Hirsch
Why is there a chaplain standing over his wallet?
- Joined
- Aug 12, 2001
- Posts
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Seven of us gathered at my place on Saturday to listen mainly to the Orpheus headphone. We had three HE90's and an HE60:
However, the star of the show was the prototype of a new amp by Headamp.com based on the HEV90. Here, Thrice listens to the new amp (the circuit seems to be complete, but the amp does not yet have a case):
This is a two-box design, with power supply in one box and amplifier in another:
Here's the power supply:
And here's the amplification section. Note that this amp uses the same tube complement as the HEV90 (2 12AX7's and 4 ECL86's):
One of the objectives of the meet was to compare the prototype to my Stax SRM-007t, which included the resistor in the bias line:
But I've got to admit that the prototype amp was the one that got me dancing (particularly to gpalmer's Bob Marley disc
):
I'll post a bit more about the sonic differences in a bit.
![he901a.jpg](http://moehoward9000.home.mindspring.com/he901a.jpg)
However, the star of the show was the prototype of a new amp by Headamp.com based on the HEV90. Here, Thrice listens to the new amp (the circuit seems to be complete, but the amp does not yet have a case):
![he902a.jpg](http://moehoward9000.home.mindspring.com/he902a.jpg)
This is a two-box design, with power supply in one box and amplifier in another:
![he903a.jpg](http://moehoward9000.home.mindspring.com/he903a.jpg)
Here's the power supply:
![he904a.jpg](http://moehoward9000.home.mindspring.com/he904a.jpg)
And here's the amplification section. Note that this amp uses the same tube complement as the HEV90 (2 12AX7's and 4 ECL86's):
![he905a.jpg](http://moehoward9000.home.mindspring.com/he905a.jpg)
One of the objectives of the meet was to compare the prototype to my Stax SRM-007t, which included the resistor in the bias line:
![he906a.jpg](http://moehoward9000.home.mindspring.com/he906a.jpg)
But I've got to admit that the prototype amp was the one that got me dancing (particularly to gpalmer's Bob Marley disc
![wink.gif](http://www.head-fi.org/forums/images/smilies/http://hfimage.head-fi.org/smilies/wink.gif)
![he907a.jpg](http://moehoward9000.home.mindspring.com/he907a.jpg)
I'll post a bit more about the sonic differences in a bit.