Jim Hagerman's latest activity
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Jim Hagerman replied to the thread Absolute best amp for hd6xx hd650 and its other sibling.Tuba works very well with these. But it's not really that expensive, so easy to overlook... -
Jim Hagerman replied to the thread Headphone amplifiers WITHOUT a preamplifier / preamp.My TUBA does not have a preamp, as input signal goes straight to output tube. Just enough gain to make it work. It does have volume...
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My favorite has been the rca 7189. I also have a feliks echo coming as my second tube amp at almost exactly the same price as this so...
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I have noticed this difference in brightness...and it varies with tubes and the tubes themselves are not mounted in the sockets exactly...
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Jim Hagerman replied to the thread Hagerman Audio Labs "Tuba".All tubes glow at different brightnesses. It's a matter of how much excess filament gets exposed outside of cathode sleeve. Tubes are...
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Jim Hagerman replied to the thread Hagerman Audio Labs "Tuba".Tubes are oriented 180 degrees apart in rotation, in order to optimize internal mirrored symmetry. If you view from another angle the...
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I think I may have said this before, but the choices of EL84 and the Hammond iron are excellent "real world" decisions. Low cost and...
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Jim Hagerman replied to the thread Hagerman Audio Labs "Tuba".Somebody sent me a pair of Telefunken, which I am using now. Great detail with super wide soundstage. Not too different from the...
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When properly placed (and no grounding issues are present) I can confirm that the Tuba is perfectly silent. In my opinion it's...
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I like Geroge, but his videos from a technical perspective have a lot to be desired. IMO. :>(
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Jim Hagerman replied to the thread Hagerman Audio Labs "Tuba".Those vents are not needed for cooling. Mostly decorative. I designed the chassis such that I can re-use it for other products, in...
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Jim Hagerman replied to the thread Hagerman Audio Labs "Tuba".Yes, I did this on purpose. I do NOT want to be fabricating all these wood panels by hand. That's not my thing. You can probably do a...
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Jim Hagerman replied to the thread Hagerman Audio Labs "Tuba".Hmmm. Does it do the same with LO output? "Hollow" is an indication one channel is out of phase...
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Here's my impression and "review" of the TUBA. First of all, I am not an audiophile. I m just a medical employee who enjoys listening...
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I'm looking forward to the review! What I found out in the time I've had the Tuba is that it has enough clarity to show you small...
