Amplifiers

Articles about power amplifiers, integrated amplifiers, monoblocks, big and small amplifiers, solid-state and tube amplifiers!

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Amazing Kenwood L-1000 System Service

Wow, I’ve just serviced a complete Kenwood L-1000 hi-fi system! This is incredible gear, beautifully constructed, with stellar build quality. The Kenwood L-1000 series are becoming rare now, so to find a complete system in the hands of its original owner is something pretty special. This stack of gear consisted of the Kenwood L-1000M power […]

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Yamaha CA-610 and CA-710 Integrated Amplifier Service & Repair

Recently, two friends with lovely vintage Yamaha CA-610 and CA-710 integrated amplifiers sought my assistance to have them repaired. One was dead, the other was not working well. The Yamaha CA-710 had blown one channel. One of the original output devices, a Sanken 2SA745, had a collector to base short and it had taken out

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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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Music Angel Class A Tube Amplifier For Sale

Liquid Audio is pleased to offer this Music Angel Class A 845 tube amplifier for sale, in new condition, with original boxes and packaging! UPDATE – SOLD!! The Music Angel Class A 845 is a beast. This is 28kg of pure Class-A, single-ended triode (SET) tube amplifier that sounds nothing like any solid state amplifier

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Arcam Alpha 9 Integrated + Power Amp Service

Arcam makes some nice equipment, so when a customer asked me to service his Arcam Alpha 9 integrated / power amplifier setup, I was happy to assist. The Arcam Alpha 9 amplifier was a mainstay for Arcam for many years. The amplifier is fairly straightforward in design and neat in internal layout. There is nothing

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Amazing Accuphase C-280 and P-300X

A customer of mine recently purchased some great new Accuphase gear and brought a couple of pieces over for me to look at. First up, we have an amazing Accuphase C-280 preamplifier. This was Accuphase’s statement preamplifier in the 1980s and it is an amazing piece of engineering. With complete dual-mono construction, including two transformers, the

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Krell KSA-200S Amplifier Repair & Restoration

I am about to embark on a Krell KSA-200S Class-A Amplifier Repair and Restoration for a 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, being hewn from solid

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