@atmasphere I agree on the vintage amp transformers. The citation II amps were legendary and would be flat down to about 8 or 9 Hz at full power. The Sherwoods were generally pretty good as well as the Scotts and Fishers. The Eico stuff can vary. They were definitely built to a price point. The best little EL84 amp I ever heard was the Sherwood. If 10-12 watts/ch was enough, the little Sherwood integrated amp was quite enjoyable to listen to. The Macs and Marantz amps also had very good iron. The little Eicos, Heathkit, and others of that ilk were all over the map for quality of iron. Honestly there are fabulous transformers wound today if you want to work with a winder and spend the money. If you buy an off shelf Hammond, or Edcor or whatever you can certainly build a decent amp, but you will not the get the inner detail you will from a more expensive transformer. You get what you pay for. That is why Chinese amps for $1500-2000 are decent, but not great. Good iron is over $1000 for a stereo amp....
300B Tube Amps with 15/16 Watts Per Channel?
Felix Audio makes the dual 300B amp "Lybra"--are there any other manufacturers of that gear?.Does anyone have experience using two each 300B tube amps modified to be two monoblocks with 15/16 watts output power each? If yes, did you hear any difference in the exquisite 300B sound other than more power? All experiences and thoughts appreciated. (Yes, expense is already noted)
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@donsachs Great for small guitar amps though! |
I used to fix guitar amps for musician friends. They are pretty simple.... (the amps, not the guitarists!)... except Marshalls, which have many small pcbs and jumpers and inevitably it would be a failed bias pot on the board buried the deepest in the amp. A 3 minute repair that took an hour to get to. The thing was, I could always improve the amps, but they wouldn't want you to. They WANT distortion. So you just replace all the bad lytic caps, and make sure the operating points are where they should be, and put k40 oil caps in where old oil caps have failed, etc.. You can get away with making the power supply a bit stiffer, but that is it. Otherwise the amp is too "clean" for a lot of guys.... So yeah, a Hammond is just fine for a guitar amp.... |
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