Oriolus BA300S

Oriolus BA300S - BA300S

Oriolus BA300S 4.4mm balanced Tube Headphone Amplifier Bile Tube Amp

NOTE:there is no on/off red light for the current batch , only the 1st batch have .


  • 4.4mm balanced input and output, current-mode operational amplifier diffused output, using 2 micro-tubes to amplify
  • Charging for 3 hours, battery life for about 7 hours, built-in lithium polymer rechargeable battery.
  • This unit does not set the volume control, the overall gain +3DB, to improve the output amplitude of most front ends.
  • Superior battery management ensures overall performance.
  • The signal is amplified by the bile duct, which satisfies the user's different sound experience.


  • The whole machine gain :+3dB.
  • Maximum output power: 350mW (32ohm)
  • SNR: -111db
  • THD+N: 0.02%
  • Frequency range: 10hz-50khz
  • Net weight: 165g
  • Size: 120x57x16.5mm


  • Oriolus BA300S
  • 4.4mm balanced male to 4.4mm balanced male cable (W107)


  • Will be shipped via DHL , TNT or FedEx such express service , If you have any question about the shipping ways , please feel free to contact us .
  • Pls leave us your telephone number when you pay .so we can ship out your item in the first time .

Write a review

Note: HTML is not translated!
    Bad           Good

Due to the impact of the COVID-19 pandemic, global international shipping will delays. The delay at our Hong Kong post office is very serious, so we have changed to other fastest or most efficient international shipping. Now the normal estimated delivery time may be delayed by about 1-2 weeks. In some countries where is higher free-tax rate, we will provide free courier service as much as possible.

Free Shipping

All listed items will be shipped though Registered Airmail with tracking number if there is no extra shipping method option listed or shipping description in the product page.

Economy shipping: Will be shipped without tracking number.

Registered Airmail : Will be shipped via such as Hong Kong post , Deutsche Post , Netherlands Post , Singapore Post, you can leave us a message if you have any requirement about the shipping method .

It will be shipped via Hong Kong Post by default, Europe countries can choose to be shipped via Deutsche Post or Netherlands Post, it is also FREE, pls leave us a message if needed.

Express service: Will be shipped via DHL/EMS/UPS/FedEx

  • Views: 16501
  • Brand: Oriolus
  • Product Code: BA300S
  • Availability: In Stock
  • $369.00

Available Options

Tags: Oriolus BA300S, 4.4mm