Category Archives: Amplifiers

Articles about amplifiers, big and small, solid-state and tube.

The Sansui Corrosive Glue Problem

While I am restoring this lovely AU-717 amplifier, I felt it was worth discussing the infamous Sansui corrosive glue problem.

Most equipment manufactured by Sansui, and others, during a certain period in the 70’s and 80’s will be affected by this nasty, corrosive compound. Its called polychloroprene and it literally eats through components like an acid.… Read more

Sansui AU-717 Integrated Amplifier Repair & Restoration

I recently restored a gorgeous Sansui AU-717 integrated amplifier. This AU-717 was not running properly and was in serious need of some TLC.

The Sansui AU-717 integrated amplifier is one of those pieces that I just love working on. Sansui designed and built the AU-717 at a time when labour was cheaper. Money went into build quality, parts and layout.… Read more

Kenwood L-1000 Series – Exceptional Audio Components

I was recently asked by a customer to service and repair two of his gorgeous Kenwood L-1000 series components. In the lab this time were an L-1000T tuner and matching L-1000D compact disc player. All I can is wow! This gear is seriously well put-together and just beautifully engineered.

In what was a great result, I successfully repaired both units.… Read more

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.

There’s not much you can buy that can touch the performance of a class A amplifier of this quality – let’s face it – the Krell KSA-150 was ten grand – in the early 90’s!… Read more