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K5157 • 200W SC200 Amplifier Module Kit 


Cat. Page 241


  • $84.95
  • 4+ $82.00
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  • Includes GST


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Last updated 24-08-19 09:20:10

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(SC Jan-May ‘17) This completely new amp design incorporates most of the features of Silicon Chip Ultra-LD Mk4 200W amp but uses easy-to-solder through-hole components - no SMD! 200W into 4Ω load.

NOTE: Heatsink for illustration purposes,

Important Note For Kit Buyers:
This product is supplied in component form and requires soldering, drilling, and assembly. We recommend users are familiar with at least basic electronic principles and have the ability to solder.


  • Low distortion and noise
  • Easy to build
  • Compact PCB
  • Clipping Indicator LED
  • Onboard DC Fuses
  • Specified Power Output
  • Power Indicator LED’s
  • Overload Recovery
  • Square Wave Response
  • Survives Short Circuits
  • Quiescent Current Adjustment
  • Ouput Offset Voltage Adjustment

Why buy an Altronics Kit?
Altronics kits are premium do-it-yourself projects designed to be assembled with ease. However, basic electronics knowledge and soldering skills are essential to construct our kits. A difficulty rating is provided to help determine if your ability is sufficient to build the kit project. Please note, once assembly has been commenced we are unable to honor any warranty claims. Please see the full details here.


  • Output power (230VAC mains): 200W RMS into 4Ω, 135W RMS into 8Ω
  • Frequency response (10Hz-20kHz): +0,-0.05dB (8Ω); +0,-0.12dB (4Ω)
  • Input sensitivity: 1.26V RMS for 135W into 8Ω; 1.08V RMS for 200W into 4Ω
  • Input impedance: 11.85kΩ shunted with 1nF
  • Rated Harmonic Distortion (4Ω, 8Ω): <0.01%, 20Hz-20kHz, 20Hz-30kHz bandwidth
  • Signal-to-Noise Ratio: -116dB unweighted with respect to 135W into 8Ω(20Hz-20kHz)
  • Damping factor: ~250
  • Stability: unconditionally stable with any nominal speaker load 4Ω
  • Music power: 170W (8Ω), 270W (4Ω)
  • Dynamic headroom: 1dB (8Ω), 1.3dB (4Ω)
  • Power supply: ±57V DC from a 40-0-40 transformer
  • Quiescent current: 88mA nominal
  • Quiescent power: 10W nominal
  • Output offset: typically <10mV untrimmed; <1mV trimmed

*Specifications are subject to change without notice.

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