Unique output design and independent control: 4.0 channel can be divided into two groups of 2.0 channel outputs, and the volume of each group can be adjusted separately. And specailly design a low frequency output to connect active subwoofer, very convenient to build 2.0/2.1/4.0/4.1 channel system. Rated 45W × 4 output power: supporst speakers with 4-8 ohm impedance, easily to drive most home & car & boat speakers, can give your entertainment system a boost, with unrivaled sound superiority and lets you enjoy high quality amplified audio. Multiple audio inputs: besides Bluetooth5.0/stereo RCA/3.5mm AUX inputs, which can be compatible with ipad, cellphone, MP3 player, CD player, dataplay, computer, decoder, etc. Also with USB(U-disk)/SD Card/MMC Card inputs, easily to enjoy high-quality los Add to Favorites Seller Join newsletter New Arrival Ending Soon View Feedback About Us Contact Us View All Categories Nobsound & Douk Audio Add-on Items US Warehouse UK Warehouse DE Warehouse AU Warehouse Digital Amplifier Tube Amplifier Audio Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Audio Player Music Spectrum & Clock Empty Chassis Record Player & Turntable Part Power Supply Vacuum Tubes Hi-Fi Speakers Hi-Fi Cable Transformer Radio Communication Audio Accessories Other Home Feedback Save Seller New Listed Ending Soon Contact us Store Category Nobsound & Douk Audio Add-on Items US Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other UK Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Record Player & Turntable Part Audio Board & DIY Kit Audio Accessories Other DE Warehouse Add-on Items Digital Amplifier Tube Amplifier Hi-Fi Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Audio Processor Music Spectrum & Clock Aluminum Chassis Record Player & Turntable Part Audio Board & DIY Kit Radio Communication Audio Accessories Other AU Warehouse Add-on Items Amplifier Preamp & Phono Stage Headphone Amplifier DAC & Audio Adapter Audio Splitter/Switcher Music Spectrum & Clock Audio Accessories Other Digital Amplifier Multi-Function Mono Channel 2.0 Channel 2.1 Channel 4.0 Channel 5.1 Channel Tube Amplifier DIY Kit Hybrid Amplifier Mini Tube Amplifier EL34 Tube Amplifier KT88 Tube Amplifier 300B Tube Amplifier Other Tube Amplifier Audio Amplifier Mini Amplifier Integrated Amplifier Power Amplifier Audio Board & DIY Kit Preamp & Phono Stage Tube Preamp Digital Preamp Phono Preamp Passive Preamp Audio Board & DIY Kit Headphone Amplifier Mini Headphone Amp Desktop Headphone Amp Portable Headphone Amp Tube Headphone Amp DAC & Audio Adapter Audio Adapter USB DAC Bluetooth Receiver/Transmitter Digital Interface Audio Board & DIY Kit Audio Splitter/Switcher Speaker Switcher Bluetooth & XLR & MIC 2 Way 3 Way 4 Way Multiple Way Audio Processor Guitar Effects Equalizer Audio Mixer Noise Isolator Audio Player Digital Player Record Player CD Player Portable Player Music Spectrum & Clock Analog VU Meter Tube Sound Level Meter LED Sound Level Meter VFD Audio Spectrum LED Clock Nixie Tube Clock VFD Tube Clock IPS Nixie Clock Oscilloscope Tube Clock Board & DIY Kit Other Empty Chassis Small-sized Medium-sized Large-sized Personalized Record Player & Turntable Part Set-up Transformer Record Weight & Clamp Cleaning Kit Scale Gauge Platter Mat Dust Cover Needle Other Power Supply Linear Power Supply Switching Power Supply Power Supply Filter USB Charging Hub Board & DIY Kit Vacuum Tubes Shuguang Tube PSVANE Tube Tube Socket Tube Tester Probe Hi-Fi Speakers Frequency Divider Speaker Unit Hi-Fi Cable RCA Audio Cable 1/8 & 1/4 Stereo Jack Cable Speaker Cable USB Cable Optical Fiber Cable Conversion Cable Dock Cable Other Transformer Toroidal transformer Output Transformer Other Radio Communication Tesla Coil Transmitter & Receiver Signal Generator Antennas & Tuners Shortwave Radios Ham Amateur Radio Audio Accessories Volume Controller Mount Stand Bracket Feet & Pads Op Amp Headphone Current Meter Other Other Join Our Newsletter Receive our email newsletters about new items and special promotions! Sign Up Now ! Mini 4.0 Channel Digital Amplifier w/ Bluetooth for Home/Car/Marine Speaker 45W Item description