Salectric

Mark, I hope you won’t mind answering a question about your preamp designs. In looking over the linestage schematics, I noticed that many of your linestages have a fairly low value load resistor on the output. The original Blueberry and Peach have 47K, and Blueberry Extreme has 100K. Tube linestages typically have a higher value like 470K or 1M which is low enough to avoid a static voltage buildup on the output cap if there’s no amp connected but high enough to avoid loading down the output. I am sure you had a reason for choosing a lower value load resistor. I am just curious what it might be. Thanks in advance. Dave

The E schematic brings back lots of memories. I don’t wish to derail this thread so let me just briefly say that I built the E phono stage back in 1976 or 1977. At the time I knew it as the Trevor Lees design; it was only later that I found out he had copied your circuit. At the time I was a penniless grad student, but a friend saw the ad for the Trevor Lees kit and ordered one. I xeroxed his schematic, designed and etched a circuit board, and built it within a week. I thought it sounded great, much better than my DIY version of the Audio Research SP-3a1 phono. I also remember measuring the RIAA accuracy using an inverse RIAA network, and your design had the flattest response I had measured. In contrast, the SP-3 wiggled and jiggled. Anyway, I owe you a belated thank you for the design. I can understand why people still enjoy the sound of their Paragon preamps.

Thanks Mark. Much appreciated!

Mark, I just ran across this site and was very pleased to see you are still active and supporting the Juicy Music preamps through your posts here. If you don't mind, I would like to ask two questions: 1. In your conversions to use the 6H30, what B+ are you shooting for? 2. There was some discussion recently about the Paragon 12 and the E preamp. That brought back lots of memories for me. I recall the early days following the initial review of the Paragon 10 and I remember hearing how a certain fellow from Down Under "borrowed" your design. After all these years I would be curious to see what the real circuit looked like. Is the schematic of the E available for posting? Thanks in advance. Dave