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SD21T is fully digital signal processing instrument with miniature shape,AGO-O output limiting,and 3 programmable memories. Programmable parameters,program push button,and extrernal volume control offers great fitting flexibility
to the users.

  • Miniature design
  • 100% digital signal processing
  • Single channel linear amplifier
  • Programmable AGC-O output limiting
  • Direct audio input
  • 3 programmable memories
  • Power on delay
  • Audible memory indicator
  • Low battery indicator
  • Programmable audible memory indicator
  • Suitable for mild ro severe hearing losses
 

EN/IEC60118

&IEC60711

EN/IEC60118

&IEC60126

ANSI S3.22-1996

Max. OSPL90(dBSPL)137130132
OSPL90(dBSPL),1600Hz130123 
HFA. OSPL90(dBSPL)  124
Max. Full-on Gain(dB)655858
Full-on Gain(dB),1600Hz5849 
HFA. Full-on Gain(dB)  54
Frequency Range(Hz)  260-5100
Total Harmonic Distortion(%)   
500Hz≤1.5≤1.5≤1.5
800Hz≤1.5≤1.5≤1.5
1600Hz≤1.5≤1.5≤1.5
Equivalent Input Noise(dBSPL)≤29 typ.26≤29 typ.26≤29 typ.26
Tele-coil Sensitivity(dB)9585 
HFA-SPLITS(dB)  85
Battery Current(mA)1.01.01.0
The complete features of data sheets is available on www.lisound.org