DAC Accessory: XLR In -> RCA Out (Ckt Based on D. Self Design) Updated 1/22

Update 1/21/18: I wanted to let everyone know how impressed I have been with this unit by just using the stock 5532 op-amps with this Douglas Self based circuit design. I am using a rectifier supplied by Audio Sector (Peter Daniel)  The parts are explained further below. It uses MOSPEC U08A60 ultra fast recovery diodes with a […]

Discrete Op-Amp Review, Prelude: Photos of Review Hardware (Burson V6-OPA-D “Vivid” Unskirted)

In the photo below we have 4x Burson Audio V5-OPA-D, 4x Burson Audio V5-OPA-S, 3x V6-OPA-D “Vivid” along with two Orange Amplification discrete (Dual-DIP). Two of the V6-OPA-D casings lifted right off when I was rolling op-amps so I got us some pictures of the exposed boards! Note: the end letter on Burson Audio op-amp […]

Soldering Irons and Microscopes

This is the new method I am using to not only ensure the quality of solder joints, but also verifying vintage items that are not easily read or seen. Especially with vintage tubes. Transparent materials give this the ability to literally pierce down deeper. This no-name brand standalone/portable microscope with a 6-8 hr battery comes in […]