Passive HiFi Stereo Preamp Audio Booster Volume Controller for Power Amplifier

$159.99 Buy It Now or Best Offer
free,30-Day Returns

Seller Store doukmall
(57934) 99.4%,

Location: shenzhen
Ships to: US,
Item: 274692700951

Restocking Fee:No
Return shipping will be paid by:Buyer
All returns accepted:Returns Accepted
Item must be returned within:30 Days
Refund will be given as:Money Back
Douk Audio:Douk Audio
MPN:GFJ673
Number of Channels:2
Type:Hi-Fi Amplifier
Audio Inputs:Stereo L/R RCA
Audio Outputs:Stereo L/R RCA
Color:Gold & Silver & Black
Features:Analog
Number of Inputs:1
Number of Outputs:1
California Prop 65 Warning:NO
No:No
Surround Sound Formats:NO
Supported Modes:NO
Power:NO
Receiver Combo Features:NO
Unit Quantity:1
Unit Type:Unit
Country/Region of Manufacture:China

Passive preamp, suitable for the audio signal input such as mobile phone, computer, CD/MP3/MP4 player, LP and other media streaming players so on, and match power amplifiers, active speakers and some monitor audio devices very well with lossless sound quality. 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 ! Passive HiFi Stereo Preamp Audio Booster Volume Controller for Power Amplifier Item description Warm tips: Default 10K:10K impedance version, if you want other impedance ratio version please leave a message. Features Passive preamp, suitable for the audio signal input such as mobile phone, computer, CD/MP3/MP4 player, LP and other media streaming players so on, and match power amplifiers, active speakers and some monitor audio devices very well with lossless sound quality. Inspired by winding process of classic audio transformer, and we have made much improvement after precision calculation and testing, adopting 10K:10K permalloy transformer, the signal is boosted by 2 times, even can replace the active preamp. The measured frequency response of transformer is 10Hz-100KHz(-0.2DB) and 20Hz-50KHz(0.1DB). High-quality components are used to ensure perfect performance and long time stable work: Permalloy transformer made of E25 sheet with ultra-high inductance, ultra-low leakage inductance and small distributed capacitance. Primary and secondary inductances are around 1100H to 1600H. Japan APLS 27-type duplex potentiometer(with smaller error, higher precision, lower noise, longer service life, and more smooth rotating feelings) to control the volume. US CMC816 gold-plated pure copper RCA terminals for lossless transmision, solid aluminum alloy knob and so on. Mini size with exquisite appearance, cast aluminium chassis and aluminum alloy knob looks very textured and high-end. Notice: The voltage is magnified 2 times, but the volume is not 2 times larger, the volume and voltage are logarithmic relations. The passive preamp should not be too close to the power amplifier and power transformer to prevent the magnetic field and electric field from interfering with Permalloy and generating hum noise. Parameters Audio input: stereo L/R RCA Audio output: stereo L/R RCA Dimensions (W*H*D): 164*94*35mm / 6.45*3.70*1.37in Net weight: 650g / 1.43lb Package weight: 850g / 1.87lb Packing List 1× Passive Preamp Payment Delivery details Return Policy About us Contact us Payment Safe and secure payment by PayPal. Delivery details Please leave VALID TELEPHONE NUMBER which is necessary and very important. Customs Clearance We are NOT responsible for any customs duties fee. We are NOT responsible for any import tax or customs delay. Most item will be shipped within 2 working days. For package less than 2KG, we use Airmail (10-25 days to most countries) and for package over than 2KG we use Expedited Service such as DHL, UPS and FEDEX (5-8 days to most countries). Return Policy Free Return Within 30 DaysWe provide return within 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

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