class-A amplifiers

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Stunning Krell KSA-100S Amplifier Repair, Restoration & Review

Good news, we’ve saved another stunning, irreplaceable amplifier, this time a Krell KSA-100S power amplifier from Krell’s golden era. Welcome back, classic hi-fi lovers! If you like amplifiers you’ll enjoy this one. Almost nothing is built like this beautiful amplifier now or even back then. Gear like this stunning Krell KSA-100S is so hard to […]

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Beautiful Yamaha CA-2010 Integrated Amplifier Repair & Restoration

The beautiful Yamaha CA-2010 must be one of the best-looking integrated amplifiers of all time. Come with me as I repair and restore this classic amplifier. The Yamaha CA-2010 integrated amplifier is just beautiful and Yamaha knows it. Most people know it too and in fact, this aesthetic design works so well that Yamaha recently

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Fully Restored Krell KSA-150 Class-A Amplifier for Sale in Near-Mint Condition

This is a once in a lifetime opportunity to own a near-mint, fully restored, KSA-150 class-A power amplifier, with original double boxes and 15 amp power cable. This stunning amplifier also has the very unusual 15-11150 serial number, perfect for a KSA-150! I even have the original owner’s manual somewhere and will try to find

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Class-A Amplifiers and the Krell KSA-150

Regulars will know how much I love Krell’s class-A amplifier designs. The Krell KSA-150 power amplifier is a great example. In this article, I discuss the basics of class-A amplifiers, with particular reference to the gorgeous KSA-150. You may have already watched my restoration video, where I completely refurbish one of these beasts, if not,

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Krell KSA-200S Class-A Amplifier Repair and Restoration

I am about to embark on a Krell KSA-200S Class-A Amplifier Repair and Restoration, in this case for a very good friend of mine.    As many of you will know, the Krell KSA-200S is a beast of an amplifier, up there with the very best products Krell ever made. It is almost unliftable by one person,

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Krell KSA-150 Class-A Amplifier Service

One of my recent jobs was inspecting and servicing a lovely example of a Krell KSA-150 Class A Power Amplifier. You may have already watched my restoration video, where I completely refurbish one of these beasts. This video has actually generated a great deal of interest and I receive lots of queries in relation to

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Krell KSA-150 Amplifier Repair & Restoration

This video documents my comprehensive overhaul and restoration of a gorgeous Krell KSA-150 class-A power amplifier. This wonderful KSA-150 developed a serious fault at some point in the past. This had been quickly fixed and was sold to me in very poorly repaired condition. Because of this, I decided to completely overhaul the amplifier and

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Krell KSA-150 Class-A Power Amplifier Restoration

A couple of years back I performed a comprehensive tear-down, overhaul and upgrade of my gorgeous Krell KSA-150 power amplifier. I made a video of it, which you are most welcome to check out: UPDATE: It’s received over 100,000 views as of January 2022! There’s not much you can buy that can touch the performance of

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