A look at the improvements provided by upgrading the ES9038 DAC. FFT images are shown with an SDS1202X-E 200Mhz scope.
I also included a comparison of FIR filter responses
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.
Review of “InYourEar” Is Live!
InYourEar Review is now ready! Click here for the “InYourEar” review. Stay tuned for the SMD op-amp to DIP-8 modification for the SMSL sAp-10 amplifier (with how to video). I’ll also be converting SMD capacitors to full-size in this upcoming article. As always, thanks for reading Hallman Labs!
Potomac AA-51 Audio Analyzer – Calibration Procedure, Service Manual, Ref Images — Early Version of Upcoming Page (Work in Progress)
A look at the Potomac AA-51 Audio Analyzer: schematic, calibration procedures, service manual and more inside. Produced in the 1980’s, the AA-51 is still of great use.
The ES9038Pro DAC Returns! Expect Part 1 of Discrete Op-Amp Review by 3/10/18 (Saturday night)
Here is a sneak peak at my reference DAC for all of the upcoming op-amp reviews. The Asian holiday really put a delay in this, but as always the hardware companies are patient and even tried to help me troubleshoot a product that isn’t even their design! I hope to post part 1 of the […]
Precision Resistors Lot : Over 12,000 Dale & Vishay RN55C Military Spec Resistors! An EBay Treasure Chest
As I mentioned in the previous article, I will use EBay as a vintage or high end/HiFi electronic components supplier when I see a deal. I have bought many lots that contained a lot of parts for a discount, but never at this scale. Below I have copied the information given on the Ebay […]