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Showing 1 of 215 conversations about:
livingspeedbump
6723
KeyChatter’s Owner and Editor-in-Chief
May 10, 2017
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bmbishop
10
May 10, 2017
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livingspeedbumpYou mention some other lower end tube amps have a buzz or hum. I also got the Little Dot Mkii from Massdrop and have noticed buzzing/humming that increases with volume.
I love the amp too! It sounds great with the HD6XX, but the hum can be annoying. Do you by chance know much more about that symptom and what usually causes it? Thanks in advance!
Gugliermo
1317
May 14, 2017
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bmbishopReverse the tubes and listen for the buzz volume reversing too. It is most likely the tubes. Get some NOS tubes from a reputable dealer. These units do not have design flaws that create buzzing. I purchase mine from audiotubes.com, they are hand tested and guaranteed, and priced very reasonably.
LukeXtreme
8
Jul 18, 2018
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livingspeedbumpHi,
I am also planning on using RCA Outs for connection with amped (active) speakers.
The manual of the headphone amp device says the below plus suggests you should power up the amp linked to the pre-amp outs first and wait a minute.
Pre-Amplifier output impedance: 600 ohms Pre-Amplifier Gain: 3-10x (also controlled via gain switches) Pre-Amplifier Voltage: 10V RMS Pre-Amplification circuit includes both driver and power tubes
I am a bit confused, is 600OHM ok for active speakers? Are speakers not 4-8Ohms normally, is feeding them though 600 Ohms is fine? What active speakears are you using? I am thinking of using Q Acoustics 3020i, Audioengine A5+ or KRK RP5 G3/G5 Black. Last think I want is to burn something ;)
Do you get sound off both headphones and pre-amp? If not, do you need to unplug headphones to make the pre-amp rca outs to work please?
Thanks for any help here! My Sound Blaster Z has already got any outs I can use for front speakers taken so that's my only way.
I am also planning on using RCA Outs for connection with amped (active) speakers.
The manual of the headphone amp device says the below plus suggests you should power up the amp linked to the pre-amp outs first and wait a minute.
Pre-Amplifier output impedance: 600 ohms Pre-Amplifier Gain: 3-10x (also controlled via gain switches) Pre-Amplifier Voltage: 10V RMS Pre-Amplification circuit includes both driver and power tubes
I am a bit confused, is 600OHM ok for active speakers? Are speakers not 4-8Ohms normally, is feeding them though 600 Ohms is fine? What active speakears are you using? I am thinking of using Q Acoustics 3020i, Audioengine A5+ or KRK RP5 G3/G5 Black. Last think I want is to burn something ;)
Do you get sound off both headphones and pre-amp? If not, do you need to unplug headphones to make the pre-amp rca outs to work please?
Thanks for any help here! My Sound Blaster Z has already got any outs I can use for front speakers taken so that's my only way.
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Another thing I like about this is the RCA in/out along with the 1/4 heaphone output. I have this in line between my powered speakers. It not only adds a little warmth to the sound, but it also provides me with a convenient volume knob. I do most of my listening on headphones still (generally HD6XX).
The Little Dot is cheap. Versatile. Quality. Absolutely love this guy and for the price can't do anything but recommend it.