STK 4191 100W Stereo Power Amplifier with Pre-Amp, Mic Pre-Amp PCB Only

Power Amp + Pre-Amp + Microphone Pre-Amp + LED Equalizer Display All in one PCB 

The STK41XX II Series is a Hybrid Amplifier IC by Sanyo. The Series consists of 10 ICs ranging power output from 12W to 100W. All ICs in the series share the same circuit and pin out so you can just select any IC respective to your power requirement and put it to the circuit without changing any other component. STK 42XX II series can produce high power output up to 50 watts per channel. Also, this circuit consist with Mic Pre-Amplifier. You can connect Microphone directly with amplifier.  You can adjust Volume, Balance, Bass and Treble using the Tone Controller. 


Features of the circuit

  1. Professionally Designed PCB for the Best Quality Output and Stability.
  2. Designed to Minimize the Noise and for Maximum Power output.
  3. Assembly Guide is included in the kit.
  4. Easy to assemble no need an expert knowledge.
  5. Quality Pre-Amplifier
  6. Quality Mic Pre-Amplifier
  7. Bass, Treble, Tone controller with Balance and Volume controllers
  8. 100% Tested for Quality and Stability.
  9. PCB is Compatible with range of STK amplifier ICs.

Printed Circuit Board (PCB) Specifications

  1. Dimensions - 220mm x 85mm
  2. Thickness - 1.6mm
  3. Material - Bakelite epoxy
  4. Solder mask - none
  5. Anti-Oxidation Rosin Coat
  6. Manufacturer - CAD PCB
  7. Made in Sri Lanka.

The Components Kit

[Please Note that This Listing is only for Printed Circuit Board. No components will be supplied. Components Images Just only for the illustration Propose only]


The STK IC (Integrated Circuit)

This board is Compatible with 10 types of STK 41XX series amplifier ICs. You can choose the STK IC for desired Power and the supply Voltage in the chart below


Example: If you want to build a 100W amplifier, you should choose STK4191II and the supply voltage should be +/-35V (or 28V-0V-28V center tapped Transformer) 

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Package Include 

  • PCB Board  x 01 
  • Instruction Manual x 01 
(NO Retail Box. Packed Safely in Bubble Bag)