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kx-amplifier: A very high performance 28 Watt class A Current Feedback Amplifier

kx-amplifier: A very high performance 28 Watt class A Current Feedback Amplifier

March 16, 2018 · by Bonsai · in Amplifiers, Power Amplifiers

The Hifisonix kx-Amplifier is a 28 Watt class A DIY Current Feedback (CFA) power amplifier featuring low distortion, wide bandwidth and fast rise/fall times.  It can be operated either in pure class A mode, or in class AAB mode with…

Ovation nx-Amplifier

Ovation nx-Amplifier: A High Performance 100 W class AB Current Feedback Amplifier

July 15, 2014 · by Bonsai · in Power Amplifiers

This power amp design is based on the sx-Amplifier topology, but with the TIS and output stage re-configured for class AB operation, enabling it to deliver 100 W into 8 Ohms. I have kept the design very simple, retaining the…

Ovation sx-Amp Interior View

Ovation sx-Amplifier: A 15 W Class A Current Feedback Amplifier

March 22, 2014 · by Bonsai · in Power Amplifiers

Update January 2018: For the sx-Amplifier, you can now buy a complete set of very high quality Double Sided THP Gold Flashed PCB’s from Jim’s Audio here: sx-Amplifier DSTHP Gold Flashed PCB Set If you are having problems wiring up…

CFA vs. VFA: A Short Primer For the Uninitiated

CFA vs. VFA: A Short Primer For the Uninitiated

November 22, 2013 · by Bonsai · in Audio Design Library

This article was written in 2014 in response to what can only be described as a vitriolic debate as to what constituted a CFA on diyAudio.com.  At the time, many of the participants were struggling to grasp the fundamental differences…

AN-597 Current Feedback Amplifiers

November 14, 2011 · by Bonsai · in Audio Design Library

This National Semiconductor application note was written by Hans Palouda and published in 1989. It explains basic CFA operation clearly and concisely. AN-597 Current Feedback Amplifiers Here are some other useful application notes and articles that may help in developing…

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