or Connect
Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › Many AV Receivers/Stereo Integrated amps do NOT use opamp powered headphone jacks
New Posts  All Forums:Forum Nav:

Many AV Receivers/Stereo Integrated amps do NOT use opamp powered headphone jacks - Page 12

post #166 of 221
Quote:
Originally Posted by donunus View Post
just got my gilmore lite and i am doing some comparing with my audiolab integrated amps HP jack. hmm, the glite is a little more civilized than the audiolab...
Well, I suppose Nicole Kidman is a little more civilized than Angelina Jolie, but....but I digress....

Tim
post #167 of 221
...and yes, Angelina gets my toes tappin' more...
post #168 of 221
Quote:
Originally Posted by odigg View Post
Hey donunus - You have the AD2000 don't you? Can you see how those sound out of the gilmore and the audiolab?
Traded the ad2k for the gilmore w/dps. anyway, the ad2000 was great with the audiolab. tight! is the first word that comes to mind
post #169 of 221
Quote:
Originally Posted by Navyblue View Post
Yes you are right.

Sheesh how do I get that number.
Just as well he picked you up on that. Anything could have happened---planes could have crashed, nuclear power stations exploded....

Incidentally, does anyone know where this thread is going? I understood it once...
post #170 of 221
any resistor network will change the impedance presented to the HP (and vice-versa). can also potentially change the freq curve, based on quality of resistors used.

same thing with using audio transformers. As mentioned before, it's the iron used. some are better than others.

But how about an OTL amp? nothing in the way from output to HP. would this make a good case for dedicated HP amps?
post #171 of 221
glitch,

Boy, is that a good question.

Now I hope that somebody can answer it, since I'm having a friend build me an OTL headphone amp this summer.

Hope I like the answer.............
post #172 of 221
I have limited space for electronics. I need an amp for my stats, a phono pre, and a headphone amp. That I can get that all in 1 piece is ideal for me. Especially since it cost $15 at Goodwill. It's also nice to have tone controls so I can boost the bass on some of my bass light vintage headphones.
post #173 of 221
Quote:
Originally Posted by greggf View Post

Boy, is that a good question.

Now I hope that somebody can answer it, since I'm having a friend build me an OTL headphone amp this summer.

anyone?
post #174 of 221
I didn't quote, but my post directly above yours is my answer. My headphone amp needs to drive stats and have a phono in, and I like tone controls for some of my headphones. I don't have room for a lot of equipment, so a vintage integrated amp is perfect for me.

I'm not sure what an OTL amp is, but if it doesn't have speaker outs, headphone out, and phono in, it's useless for me.
post #175 of 221
Quote:
Originally Posted by odigg View Post
Mcintosh uses output transformers, even in their non valve gear - I think. Not a useful bit of info for this thread, but something interesting to me.
I can confirm that my vintage McIntosh 1500 uses a direct transformer tap dedicated to the headphone output. This model was in production from 1965-1967 so I don't know how relevant this is on their newer models.

McIntosh does wind their transformers in-house though. They're very proud of them so I doubt that they changed this design over the years.
post #176 of 221
"I'm not sure what an OTL amp is"

Output transformerless?
post #177 of 221
I just cleaned up an old AKAI AMU110 stereo amplifier. It's clearly not really high-end, looking at the components inside. The headphones are driven from the main board, with two resistors at the headphone socket.

Compared with the Macbookpro, a power weak source, the first and most obvious difference is that bass on the Philips HP910 is not as boomy. (The mac can drive the cans loud enough, but not good enough). The tone controls can add quite a massive amount of bass (and some treble) when needed.

It needed some cleaning because the tone controls are not sealed, so dust can enter. (This is an example of a difference compared to my higher end NAD C160 preamp). I am thinking some oil or something might be useful as well, to make sure it runs well for a while. But what should I use?
post #178 of 221
Deoxit D5 to clean all switches and pots. Deoxit Faderlube F5 to lube the parts after cleaning. I got mine at Guitar Center. There is a good pictorial on Audiokarma Home Audio Stereo Forums
post #179 of 221
Comparing my Yamaha RX-V663 to my Graham Slee Solo currently anyone know what circuitry it has? They have at least worked on it´s "silent cinema". Yamaha likes to do their own DSP since they seem to find dolby slow . So some work have been put on that side.

Though in pure direct mode I will say despite a total silent noise floor and no distortion whatsoever I find the Slee Solo opening up the soundstage quite a bit and there is just that bit of less delay on it. But then it costs as much as the entire RX-V663 so should really be shameful if there was even any doubt.

Will have to try the HD 650 later which I feel is a tad slow at times. Ultrasones are quite fast so they aren´t as hurted as other may be I suspect
post #180 of 221
Quote:
Originally Posted by Dankerz View Post
Deoxit D5 to clean all switches and pots. Deoxit Faderlube F5 to lube the parts after cleaning. I got mine at Guitar Center. There is a good pictorial on Audiokarma Home Audio Stereo Forums
Thanks!
I'll be going to the electronics store to buy some Deoxit then.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Headphone Amps (full-size)
Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › Many AV Receivers/Stereo Integrated amps do NOT use opamp powered headphone jacks