Maverick Audio TubeMagic A1 (Hybrid Amp) - Discussion and Review Thread
Sep 1, 2014 at 9:04 PM Post #226 of 232

uncola

1000+ Head-Fier
Joined
Oct 5, 2007
Posts
1,276
Likes
155
Let me go test it right now and I'll write my experience
Ok I tested the line-in using my phone as a source, no issues with left and right channels having differing volume levels.  Which is funny because using my usb dac with the rca in ports on the back does give me channel imbalance issues on the first two clicks of the volume pot.  But my phone is a weaker source so I am several clicks above 0 on the volume pot where there's no imbalance at all.  The way I understand it, it's normal for an analog potentiometer to have some imbalance near 0 volume.. and my usb dac does 2.1v out so that makes sense to me.. 
 
stupid video I made
 
Sep 1, 2014 at 11:30 PM Post #227 of 232

BeatsWork

1000+ Head-Fier
Joined
Dec 15, 2011
Posts
1,011
Likes
212
  Let me go test it right now and I'll write my experience
Ok I tested the line-in using my phone as a source, no issues with left and right channels having differing volume levels.  Which is funny because using my usb dac with the rca in ports on the back does give me channel imbalance issues on the first two clicks of the volume pot.  But my phone is a weaker source so I am several clicks above 0 on the volume pot where there's no imbalance at all.  The way I understand it, it's normal for an analog potentiometer to have some imbalance near 0 volume.. and my usb dac does 2.1v out so that makes sense to me.. 
 
stupid video I made


Hmmm. Looks like I've got a bad socket then. It's an enclosed component so I may just remove and re-wire with two more RCA inputs so that I can switch between 2 DACS.   Thanks for checking-appreciated!
 
Oct 11, 2014 at 6:06 AM Post #229 of 232

IYAshike

100+ Head-Fier
Joined
Jul 22, 2013
Posts
291
Likes
65
Location
London, UK.
l came to the conclusion that it is not about the impedance of the HP, but the sensibility. For example, with the Beyers DT-770 PRO (rated at 96db) the hum is hardly audible (although it is there). 
 
The HE-500 are rated at 89db; the HE-400 are 92.5db... 
 
In any case, some people seem not to have hum, at all. lt may [size=13.1428575515747px]also[/size] be the tube you get (some might be better than others). 
 
l bought a new DAC/amp, so l haven't listened to the A1/D2 since July. l will sell it sooner or later, l guess...
 
Nov 11, 2014 at 4:40 PM Post #230 of 232

Asudef

New Head-Fier
Joined
Mar 22, 2010
Posts
11
Likes
0
I'm highly considering this amp to drive my bookshelf speakers but they're rated at 87db @ 4Ω and 100W. The manual specifies at least 50-100W but I read that Wattage doesn't really mean that much.
Are there similarly priced tube amps that could drive my speakers?
 
Would this amp drive my speakers well? The room is only about 160sf in size.
How does this sound with the D2 DAC?
 
Nov 12, 2014 at 1:49 AM Post #231 of 232

uncola

1000+ Head-Fier
Joined
Oct 5, 2007
Posts
1,276
Likes
155
I use psb image b5 bookshelf speakers that are 89db and 6 ohm nominal with no problem..  haven't tried it with any 4 ohm speakers though
 
Mar 6, 2016 at 7:10 PM Post #232 of 232

Jubijub

New Head-Fier
Joined
Mar 6, 2016
Posts
13
Likes
15
hello,
 
I'm considering this amp with a MavAudio D2 plus as a DAC, using a SoundBlaster Z as the source/DSP.
 
I want to drive good headphones (not bought yet, considering Sennheiser HD600 or better), and my speakers, which are already amplified. (i use them 10% of the time, but still)
 
Is there a way I can get the signal out to my speakers so that : 
- I don't fry them :D (they accept jack 3.5mm, but I assume I can use a simple converter RCA/Jack)
- plugging headphones disable the sound on the speakers
 

Users who are viewing this thread

Top