Assembled A1 Headphone Amplifier Board Refer Beyerdynamic A1 Amp Head-Fi For DIY
Build with high quality components, Amazing sounding with high C/P rate
 
Up for sale is a high quality heapdhone amplifier refer to classic A1 headphone amplifier, A1 heapdhone amplifier is one of the most popular headhone amplifer for hi-fier ,  It can suit most headphones on the market. The sound of the headphone amplifier is superior although not 100% same as original product, But it is very close to an original Byerdynamic A1 headphone amp.

Note: ALPS type 27 potentiometer is optional, Pls select in drop down-list on top

High lights
  • Neutric gold plated headphone jack to ensure good contact with heapdhone jack
  • Built in UPC1237 headphone protection to provent expensive heapdhone from damage, No power shock when power-on/off
  • TAKAMISAWA relay with very low contact resistance to get low signal loss
  • Four audio grade capacitors with low ripple current for audio supply
  • Gold plated PCB board in military grade
  • Optimized PCB layout specially ground wiring.
  • Opamp is MC33078 which is same as original A1 amplifier, It can be subsitituated with OPA2604,LME49720,MUSES02,MUSES8920,OPA2134 etc

Specifications

  • Power input: AC (15V-18)V - 0V - (15V-18)V
  • Maximum Amplification: 18 dB
  • Frequency Response: 1 Hz - 100 Khz (-1 dB)
  • T.H.D.: 0.001% At 170 mW / 250 Ohms
  • Channel Separation: > 89 dB
  • Unweighted Signal-To-Noise Ratio: > 100 dB
  • Output Impedances:32 Ohm to 600 Ohm
  • Power Consumption: < 15 W
  • Dimensions: 12.7cm * 9.8cm

Packing List:

  •    One assembled A1 headphone amplifier PCB board

  About Chinaaudiostore
  • We are a team composed of audio enthusiast, We are proferssional in analog and digital electric, More than just reseller.
  • All products are sold for very reasonable and affordable price, Save every penny for you!
  • We offer profersssional customer service and after sale service, All message will be replied within 24 hours except weekend.
  • We try to describe products as precise and accurate as we can, You don't have to read awful 'Chinglish' and guess what it means.
  • All the audio products from China are available for sale, Pls contact us if you want anything not listed in ours store,We will offer a very reasonable price.
Payment
  • We accept payment via Paypal only.
  • Payment must be made within 5 days, Non-payment may result in an UPI .
  • PLEASE NOTE:
    a) Import duties, taxes and charges are not included in the item price or shipping and handling. These charges are the buyer's responsibility.
    b) Please check with your country's customs office to determine what these additional costs will be prior to bidding/buying
   Shipping
  •  Orders processed within 1-3 days upon payment received for most item,We will contact you if it is longer.
  • If you want the item urgently,Pls contact us for express deliver,We supply DHL/FEDEX/UPS/EMS,Additional shipping cost will be charged.
  • We only ship to confirmed Paypal addresses. Your PAYPAL address must match your Shipping address.
  • Shipping time is determined by the carrier,  It takes about 10-15 working days to US; about 10-30 working days to other countries.Transit times may be a little delayed during holiday season.
  •  If you have not received your shipment within 30 days after payment, please contact us. We will track the shipment and get back to you as soon as possible with a reply. Our goal is customer satisfaction!
  Return
  •  Pls contact us if you receive item in damage or defective condition once item delivered to you.
  • All returned items must be in the original packaging and you must provide us with tracking number, specific reason for the returns, and your eBay ID.
  •  We will refund you upon receipt of the item in its original condition, after both Buyer and Seller cancel the transaction from eBay. Or you may have a replacement.
  • Return shipping is buyer's responsibility.
  Services&Feedback
  • It's highly appreciated you leave us positive feedback and 5 star rating comments! If you are dissatisfied with item or have not received the items, please contact us for solution before leaving neutral or negative feedback, we will try our best to solve.
  • If you have any questions, please feel free to email our service specialists 24 Hours a Day, 7 Days a Week. We will reply you ASAP. If no response within 24 Hours, please check the spam in your mail box.