Preview: Rubycon Black Gate™ F vs. Nichicon Muse | XMOS Capacitor Oscilloscope and FFT Comparisons

Update 7/15/18: I just stumbled across by far the most detailed document I have ever seen on Black Gates™ and it is by Jelmax (the creators of the technology)! See the 107 page PDF here: Blackgate_Tech_Note_Compilation.             Cable used between the FUN01’s Coax output and the Siglent SDS 1202X-E : […]

Complete Guide to Making I2S Cable from CAT6A & Connecting it to ES9038Pro DAC (Using Belden 1303E Catsnake™) Updated: 6/12/18

  Note: You can open all images displayed on Hallman Labs in a larger view by right clicking and then using whatever your browser says to view the image. This should open a new tab with the image in full size. I started an article on making custom I2S cables, but I never published how […]

DSC1.Difference : Update on the DSD Dedicated No-DAC (DAC)!

I have been slowly working on this project  behind the scenes, without posting about it much (aside from on This is a “discrete” delta-sigma digital to-analog converter (DAC) developed by Signalyst (although, this wasn’t made by them). Their goal was to be able to convert DSD signals (digital equivalent to SACD) into analog while […]

“Help”: My Cornell Dubilier BF-50 Is Testing Open Circuit as Good | Note : Treble Bleeds Halted

I was using my Cornell Dubilier BF-50 (vintage) capacitor analyzer with all of the right things showing on the “Magic Eye” 6E5 (Philips JAN (Mil-Spec)) electron tube’s eye for leakage, short, and open tests. By the way, the BF-50 uses a 12A7 (Tungsol) electron tube for both rectification of the AC input and amplification. Both […]

Ran Down (1st) ES9038PRO DAC main cause of the NLOCK | Stuck on Screen Issue w/ No Output! (~ 4 months of troubleshooting show me, it was not the dedicated TCXO clock module): Persistence Pays, this might work again!

    This single loose solder ball (could have fallen inside the enclosure at any point) might explain all the problems I had with getting the DAC to lock on to any audio signal. It would be a great job if it wraps up the issues. Stay tuned to find out if I was right! […]

Hallman Labs 1st Product for Sale (Soon): Fixed Resistance Treble Bleed Kits V1.0 & V2.0 (Thoughts on V3.0 & V4.0)

Hallman Labs first official products for sale will be treble bleed circuits for guitars! When you dial down the volume on your guitar (with any pickups) the high frequency is rolled off sharply. The treble bleed counteracts this rolling off of the highs by bleeding high frequencies directly into the potentiometer output leg. Thus acting […]