lynn_olson
Responses from lynn_olson
| 300b lovers As mentioned above, the Mark I Karna used a quartet of 45 tubes, but new production is limited at this time, with future availability an open question. Five years from now? Maybe, maybe not. Ten years? Maybe, maybe not. I can only go by popularity... | |
| 300b lovers Pindac brings up a good point. Designing a good amplifier is a lot of work, and there’s just as much work getting a product market-ready. The input and output tubes were obvious choices, based on subjective sonics, low distortion, and continuing a... | |
| 300b lovers RC coupling, although fast and compatible with overall loop feedback (highly desirable in pentode amplifiers), throws away about 1/3 of the potential swing (through voltage divider action) and also creates a steeper load-line, which increases dist... | |
| 300b lovers Let’s discuss driver tubes. Back in the Nineties, my Tektronix friend Gary Pimm built a distortion analyzer that could measure each distortion harmonic, out to the 10th harmonic, down to an astounding -120 dB. Maybe even -140 dB. It was way, way d... | |
| 300b lovers For now, Don tells me he is focusing on the Raven preamp and Statement power amp. We expect to transfer production to Spatial Audio, with product names and prices to be determined. The circuits, parts selection, and overall construction technique ... | |
| 300b lovers Thanks for the kind thoughts, whitestix. For those who are curious, this amplifier is a more advanced, second-generation Karna amplifier, first designed around 2005, and the result of a years-long collaboration with Don Sachs. More practical, two ... |