Search results

Having just built a valve tester, and starting testing a few valves, I have come up against trying to work out when a valve is good or not. Firstly, even with new valves, I can't find any reference anywhere to what is a 'normal' spread of parameters, especially anode current against grid...

I'm in the process of building a pair of GEC912+ amplifiers as a 'winter project'. These are EL84 ULPP amplifiers, but the output transformers are tapped for 4 and 16 ohms. No 8 ohm tap! I'm intending to use them with my JR149 loudspeakers which are reputed to be a 'benign' 8 ohm load, whatever...

I'm looking for an inexpensive converter that will take an S-PDIF input and deliver a USB output. There are any number of USB to S-PDIF output for under £$€20 , but I can't find a single one that provides an S-PDIF input. I want to make some measurements on a stand-alone ADC that takes in...

I've felt for some time that there's a disconnect between quality judged on measurements and quality judged by audibility. Just about any product, including the Amazon Basics amp given a broken panther recently, are likely to be audibly transparent in general use. So, are measurements...