Zähl HM1 - Reference Headphone Amplifier
Feb 12, 2023 at 12:26 PM Post #586 of 1,489
Variable output voltage from a DAC won't help with amp noise floor
It'll help if you have a lack of actual volume control range or are so low on a pot that you get channel imbalance but that's not an issue here
Fair enough, but I feel there's some dynamic range loss when using 6v into the Oor due to the volume attenuation I have to do to get it to a listenable volume level. No to mention the volume pot is not that usable.
 
Feb 12, 2023 at 3:28 PM Post #587 of 1,489
Is there nowhere to buy the zahl hm1? Until 2024?
 
Feb 12, 2023 at 3:46 PM Post #589 of 1,489
Is there nowhere to buy the zahl hm1? Until 2024?
If you’re in North America, we’re completely sold through. We have a waitlist of people who have asked if any one cancels to be notified if you’d like to join.

I can’t speak outside of North America though although when I spoke to Zahl in January they mentioned all of the units had been spoken for when we tried to get some extras.
 
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Feb 13, 2023 at 3:02 PM Post #590 of 1,489
My review is up!

GoldenOne, just wondering, are there pics of the HM1 internals yet. You usually take the lid off things when you review.
 
Feb 18, 2023 at 12:27 PM Post #591 of 1,489
The HM1 alone really brings out the best of any headphone you throw at it, which is an impressive achievement. However, when combined with a tube amp, it brings the listening experience to a whole new level.
Totally agree. I have them separate in my home setup, but used HM1 as a pre into Nautilus at a recent meet, and that is a totally killer combo. Need to rework the home setup to do the same.

2023Feb004.jpg
 
Feb 18, 2023 at 12:30 PM Post #592 of 1,489
Totally agree. I have them separate in my home setup, but used HM1 as a pre into Nautilus at a recent meet, and that is a totally killer combo. Need to rework the home setup to do the same.

That's my plan as well but with HM1 to LTA Z10e (for some headphones and some straight from the Zahl)
 
Feb 18, 2023 at 12:59 PM Post #594 of 1,489
Feb 18, 2023 at 3:58 PM Post #600 of 1,489
Totally agree. I have them separate in my home setup, but used HM1 as a pre into Nautilus at a recent meet, and that is a totally killer combo. Need to rework the home setup to do the same.

2023Feb004.jpg
Have you tried the reverse, tube preamp into the HM1? To me that seems to make more sense as you keep the technical performance of the HM1, but get the tube sound as well.
 

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