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Specification
AmplifierConnectorDescription : Single
Brand : Nobsound
BulletPoint1 : Authentic Hi-Fi Soundstage: Experience the depth and richness of Hi-Fi audio with the Douk Audio vacuum tube amplifier. Designed for music enthusiasts and audiophiles, this amplifier delivers a detailed and warm sound that brings your music to life.
BulletPoint2 : Wireless Bluetooth 5.0 with Remote Control: Stream your favorite music wirelessly using the latest Bluetooth 5.0 technology, which ensures a stable and high-quality connection. The included remote control offers convenient operation from the comfort of your seat, allowing you to manage your audio settings and track playback without needing to physically adjust the amplifier.
BulletPoint3 : Comprehensive Input Options: The amplifier offers a variety of input options, including USB, Coaxial, Optical, and 2 groups of stereo RCA, allowing for seamless connection with a wide array of audio sources. Whether you're playing music from a digital source, turntable, or other devices, the Douk Audio amplifier is ready to deliver exceptional sound.
BulletPoint4 : Headphone Jack for Personal Listening: The 6.5mm headphone jack allows for private, direct audio output to your headphones, providing a personal and immersive listening experience without disturbing others. This feature is perfect for late-night music sessions or when you want to enjoy your audio content without external speakers.
BulletPoint5 : Subwoofer Output for Deep Bass: Enhance your audio experience with the addition of an active subwoofer. The Douk Audio amplifier features a dedicated output for subwoofers, enabling you to achieve powerful, resonant bass that complements your music and other audio content, filling your room with a full and rich sound.
BulletPoint6 : Stylish Design with Superior Craftsmanship: The amplifier's sleek and modern design is not only visually appealing but also built to last. With high-quality materials and meticulous construction, this vacuum tube amplifier is a durable and stylish centerpiece for any home or professional audio setup.
CoaxialDigitalInput : Yes
Color : Black
CompatibleDevices1 : PC
CompatibleDevices2 : CD Player
CompatibleDevices3 : Phone
ConnectivityTechnology1 : Bluetooth
ConnectivityTechnology2 : Aux
ConnectivityTechnology3 : USB
ControlMethod : remote
FrequencyResponseCurve : 20Hz-20KHz ±2dB
IncludedComponents : inc
IncludedComponents1 : 1*Amplifier
IncludedComponents2 : 1*Power Cord
IncludedComponents3 : 1*Remote Control
ItemName : Nobsound A3 Hi-Fi Vacuum Tube Amp 2 Channel Bluetooth Amplifier Receiver for Speakers DAC with Optical USB Input, Subwoofer Output and Headphone Jack, VU Meter, Remore Control for Home Audio System
ItemPackageDimensions_Height : 32.385 centimeters
ItemPackageDimensions_Length : 21.59 centimeters
ItemPackageDimensions_Width : 24.13 centimeters
ItemPackageQuantity : 1
ItemTypeKeyword : audio-component-amplifiers
Manufacturer : Nobsound
Material : PCB＋Aluminum alloy
MaximumSupplyVoltage : 6 volts
ModelName : Walfrontdmry98wgx5
ModelNumber : RF2126
MountingType : Surface Mount
NumberOfChannels : 1
NumberOfItems : 1
OutputPower : 3 watts
OutputType : Speaker Binding Posts
OutputWattage : 70 watts
PartNumber : A3
ProductDescription : Warm Tips
6.35mm headphone output with priority, please make sure the headphone has been disconnected if you want the speaker and low-frequency output.
Please note the USB input does not support macOS.

Parameters
Audio input: Bluetooth 5.0 / Coaxial / Optical / USB(PC-USB/U-disk) / 2 groups of RCA
Audio output: Speaker Jacks / 6.5mm Headphone Jack / Low-frequency output(connect to active subwoofer)
Optical/Coaxial sampling rate: 16Bit/48KHz
USB sampling rate: 32bit/192kHz
U-disk support format: MP3/WAV/FLAC/APE/WMA
USB support max capacity: 128G
Tubes: 13P1P×2+6P16A×2
Headphone impedance range: 16-300Ω
Output power: 35W+35W
Output impedance: 4-8Ω
Frequency response: 20Hz-20KHz ±2dB
SNR: ≥80dB
THD: ≤0.5%
Dimensions(W*D*H): 163*253*175mm / 6.42*9.96*6.89in
Package dimensions(W*D*H*): 350*220*240mm/13.78*8.66*9.45in
Net weight: 3.5kg/7.72lb
Package weight: 4.5kg/9.92lb

Packing List
1*Amplifier
1*Power Cord
1*Remote Control(without battery)

ProductSiteLaunchDate : 2023-05-25T06:19:17.439Z
SignalToNoiseRatio : 80 decibels
SpecificationMet1 : CE
SpecificationMet2 : FCC
SupplierDeclaredDgHzRegulation : not_applicable
SupportedInternetServices : Pandora
SurroundSoundChannelConfiguration1 : 2
SurroundSoundChannelConfiguration2 : 2.1
TotalSubwooferOutputs : 1
TotalUsbPorts : 1
TunerTechnology : FM
UnitCount : 1
UnspscCode : 52161547
Voltage : 110 volts
WarrantyDescription : 12-Month Warranty
WirelessCommunicationTechnology : Bluetooth