Isolation Transformers & Safely “Floating” Ground (Draft-Publish)

In theory, isolation transformers (IST) sound like “the” essential safety device for an ECE workbench. The question is, are you trying to protect your equipment, yourself or both? The two other essential safety devices for your ECE workbench are a decent variac and Differential Probes. A Note from HL: I wanted to go ahead and […]

ES9038 DAC Overhaul: Sockets, Capacitors, Resistors (Video Included)

HL tears the ES9038 DAC down to the bones for a full hardware upgrade! In stage 1 of upgrades, I worked on the analog side of the board, replacing nearly all the stock parts, including: resistors, DIP-8 sockets, and capacitors. The results have been impressive, giving a much more reference leaning tone. (ELNA SILMIC Super Gold included)

Update On Dual-DIP SS2590 + Loose DAC DIP8 (Peek at New IsoRegen)

After spending weeks trying to figure out why I was getting random noise, coming out of my digital equipment, I found the cause. I noticed that it kept coming through, with nearly every op-amp. I figured out my DIP8 socket (on the ES9038 DAC) was faulty. It feels like it has lost all pin tension. The larger op-amps, especially those with lifted DIP8 adapters, tended to fall out of the socket. The review should be out in September. This is mainly due to the number of op-amps involved in the testing process. Which is also why, these sockets are very important.
I also acquired an UpTone Audio IsoRegen, as this is a must for HiFi on a Home-HPC. This totally isolates the USB 2.0 line from the power supply in the computer itself. This is something I had been wanting to get for a while. Got lucky and found one for less than half the normal cost. It looks to be barely used, with the stock power supply, all in great condition.