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 Upgrades Read More »
A lovely customer of mine rang me to tell me that his beloved Pioneer SX-1250 monster receiver had died in a cloud of acrid smoke. Naturally, he was devastated and asked if I could restore the old beast for him. The Pioneer SX-1250 is a monster receiver in the truest sense of the term. There
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Come along as I repair and restore a beautiful Thorens TD-125 Mark 2 turntable that gathered dust and dirt for many years. The Thorens TD-125 clearly hadn’t been operational in a long time and when my friend’s father – Neil, the owner – expressed disappointment that he wasn’t able to play his records anymore, I
After successfully building my LM3886-based gainclone project amplifier, I’ve decided to build a version better suited to driving low-impedance loads. This leads me to the LM4780 chip from TI, which is just two LM3886 dies in one package. It can be used as a stereo amp, or a bridged or paralleled mono amplifier. The datasheet
