Krell KSA-50 Clone
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Krell KSA-50 Clone

This guide is a compilation of the information from Krell_KSA-50_clone_Building_Guide

NameKrell KSA 50 Clone (by Jan Dupont)
TypeSolid State
ApplicationHigh Bandwidth Amplifier
Approx Cost$2,000 USD (new)
DesignerDan D'agositino (from Krell); clone by Dan Dupont

The Project


This is a clone Krell's KSA 50 amp which helped put the company on the map during the late 80s and early 90s. It is a pure class A amp and delivers a very sweet sound.




Volatge Gainvalue
Sensitivity8 Ohm: 50 (17 dbW), 4 Ohm: 100, 2 Ohm: 200W
S/N RatioUnknown
Rated Consumption100W
Idle Consumption100W
Harmonic DistortionUnknown
Harmonic SpectrumUnknown
Square/Step responseUnknown
Output configurationsCan it be bridged? Parallel drive?
Output ImpedanceUnknown


Bill of Materials

Simulations and Analysis

Note yet complete

Construction (Steps / Tips / Notes)

Is there anything peculiar about the design that a builder might want to know about? List them here? Or do you just want to give us a step-by-step build plan; that works too.

Project Modifications

Do you have some small modifications to suggest for the project that could improve it? Please list them and tell us why they improve the design. If this is discussed in a thread, please link the thread URL here....

Modification 1

Cross the streams!

Modification 2

Install a flux capacitor!


Review 1

Rock on!

Review 2


Build Threads

Have you built this project? If so, please add the URL to the thread that you started to show off your build.
  • URL to my uber build 1 thread
  • URL to my super dooper build 2 thread!!!
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