It's not the REV33's output impedance that he wants. He wants to know what source impedance the REV33 was designed to work with.
Since they say nothing about specific amplifiers, I think it's pretty clear that it's intended to be used with whatever amplifier the customer has. And since most headphone amps have output impedances of around 5 ohms or less, I think it would be fine to just test up to around 5 ohms or so. There are some extremes out there, but they're in a distinct minority.
se
And in my telephone discussion with Dennis Rauschmayer, he told me that patent was "for something else" and didn't cover the "core technology" of the REV33. Take that for what it's worth.
se
Ah! I guess the triode SET is out, then.
Well, the belt clip for that one is kind of uncomfortable anyway...
Still sounds like the picture, with the usual audio weasel words to make a simple filter seem profound.
Still don't see how the "distortions" they claim to address results in in their claim that "REV33 relieves the painful and disruptive effects of ear fatigue — ear-ringing, buzzing, hearing loss, headaches."
se
On stage gets loud, so those IEM's get cranked, and that's when the trouble starts.
When I do follow spot on really loud shows, I have to crank my talkback headset to get over stage/PA sound, add to that the vocal cues from the LD are almost shouted and buried in room sound....it can get pretty hard to understand whats coming down the line.
After a couple of hours of this our ears are cooked....fortunately the talkback systems run pretty savage lows and highs filtering, elsewise our ears would be shredded/bleeding.
On stage/production side is a whole different situation to listening to a few tunes on your iPod.
So, rolling out the highs/hash is the first thing to do to protect hearing/reduce ear fatigue.
With less HF junk, the ears 'open up'/don't shut down, and lower SPL is required to achieve better intelligibility/pitching.....win/win situation.
$150.00 for the REV33, jumper cable and leather pouch (and development/custom dies/premises/labour etc...etc)...could/would any of us do it for any less ???.
Dan.
When I do follow spot on really loud shows, I have to crank my talkback headset to get over stage/PA sound, add to that the vocal cues from the LD are almost shouted and buried in room sound....it can get pretty hard to understand whats coming down the line.
After a couple of hours of this our ears are cooked....fortunately the talkback systems run pretty savage lows and highs filtering, elsewise our ears would be shredded/bleeding.
On stage/production side is a whole different situation to listening to a few tunes on your iPod.
So, rolling out the highs/hash is the first thing to do to protect hearing/reduce ear fatigue.
With less HF junk, the ears 'open up'/don't shut down, and lower SPL is required to achieve better intelligibility/pitching.....win/win situation.
$150.00 for the REV33, jumper cable and leather pouch (and development/custom dies/premises/labour etc...etc)...could/would any of us do it for any less ???.
Dan.
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Except that they claim "The REV33 does not process or analyze the audio signal..."
Pretty sure they're made in China, so yes.
se
Another way of saying that it is passive.
Ya gotta have proof before you can say that.
Dan.
Nonsense. A passive circuit can most definitely process the audio signal.
Read this:
REV33 | A look inside the REV33
They claim they don't process the signal, but rather make your earbuds/headphones operate more linearly.
It's funny though. Among the headphones in their list are the Audeze LCD-2s, which are planars and present a purely resistive load. So it doesn't even qualify for 1 and 2.
No I don't. I simply said I was pretty sure, not that it was definitive.
se
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