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  #1  
Old 03-18-2015, 10:49 PM
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BruceBanner BruceBanner is offline
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Default Portable Speaker/Source Switch.

I'll get to my question but perhaps this short background story will amuse you all...

As most of you know I have fallen in love with my 'boutique' DAP the Alien Shozy. A couple of days ago I received a Soundmagic A10 portable headphone amp. I purchased it for the purpose of seeing if I could gain that teeny tiny bit more volume (without distortion) for my PFE 232's as well as seeing if it could drive my Samson SR950 can's sufficiently (it can't quite).
It's been a success on the volume front, I can (for example) now listen to piano pieces etc whereby the notes resonating distortion is less but at similar volumes to before (unamped).

The curious thing about the A10 is that it doesn't alter the sound signature too much from the Shozy, I believe they both carry a very similar frequency response (which is a mild V shape). The amp is also super silent and carries virtually no background noise (another thing it has in common with the Shozy).

The interesting thing here is that the A10 comes with a Bass switch, it doesn't exaggerate the mids very much but instead boosts the lower frequencies. Upon testing on certain tracks (with the Shozy) it can come as a pleasant welcome, helping to drive some albums lacking in Bass, whereas at other times it's complete overkill.

But the A10 with the Bass switch off is still giving the Shozy a mild boost in bass, so much that distortion can occur on certain tracks that are bass heavy to begin with, in this regard it would be better to bypass the A10 entirely and stay with the Shozy alone.

So herein comes the idea of a small portable speaker switch that I might attach to my rig that allows sound to come through direct from shozy and also (by flicking the switch) through the A10 amp.

But you can see what's happening here....

Bruce is slipping back into DSP/EQ land... :S

By doing this I would essentially have given myself 2 levels of Bass. The Shozy is really 'normal' or off mode, connect the A10 is level 1 Bass, and flicking the Bass switch on the A10 puts it into level 3.

I can't lie to myself, there are some tracks that sound better without the amp, with the amp with bass switch off, and then with the amp and bass switch on lol.

But i can't stress this enough... I still believe that the Shozy on it's own is the best sound signature balance I have found that makes the majority of my music collection sing to the best of it's ability.

But the idea of a portable switch got me thinking...

Perhaps it's time for me to try and recreate the Shozy sound settings with my Cowon i9+ (or E3 when it arrives). Perhaps I can get scarily close to the same sound as a Shozy on a Cowon, and then of course reap all the benefits of a Cowon such as display, battery life, smaller device etc.

Of course I'm not expecting to beat the clean background/no hiss of the Alien, but it's an interesting experiment I feel I want to give a go. Eventually (hopefully) even doing a blind test whereby someone else throws the switch between two devices and I try and tell which is which etc.

So the portable switch would have to work both ways, for two sound outputs as well as two source inputs.

Has anyone heard of such a device/switch?

The closest thing I think I have found is this at B&H;

http://www.bhphotovideo.com/c/produc...Audio_MP3.html


Thoughts?
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  #2  
Old 03-23-2015, 03:03 AM
fohfoh fohfoh is offline
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Question: Why does it need two sound outputs? I assume you would want to use the same headphone for AB testing. Unless I'm out to lunch what the out put is. I would assume the 2 inputs (the shozy + cowon) is what you're actually interested in. But if you really needed two outputs... would something like this work?

http://www.amazon.ca/Everydaysource®...152BTM9NTWJV2P

I'm still a little confused at your experiment and how it differs from a traditional AB testing.
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Old 03-25-2015, 02:54 PM
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Yes it's the two sources that are most important. I also want to see if I can rig together something that has the Shozy + Amp (A10), but I can flick a switch and bypass the amp entirely (therefore just hear the Shozy on it's own), but with one pair of headphones. I haven't though this one through clearly tho and am not sure this is possible yet lol.
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Old 03-30-2015, 01:07 AM
fohfoh fohfoh is offline
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Can you use a headphone jack splitter out of the Shozy, one side direct to switch, the other side to the amp and the amp output to the switch?
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  #5  
Old 03-30-2015, 01:45 AM
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Quote:
Originally Posted by fohfoh View Post
Can you use a headphone jack splitter out of the Shozy, one side direct to switch, the other side to the amp and the amp output to the switch?
Yeh i think that will be the idea. I'm still waiting for the switch to arrive, no doubt I will take a crazy pic of teh mad rig lol
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