The preamplifiers category houses all articles relating to the service, repair, restoration and review of hi-fi stereo preamplifiers.

Krell KAV-280p Preamplifier Repair

Here's a nice little repair and power supply overhaul I recently made on a lovely Krell KAV-280p preamplifier. Let's call this the first article in #Krellmonth! The modest Krell KAV-280p may not be a high-end preamplifier in Krell terms like the Krell KRC-HR or Krell PAM-7, but what it lacks…

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Krell PAM-7 Class-A Preamplifier Repair & Overhaul

Krell has produced some stunning gear over the years and this Krell PAM-7 is a great example. Come with me as I repair and overhaul this lovely old girl. The Krell PAM-7 preamplifier dates back to earliest days of Krell, but all the trademark features are present: thick boards, premium…

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Accuphase C-202 Line-Level Preamplifier Service & Review

The Accuphase C-202 line-level class-A preamplifier is an extraordinary piece of hi-fi gear. Come along as I service and review this great preamp.The Accuphase C-202 is a line-level, class-A, fully balanced preamplifier. It also features a dedicated CD buffer circuit, with very little in the signal path. By any measure,…

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Krell KRC-HR Ultimate Preamplifier Restoration & Repair

Welcome back audio friends. Come with me this time, as I dive deeply into the repair and complete restoration of one of the best solid state preamplifiers of all time - the magnificent Krell KRC-HR. NOTE - for a bunch of different shots and angles, check  out my detailed Krell KRC-HR video…

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McIntosh C220 Preamplifier Repair

I've just repaired this lovely McIntosh Laboratories C220 preamplifier. This high-quality preamp fell victim to a growing problem - modern Pb-free production processes. The McIntosh C220 preamplifier is a hybrid tube/transistor based preamplifier, featuring a phono preamp and microprocessor control. It's a well-made unit, though not like the McIntosh of…

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