SHIDU NEWS

There is a saying that nine out of ten teachers have got laryngitis,

the last one have aryngitis+ cervical spondylosis + gastric ulcer. Of course,it’s only a joke. SHIDU personal voice amplifier care about teacher’s healthy. 

Wearing a personal voice amplifier to make the sound more bigger is a good way to protect the though from shouting and over using. 

How to choose a better voice amplifier? 

SHIDU have over 20 year’s experience in R&D and produce voice amplifier, 

we recommend you choose a voice amplifier with more powerful sound. 

Here SHDU launched new models: S820 wired version,S821 wired version, and S515 updated version. 

  S515 S820 S821

Portable and Flexible ，Teacher’s Affordable Option 

SHIDU,enters the voice amplifier field earlier than other company, 

developed a number of high-quality amplifiers for teachers.

Because of its light and slim with better sound,being the first choice for school and teachers. 

New launched S820 wired version and S821 wired version,made by ABS envirement-frendly materials, 

minimalist design,Black and white ,can match with your dress style. 

S820 wired version and S821 wired version,Size:108mm × 88 ×43mm,bare machine weight:238g only.

Portable machine body with 10W big power amplifier,adopts acoustic technology,

sound louder and powerful penetrating,can be used in indoor about 100 persons.

Adopts SHIDU acoustic amplification electroacoustic system, equipped with smart digital amplifier module, 

low power consumption, high efficiency, intelligent filtering and noise reduction,sound louder,

 less howling.Adopts 1100mAh polymer battery,Use life is longer.

Compared with S820 wired version,S821 wired version voice amplifier supports audio input(AUX),

connect computer and phone is easy,suitable for many teaching scenes.

Ultimate Sound Quality，Super Thin,Super small,Super light

Updated S515 is more suitable for exquisite teacher,machine body is very small,

size:103mm × 75mm ×37mm,bare machine weight:121g only,suitable for holding and halterneck.

Machine body is also made by ABS envirement-frendly materials, sturdy and wearable,red and black,

can match with your different dress style. New launched updated S515,adopts big power dual magnetic horns,sound quality is more softer 

and delicate.sound clear at a long distance,suitable for indoor 300 persons to use.

10W high power + acoustic technology + SHIDU acoustic amplification electro-acoustic system,

protect the original sound,reduce the noise and hawling.

Adopts 1100 mAh polymer battery,Has a longer use life and super long standby,meanwhile,intelligent circuit IC,

lower consumption,auto-cut off power,more safety.Equipt with SHIDU voice amplifiers,make our teachers teaching 

more relaxed,protect teacher’s sound health and throat health,students listen more clearly.

Are you ready to choose SHIDU acoustic voice amplifier?