Stereo Tri-Tone Control Pre-Amp and Headphone Amp

Part #: S21C

Download: Drivers / Documents

Other Pictures:
S21A supports Tri-Band equalization. The sound is clear and warm. If you like to adjust different sound band that suits your musical experience preference, This is the perfect choice between your player and music system and will improve the sound of all your music


Feature & Specification
Quad Opamp design
Tri-Band Tone Contro
   Treble ;
  - Control Range: 3KHz-20KHz ;
  - Trim Range: -12dB to +12dB ;
  - Center Freq: 18KHz ;
   Middle ;
  - Control Range: 200Hz-4KHz ;
  - Trim Range: -10dB to +10dB ;
  - Center Freq: 1KHz ;
   Bass ;
  - Control Range: 20-250Hz ;
  - Trim Range: -14dB to +14dB ;
  - Center Freq: 20Hz ;
Audio channel balance control
Independent opamp for each channel to minimize the crosstalk
Integrated isolation power to boost 5V to +/-12V
SNR: around 112dB (A-weighting)
Stereo Crosstalk: -90dB
THD: 0.003%
3.5mm headphone output & Line output
Headphone Drive Ability: 16 - 600ohm
Max. Headphone Output power:
  - around 270mW / 16ohm ;
  - 450mW / 32ohm at 1KHz;
Gain Switch for 0dB /-10dB output
Hardware Loudness EQ
Direct switch for bypass hardware tone control
Built-in 2200mah rechargeable Lithium Polymer battery
Battery Life : >6 hours
Charging time : 2 hours

Package Contents
Tone control Audio Box x 1
User Manual x 1
Micro USB cable x 1


Part Number Chipset

All information and specification are subject to change without prior notice
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The picture/s above might differ from the actual product delivered