Head-Fi.org › Forums › Equipment Forums › Headphone Amps (full-size) › Little Dot Tube Amps: Vacuum Tube Rolling Guide
New Posts  All Forums:Forum Nav:

Little Dot Tube Amps: Vacuum Tube Rolling Guide - Page 584

post #8746 of 8749

Well folks, hit a dead end. After some 3-4 hours the transformer suddenly cut out. I assume that the overload circuit was activated.

 

I am not giving up yet; I'm going to get rid of that hum!

post #8747 of 8749
Quote:
Originally Posted by TrollDragon View Post

Gain Setting?


Yes, indeed. Thanks for reminding. Set my gain 2 years ago to 10 and forgot about it.

 

Quote:
Originally Posted by MIKELAP View Post
 

Interesting, more neutral  you say, is that with the Senns and by the way nice aquisition .MK4 has different sound signature ,does that mean better sound quality

 

Thanks, well at the moment I have like no time to listen to it. The MKIVSE may also need to burn in properly. Unfortunately, I don't have the MKIII any more around, so my comparisons any not very accurate. However, I did notice, the MKIVSE sounding more neutral, less "tubey" (less euphonic), a bit brighter, less coulored maybe. When I listened to the 6SN7GT, which sounded quite mellow but detailed before, they now sound like a better match with the HD800s, just more lively. On the other hand, the Tung Sol 5687WA sounded very niche on the MKIII, =, as in very vibrant, but on the MKIVSE, I was rather feeling that I would get a listening fatigue. The slightly darker Siemens 5687WB (supposedly relabelled Raytheon) were a better and good match now. This is all still prelimniary. The only other detail I think I can point is out is that the MKIVSE stage was wider and deeper.

post #8748 of 8749
Quote:
Originally Posted by mordy View Post
 

Have two questions: The unit is rated 0.69A input and 0.625A output. It is getting somewhat warm to the touch, but not hot. Is it safe to use with a PC with a 420W PS?

 

We don't know how much the computer actually draws but I don't think it's safe. 120 V * 0.625 A = 75 VA which is quite a bit less than 420.

 

Quote:
Originally Posted by mordy View Post
 

Well folks, hit a dead end. After some 3-4 hours the transformer suddenly cut out. I assume that the overload circuit was activated.

 

I guess so. Did it reset?

post #8749 of 8749

It could be from the adapters?

 

My C3g's are Dead quiet all the way to the max of the volume pot but occasionally i knocked the adapter out of place and it will hum.

 

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) › Little Dot Tube Amps: Vacuum Tube Rolling Guide