Features Unique output design and independent control: 4.0 channel can be divided into two groups of 2.0 channel outputs, and the volume of each group can be adjusted separately. And specailly design a low frequency output to connect active subwoofer, very convenient to build 2.0/2.1/4.0/4.1 channel system. Rated 45W × 4 output power: supporst speakers with 4-8 ohm impedance, easily to drive most home & car & boat speakers, can give your entertainment system a boost, with unrivaled sound superiority and lets you enjoy high quality amplified audio. Multiple audio inputs: besides Bluetooth5.0/stereo RCA/3.5mm AUX inputs, which can be compatible with ipad, cellphone, MP3 player, CD player, dataplay, computer, decoder, etc. Also with USB(U-disk)/SD Card/MMC Card inputs, easily to enjoy high-quality lossless music at home or on the road. Perfect design with powerful function: with volume knob, treble and bass control, easy to get more delicate sound. Designed LED display to clearly show the working status in real time, and euipped with remote control, much easier to use, very suitable for indoor and outdoor audio system use. DC 12V-14V working voltage suits many places: beside used in home desktop audio system, it also can be used in your car, your boat, your RV, your golf cart—anywhere you need a great amplifier with low distortion and acoustically accurate reproduction of music. Parameters Audio input: Bluetooth / USB(U-disk) / stereo RCA / 3.5mm AUX / SD & MMC Card Audio output: raw cable speaker jacks / low frequency output (connect active subwoofer) Bluetooth version:5.0 Number of channel: 4.0 (also support 2.0/2.1/4.1) U-disk/SD/MMC supported formats: MP3 / APE / FLAC / WMA /WAV Max. capacity of U-disk/SD/MMC: 64G Max output power: 45W×4 Speaker impedance: 4-8Ω Frequency reponse: 20Hz-20KHz Distortion: <0.4% SNR: ≥80dB Treble and Bass control: supported Remote control: supported Working voltage: DC 12V-14V Dimensions(W*D*H): 175*123*44mm / 6.89*4.84*1.73in Net weight: 520g / 1.15lb Package weight: 900g / 1.98lb Warm tips: For safer and faster delivery, the remote control may not include batteries (CR2025 3V), please prepare it by yourself. Packing List 1*S-299 Amplifier 1*DC 12V Power Adapter 1*Remote Control(without batteries) Payment Fast Shipping Return Policy About us Contact us Payment Safe and secure payment by PayPal. Fast Shipping The items are located in US, and will be shipped within 1 working day, 2-6 working days to deliver. Return Policy Free Return Within 30 Days We provide free return with 30 days for all items you bought on eBay, full refund and return shipping will be provided. 1-year warranty is provided for all items(Excluding: 1. Man-made damage or misuse. 2. Audio accessories and consumables such as vacuum tubes). If you are satisfied with our products and service please leave a 5-star . Feedback is very important to us just like our lives, please DO contact us before you leave a neutral or negative feedback, we will provide better solutions until you are satisfied. About us Douk Audio / Nobsound Studio was founded in 2013 in Shenzhen CHINA, we own several brands including Douk Audio / Nobsound / Little Bear etc. As a professional audio company, we are dedicated to design and produce the best products at the lowest prices to make HiFi affordable. We will spare no efforts to bring great products and service for customers and extremely to improve our customers listening experience. Contact us Please don't hesitate to contact us if you have any questions or comments about our items. And our working time is from Monday to Friday between 9:00 am to 06:00 pm(Beijing Time), which means we can keep on-line at: Working time Beijing(CN)Monday-Friday09:00 AM - 18:00 AMNew York(US)Sunday to Thursday08:00 PM - 05:00 AMLondon(UK)Monday-Friday01:00 AM - 10:00 AMParis(FR)Monday-Friday02:00 AM - 11:00 AM During holiday, please allow us to response you early next week. Please don't leave any negative / neutral feedback or make dispute/claim on our non-working time, thank you for your understanding and cooperation. Home Feedback Save Seller New Listed Ending Soon Contact us