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Mini 1:2 Step-up Transformer Stereo Audio Passive Preamp for Phone/PC/CD Player

Item description

Features

  • Multiple connections: passive preamp, with XLR and RCA input and output, suitable for audio source devices such as mobile phones, computers, decoders, digital players, CD players, etc. Supports connection with various types of amplifiers, making the usage more flexible.

  • Excellent improvement effect: Adopting an extreme audio isolation transformer and based on a highly magnetic permalloy core, achieving lossless signal coupling output; Eliminating noise harmonics in audio signals significantly reduces distortion during signal amplification, resulting in a pure and delicate sound quality effect.

  • Premium construction materials: Adopting German WBT silver-tin welding process, American CMC gold-plated RCA terminals, NEUTRIK gold-plated XLR sockets and other high-quality components, effectively reducing signal loss and ensuring high-fidelity audio transmission.

  • Exquisite appearance: The appearance is simple and atmospheric, suitable for use with audio systems, with signal phase switching function, precise correction of audio phase, and enhanced on-site three-dimensional positioning accuracy.

Parameters
 
Model
 S1(Silver) S2(Black)
Audio input XLR / RCA Balanced XLR / RCA
Audio output XLR / RCA Balanced XLR / RCA
Ratio-voltage 1:1 1:1/0.6
Ratio-impedance 680Ω:600Ω 680Ω:600Ω/300Ω
Frequency response 20Hz-40kHz(±0.55dB)
Distortion ≤0.05%(1V RMS @20Hz-20KHz)
Input dynamics ≥2.2V（RMS@20Hz-40kHz)
Dimensions(W*D*H) 130*110*53mm 130*110*70mm
Net weight 1.4kg 1.44kg
Package weight 1.7kg
1.74kg
Packing List
  • 1 × Passive Preamp(Optional)
Safe and secure payment by PayPal.
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). 

Free Return Within 30 Days

We 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 StarStarStarStarStar. Positive feedback rating Feedback is very important to us just like our lives, please DO contact us before you leave a neutral Neutral feedback rating or negative Negative feedback rating feedback, we will provide better solutions until you are satisfied.

 

 

 

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.
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 AM
New York(US)
Sunday to Thursday08:00 PM - 05:00 AM
London(UK)Monday-Friday01:00 AM - 10:00 AM
Paris(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.
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