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ALO Pan Am desktop/portable headphone amp/DAC: Impressions and Reviews - Page 11

post #151 of 219
1/28/13 at 8:05pm
Thread Starter 

Glad to see more fans of the Russians. They are my favourites.

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post #152 of 219
1/31/13 at 6:13am

Russian tubes arrived. They win. Nicer than the Mullards. Totally spot-on.

 

The only downside is that it wasn't happy with my Sony XBA-3s and their wacky impedance curve.

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post #153 of 219
1/31/13 at 8:58am

It is pretty remarkable how much better the Russian tubes sound right out of the box.  Well worth the price.  I was surprised how much of an improvement they made over the stock tubes.  Everything sounded better.  Definitely makes the Pan Am that much more fun to listen to. 

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post #154 of 219
1/31/13 at 2:33pm
Thread Starter 
Quote:
Originally Posted by Currawong View Post

Russian tubes arrived. They win. Nicer than the Mullards. Totally spot-on.

 

The only downside is that it wasn't happy with my Sony XBA-3s and their wacky impedance curve.

Yes, very lowΩ BA earphones do cause some small headaches. At least there is plenty of balance to play with via the Pan Am, and thanks to software volume limits, there is pretty much infinite control to be had on the volume pot. Enjoy the Russians.

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post #155 of 219
2/4/13 at 9:55pm
I've tried searching all over the net but can't find pictures of what the unit looks like opened-up. Anyone so kind as to provide some Pan Am & Passport po*n?
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post #156 of 219
2/5/13 at 3:51am
So, could anyone comment on what the HE-500 sounds like on the Pan Am?
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post #157 of 219
2/5/13 at 5:19pm
Thread Starter 

I need to update my impressions here: the Last 20% of the battery is fine at normal to semi-loud listening volumes. When you stretch it up to very loud reach, the battery can force audible artefacts, but I've not had that problem at normal listening volumes with any of MY headphones.

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post #158 of 219
2/5/13 at 5:27pm
Quote:
Originally Posted by Flea Bag View Post

I've tried searching all over the net but can't find pictures of what the unit looks like opened-up. Anyone so kind as to provide some Pan Am & Passport po*n?

I second that. I'd love to see what it looks like on the inside.

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post #159 of 219
2/6/13 at 8:42am

Just picked up this AMP and I am currently using the stock tubes.  I also picked up the Russian tubes and I have the Mullard tubes coming as well.  Based on what others have said I think I will test each tube for 30-50 hours and pick the best one.  The Amp itself though is awesome.

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post #160 of 219
2/15/13 at 9:53pm
I'm using the Siemens tubes. Very impressed. I also have the Russians but I have not tried them.
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post #161 of 219
2/15/13 at 9:56pm
I have just tested the pan am with the T1. I actually had low expectations, but wow! Wait, that's actually incorrect. WOW!
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post #162 of 219
2/18/13 at 4:53am

A couple of questions for anyone who knows...

 

On the Passport, what is the difference between the jack labeled "Output" and the jack labeled "12V"?

 

What kind of battery pack does the Passport use (voltage, amps, mAh specs would be nice, but I can't find specs for it at ALO)?

 

Thanks in advance!

 

Mike 

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post #163 of 219
2/18/13 at 5:36am

Does anyone else hear a buzzing noise when the Pan Am is plugged in to the wall wart?

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post #164 of 219
2/18/13 at 5:57am
Quote:
Originally Posted by WSH33 View Post

Does anyone else hear a buzzing noise when the Pan Am is plugged in to the wall wart?

 

You might try a different AC outlet in your home, an AC outlet at a neighbor's house, or an AC outlet at work - to see if the noise problem goes away.

 

 

The owner of an Emotiva amp is having a similar problem, for which I've recommended an inexpensive power conditioner:

 

http://www.head-fi.org/t/629352/hifiman-he-500-on-a-speaker-amp-emotiva-mini-x-a-100-project/720#post_9176272

 

Mike

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post #165 of 219
2/18/13 at 4:29pm
Quote:
Originally Posted by WSH33 View Post

Does anyone else hear a buzzing noise when the Pan Am is plugged in to the wall wart?

Do you have the metal covers on the tubes? I keep my Pan Am close to my computer, and I find that I have to have the covers on to prevent humming. I do not get any hum from power, but I am plugged from the Passport into a NTS1600 Powerstation. 

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