Monthly Archives: November 2014

Boxed Kit Amps’ Gobo Stereo Amplifier Build and Review

If you’re a subscriber to Nuts and Volts Magazine, check out my article in the December 2014 issue where I build, test and review the Boxed Kit Amps Gobo Stereo Amplifier, a great little desktop reference amp for any skill … Continue reading

Posted in Audio, Commentary, DIY, Electronics, Gadgets, Hi-Fi, Projects, Stereo | Tagged , , , | 2 Comments

VD-1221 Replacement Substitute Diodes

We’re lucky that these days you don’t need to stock very many diodes in the parts drawers for refurbishing most vintage gear – pretty much everything except for the main power supply rectifiers can usually be replaced with some combination … Continue reading

Posted in Audio, DIY, Electronics, Vintage | Tagged , , , , , , , , , , , , , , , , , , | 6 Comments

Vintage Schematic Mistakes

Every once in a while, you run into places where a drafting tech made some mistakes on the schematics. This one was a Philco 42-360 radio, which has the wrong tube called out in the tube line-up vs. the schematic. The … Continue reading

Posted in Commentary, Electronics, Vintage | Tagged , , , | Leave a comment

Harman/Kardon Control Amplifier A-401 Restoration

This little Harman/Kardon Control Amplifier, model A-401, just came through the shop for a full overhaul. It was in a pretty sorry state to begin with – one channel distorted, one barely gasping for air, and a world of scratchy … Continue reading

Posted in Audio, Electronics, Hi-Fi, Projects, Stereo, Vintage | Tagged , , , , , , , , , , , , , | 4 Comments

Stay Safe Out There [IT Safety and Security Practices]

Just in time for the holiday shopping season, every single credit and debit card I own is being re-issued by the banks due to data breaches at retailers across the country. It’s my fault, really, for shopping at massive retailers … Continue reading

Posted in Commentary, Computers, Internet | Tagged , , , , , , , , , , , | Leave a comment

Electronics, Meet Music

I got a chance to spend some hands-on time with a fascinating fusion of media produced by Tristan Perich, the 1-Bit Symphony. This project from the composer is unlike anything I’ve seen before. This fusion of music, electronics and traditional CD presentation … Continue reading

Posted in Audio, Commentary, Electronics, Gadgets, Music | Tagged , , , , , , , | Leave a comment

Sony TA-4650 VFET Stereo Amplifier Inspection and Upgrade

This Sony TA-4650 was shipped to me from Canada for a shop visit on its way to its ultimate owner in California, who just bought it on eBay. He had it sent to my shop for an inspection and a … Continue reading

Posted in Audio, Electronics, Hi-Fi, Vintage | Tagged , , , , , , , | Leave a comment