Quote:
Originally Posted by synaesthetic /img/forum/go_quote.gif
I'm curious to know how this stands up against the SOHA, and whether or not it has a DC offset issue when powering up and down like the SOHA does (necessitating a protection circuit for forgetful folk such as myself).
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If you look at the schematic, the outputs sit at ~19V. So yes, until the coupling cap charges, I would think that your headphones will see that voltage.
That said, IMHO, the spirit of the design would dictate simply being careful to wait before plugging in, not applying a sophisticated delay/offset protection circuit.
The same precaution was traditional for a long time with the SOHA and a couple of iterations of the Millett Hybrid before that.
Quote:
Originally Posted by fault151
How does it sound compered to the millet max?
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Gosh - please don't get us into a "this is better than that, etc." by asking a question like that.
There's probably nothing that can compete with this as a tube amp and low cost. I'm excited about it - it looks like great fun, but I don't think it takes anything away from the Millett MAX.
Pete himself suggested about the Starving Student, "This is a fairly tubey sounding amplifier, similar in character to the original hybrid tube headphone amp design I published in audioXpress waaay back in 2002." He is referring to the
famous original Millett Hybrid that used monolithic BUF634 buffers and an off-the-shelf DC power supply.
I would imagine that it's very competitive, but the MAX's power supply and diamond buffer is as sophisticated as many top-level solid-state amps (besides including an on-board delay circuit). However, AFAIK, none of us besides Pete and Nate have tried the 19J6 tubes, yet. So, build them both. That's what I'm going to do - several of each, even.
Again - thanks, Pete!!
