[12796]

Hi,

What are the best options for a fully discrete head amp / dac solution for portable use? Any views on the ibasso d2 boa?

Regards,

Nick.

 

[alphaphoenix]

Very good question. I'm waiting on responses from those in the know.

- David

 

[tenzip]

What source(s) and connections are you planning on using? Also, what 'phones?

 

[12796]

the old top of the range shures - pth 500?

souce would be an iriver with digital output - maybe upgrading to an archos

 

[12796]

the old top of the range shures - pth 500?

souce would be an iriver with digital output - maybe upgrading to an archos

 

[qusp]

ummm, fully discrete portable dacs......

no options AKAIK. even most DIY solutions will use an opamp or 2. and no the D2 is not discrete

 

[12796]

So what are the best sounding opamp based dac / amp portable solutions? Anything a big improvement on the d2?

Regards,

Nick

 

[Edwood]

LOL, well there was the ill-fated mint tin pocket heater Subsonic Gilmore. Of course powering it with batteries was a problem.

 

[Mr C]

check out the thread about the review of 13 portable amp/dac.
The op said that the nuforce icon mobile was bettter than the d2.
And the icon mobile is quite tiny.

 

[deltaydeltax]

I had started designing a Class-A discrete portable amp. The battery life was good enough to listen to two decent length songs. Then...no more sound...insert new batteries...two more songs...insert new batteries...repeat until your fingers fall off from replacing batteries.

 

[diditmyself]

Quote:

Originally Posted by deltaydeltax /img/forum/go_quote.gif I had started designing a Class-A discrete portable amp. The battery life was good enough to listen to two decent length songs. Then...no more sound...insert new batteries...two more songs...insert new batteries...repeat until your fingers fall off from replacing batteries.

Either your amp is unstable or "over biased".

I (almost) always listen through discrete class A portable amps. The battery life is about 5 hours and these amps are all with active ground channel. If you bias the output stage to 20 - 30 mA and use 1000 mA AAAs the runtime is OK. I don't understand why people use 6F22 batteries when DIY'ing.

 

[jonathanjong]

Yea, Mobile small enough for you? If you don't need the DAC section, there's always the Mustang.

 

[Jap]

Quote:

Originally Posted by jonathanjong /img/forum/go_quote.gif Yea, Mobile small enough for you? If you don't need the DAC section, there's always the Mustang.

[size=small]
. . . or he can wait on Phil LaRocco's PortaCode from TriadAudio (Portacode).

EDIT: Updated TriadAudio website link to PortaCode specific link.[/size]

 

[12796]

It seems as if the ibasso d10 and pico amp / dac combinations are well regarded - what are the relative pros and cons of each?

Thanks!