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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 .

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Free Shipping

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

Economy shipping: Will be shipped without tracking number.(because of the covid-19 affects, economy airmail parcel is easy to lose, pls place the order by choosing registered airmail, or you purchase one more product , we can send together via registered airmail)

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

We can ship the parcel to Canada and Europe countries via tax-inclusive shipping method with extra charge, pls leave us a message if needed.

Express service: Will be shipped via DHL/EMS/UPS/FedEx,Canada and Europe countries will be shipped via tax-inclusive shipping method for free.

  • Views: 22040
  • Brand: Oriolus
  • Product Code: BA300S
  • Availability: In Stock
  • $369.00

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Tags: Oriolus BA300S, 4.4mm