Hi Bruce, I am considering this for a first (in several decades) project. The cost looks right, and since I don't have any high-end gear, if I blow up a pair of headphones or something, it will fall into the learning category.
I have a pair of cheap Philips Noise Cancelling headphones, that I use all the time. I measured them with my trusty meter, and they seem to be 32 ohm. (Sure, I know I need to do this measurement way differently, because the resistance varies by frequency, but, my point is, they aren't 300 or 600 ohm or anything like that.)
In the past, I've read a lot about having the output impedence for solid state headphones amps be much lower than the actual impedence of the phones. (Not sure exactly what the theory is here, but, my cheap FiiO E5 does sound nice) I'm thinking, the theory might be the same for tube amps.
Sooooo: 32 ohms isn't far from 8 ohms, and < 1/2 watt of output power isn't going to be a lot, but, it would be fun to play with a pair of little speakers. If I got the Edcor GXPP10-8-10K (10k : 8ohm), would this setup 1) work, and 2) give me a starting place for experimenting with either my headphones and/or little speakers? My hope would be the output transformers could be reused in future projects, but still "work" for this first project.
Thanks in advance! Dave
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