TheBIGKill1998
Head-Fier
- Joined
- Feb 25, 2017
- Posts
- 73
- Likes
- 17
Hello fellow Head-fiers!
I recently got a used little dot 1+ ver. 3.0 from ebay.
Voshkods tubes were included (of course i use em).
Everything is fine and im very happy with its sound, but there is one problem now...
there is a very audible buzzing in the background. It is extremely audible as soon as the music is quiter or if videos i watch have silent parts.
As an Info, im using my little dot with my beyerdynamics dt 770 80 Ohms.
Some things i already tried:
- using a different opamp instead of the stock one (did not help, now i have the lm4562 installed)
- setting the gain lower (by setting jumpers J3 and J4): this helped a bit by making the buzzing quiter, but it is still very audible
Some stuff i observed:
- it buzzes even without an input device plugged in (so its not the fault of my interface or of any other external devices)
- If i use an in line volume control and set the resistance of it to high whilst increasing the volume of the amp, the buzzing vanishes at a certain point. but this technique decreases the audio quality by quite a lot (i dont know whether this is due to the increased resistance or the extreme cheap quality of the volume control unit i used).
- As far as i can tell, its not a 50/60 Hz hum
- using my little speakers (unfortunately i dont know their impedance) with my little dot, there is no audible buzz
Now my questions:
How could i get rid of all this buzzing?
Would a sort of "Headphone attenuator" used directly at the headphone out of the amp help?
In some forums i read that the voshkods are a source of buzzing, is it possible that its their fault?
Thanks for your help, guys!
I recently got a used little dot 1+ ver. 3.0 from ebay.
Voshkods tubes were included (of course i use em).
Everything is fine and im very happy with its sound, but there is one problem now...
there is a very audible buzzing in the background. It is extremely audible as soon as the music is quiter or if videos i watch have silent parts.
As an Info, im using my little dot with my beyerdynamics dt 770 80 Ohms.
Some things i already tried:
- using a different opamp instead of the stock one (did not help, now i have the lm4562 installed)
- setting the gain lower (by setting jumpers J3 and J4): this helped a bit by making the buzzing quiter, but it is still very audible
Some stuff i observed:
- it buzzes even without an input device plugged in (so its not the fault of my interface or of any other external devices)
- If i use an in line volume control and set the resistance of it to high whilst increasing the volume of the amp, the buzzing vanishes at a certain point. but this technique decreases the audio quality by quite a lot (i dont know whether this is due to the increased resistance or the extreme cheap quality of the volume control unit i used).
- As far as i can tell, its not a 50/60 Hz hum
- using my little speakers (unfortunately i dont know their impedance) with my little dot, there is no audible buzz
Now my questions:
How could i get rid of all this buzzing?
Would a sort of "Headphone attenuator" used directly at the headphone out of the amp help?
In some forums i read that the voshkods are a source of buzzing, is it possible that its their fault?
Thanks for your help, guys!
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