDescription : Adult AudioInput : XLR AudioOutputMode : Stereo Brand : FiiO BulletPoint1 : Power Supply: Electricity is the mother of sound, so special attention was paid to optimize the FiiOK9 Pro ESS Desktop DAC and Amplifier’s power supply to ensure excellent sound. The FiiO K9 Pro ESS’s linear power supply, with its low-frequency transformer and 4 massive 4700uF capacitors, makes sure that the rest of the system gets abundant clean power BulletPoint2 : THX AAA 788+ Chips: The THX AAA 788+ chips used in the FiiOK9 Pro ESS Desktop DAC and Amplifier provide exemplary details and dynamics no matter if you are using low or high-impedance headphones BulletPoint3 : Precise Design: Fully differential signals go through the DAC, volume adjustment, and amp for a truly balanced design. Such a design ensures minimal interference between different components in order to fully maintain all details and large dynamic swings in music for unmatched sound quality BulletPoint4 : Fully Differential, Fully Balanced Design: The PCB of the K9 Pro ESS uses a partitioned layout, wherein not only the power supply and signals are separated, but the analog signal loop is also put in an independent section, guaranteeing the integrity of the audio signal being processed. Every audio signal goes through a mammoth 6-stage circuit to reproduce music as faithfully and as detailed as possible BulletPoint5 : Indicator Lights: The RGB indicator lights surrounding the volume knob can light up differently depending on the currently playing sampling rate BulletPoint6 : Note: When you insert headphones with a microphone into the CD-2 adapter, the microphone on the headphones will be temporarily unavailable, which is a normal state of incompatibility. However, CD-2 is compatible with the original microphone on devices such as mobile phones and computers Color : Gunmetal green CompatibleDevices : In-Ear Monitors (IEMs) CompatibleDevices1 : Cellphones CompatibleDevices2 : Tablets CompatibleDevices3 : Laptops CompatibleDevices4 : Gaming Consoles CompatibleDevices5 : Various systems including Android, iOS, Windows, Mac, and devices like phones, computers, tablets, laptops, audio players, and car audio systems. ConnectivityProtocol : USB ConnectivityTechnology : Wireless ControllerType : Battery Powered ControlMethod : touch ControlType : Media Control CustomerPackageType : Standard Packaging DataLinkProtocol : Bluetooth DataTransferRate : 384 KHz EarpieceShape : over-ear ExternallyAssignedProductIdentifier : 6953175790167 ExternallyAssignedProductIdentifier1 : 6953175710240 ExternallyAssignedProductIdentifier2 : 06953175710240 ExternallyAssignedProductIdentifier3 : 0663961054934 ExternallyAssignedProductIdentifier4 : 0663961054071 ExternallyAssignedProductIdentifier5 : 00663961054934 FrequencyResponse : 20 KHz HardwareInterface : bluetooth Hazmat1 : LITHIUM ION BATTERIES PACKED WITH EQUIPMENT Hazmat10 : DE_SmallLithiumIonBatteryWithEquipment Hazmat11 : EG_SmallLithiumIonBatteryWithEquipment Hazmat12 : ES_SmallLithiumIonBatteryWithEquipment Hazmat13 : FR_SmallLithiumIonBatteryWithEquipment Hazmat14 : GB_SmallLithiumIonBatteryWithEquipment Hazmat15 : IE_SmallLithiumIonBatteryWithEquipment Hazmat16 : IN_SmallLithiumIonBatteryWithEquipment Hazmat17 : IT_SmallLithiumIonBatteryWithEquipment Hazmat18 : JP_SmallLithiumIonBatteryWithEquipment Hazmat19 : MX_SmallLithiumIonBatteryWithEquipment Hazmat2 : UN3481 Hazmat20 : NL_SmallLithiumIonBatteryWithEquipment Hazmat21 : PL_SmallLithiumIonBatteryWithEquipment Hazmat22 : SA_SmallLithiumIonBatteryWithEquipment Hazmat23 : SE_SmallLithiumIonBatteryWithEquipment Hazmat24 : SG_SmallLithiumIonBatteryWithEquipment Hazmat25 : TR_SmallLithiumIonBatteryWithEquipment Hazmat26 : US_SmallLithiumIonBatteryWithEquipment Hazmat27 : ZA_SmallLithiumIonBatteryWithEquipment Hazmat28 : 9 Hazmat3 : II Hazmat4 : AE_SmallLithiumIonBatteryWithEquipment Hazmat5 : AU_SmallLithiumIonBatteryWithEquipment Hazmat6 : BE_SmallLithiumIonBatteryWithEquipment Hazmat7 : BR_SmallLithiumIonBatteryWithEquipment Hazmat8 : CA_SmallLithiumIonBatteryWithEquipment Hazmat9 : CN_SmallLithiumIonBatteryWithEquipment HeadphonesEarPlacement : in_ear HeadphonesFormFactor : Connect wired HeadphonesJack : 3.5/4.4mm Impedance : 32 ohm IncludedComponents : User Manual InterfaceType : USB InterfaceType1 : RCA InterfaceType2 : 4.4mm balanced InterfaceType3 : Optical InterfaceType4 : XLR InterfaceType5 : Auxiliary IsWaterproof : FALSE ItemName : FiiO K9 Pro ESS Desktop DAC and Amplifier, Precise Design, Fully Differential, Fully Balanced Design, RGB Indicator Lights ItemPackageDimensions_Height : 36.4 centimeters ItemPackageDimensions_Length : 15.7 centimeters ItemPackageDimensions_Width : 33.1 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : headphone-amps Manufacturer : FiiO Material : Metal ModelName : CD-2 Headphone Amplifier ModelNumber : K9ProESS MountingType : Plug Mount NoiseControl : active_noise_cancellation NumberOfChannels : 8 NumberOfItems : 1 NumberOfLithiumIonCells : 6 NumberOfPins : 7 NumberOfPowerLevels : 2 OutputConnectorType : XLR, 1/4 TRS PartNumber : K9ProESS PowerSourceType : Corded Electric ProductDescription : Power supply to ensure excellent sound Features low-frequency transformer Uses THX AAA 788+ chips Can produce an undistorted 1100mW Can produce undistorted 2100mW under a 32 ohms load Ensures minimal interference between different components PCB of the K9 Pro ESS uses a partitioned layout Audio signal goes through a mammoth 6-stage circuit Six-stage audio circuit, to reveal every last detail RGB indicator lights light up differently as per sampling rate ProductSiteLaunchDate : 2023-02-07T09:41:55.000-08:00 RecommendedUsesForProduct : Music RecommendedUsesForProduct1 : Music RecommendedUsesForProduct2 : Gaming RecommendedUsesForProduct3 : Recording RecommendedUsesForProduct4 : Travel Sensitivity : 111 decibels SeriesNumber : 800 Size : Go Pod SpeakerSize : 3.5 millimeters SpeakerType : Computer SpecificUsesForProduct : Audio Enhancement SpecificUsesForProduct1 : Music SpecificUsesForProduct2 : Gaming SpecificUsesForProduct3 : Movie Style : Modern SubjectCharacter : CD-2 Headphone Amplifier SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredDgHzRegulation1 : not_applicable SupplierDeclaredDgHzRegulation2 : not_applicable SupplierDeclaredDgHzRegulation3 : not_applicable SupplierDeclaredDgHzRegulation4 : not_applicable SupplierDeclaredDgHzRegulation5 : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 SurroundSoundChannelConfiguration : 2.0 TargetGender : unisex Theme : Video Game Theme1 : Music Theme2 : Video Game Theme3 : Game Theme4 : Movie UnitCount : 1 UnspscCode : 52161547 WarrantyDescription : 1 Year Manufacturer WarrantyType : Limited WaterResistanceLevel : not_water_resistant WirelessCommunicationTechnology : No