I recently restored this gorgeous Luxman M-4000A power amplifier and matching C-5000A preamplifier. Let’s start with the beautiful M-4000A. Apparently, the legendary Tim De Paravicini designed the original M-4000. The improved and even rarer Luxman M-4000A probably also came from De Paravicini’s hand, but nobody seems to know for sure. UPDATE: Check out my recent […]
I recently modified a Musical Fidelity X-CAN V3 headphone amplifier. My goal was to see what sort of improvements I could make without spending too much cash. The Musical Fidelity X-CAN V3 uses bipolar output devices, with a tube driver stage. The tube driver stage is a JAN (Joint Army/Navy) 6922 mil-spec dual-triode tube, per
Musical Fidelity X-Can V3 Headphone Amplifier Modifications Read More »
After successfully building my LM3886-based gainclone project amplifier, I’ve decided to build a version that is better suited to driving low impedance loads. This lead me to the LM4780 chip from TI, which is just two LM3886 dies in the one package. It can be used as a stereo amp, or a bridged or paralleled
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
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
Redgum is an Australian brand I really wanted to be able to write great things about when I repaired and serviced this Redgum RGi120 integrated amplifier. Being completely independent and running a website entirely without advertising means I always say exactly what I think. I’m not swayed by anyone else, I don’t owe anyone any
The Redgum RGi120 Integrated Amplifier – Australian Quality? You Decide… Read More »
The Sansui corrosive glue problem affects many vintage amplifiers and other equipment. Resolving the issues caused by this glue can be time-consuming. You may be familiar with the scenario: over time, your favourite Sansui (or other) amplifier starts to develop faults. Maybe it won’t come out of protection, or maybe a channel becomes intermittent. These
