NEWS: PortaCode : The Utimate Battery Powered Headphone Amp - Page 2

Really? Its the best implemented bass boost ever _ highly effective IMO, and I wish more amps had it...

So does anyone have a website for his Triad audio? I can't seem to find one.

Triadaudio.net.

I will say that while I love my Lisa III, I also am not in the market for a $2k (trans) portable, now or ever, no matter how amazing. Heck, $1200 is the most I have ever spent on a headphone amp of any kind.

But if the logic is that this is just a world-class headphone amp that happens to be battery powered, then it should be judged against home amps only, especially if it is not compromised in any way by being battery operated.

yup the PPA bass boost I tried worked very well, subtle but effective

Two thumbs up for uncle Phil...!!!!

Is the bass boost actually in the signal path ?

this amp is indeed just a world-class headphone amp that happens to be battery powered and happens to be transportable as well, and i agree that it should be judged against home amps or any high end amp for that matter.

here is a quote from Phil himself

" This Amplifier will find use whenever the absolute state of the art in Headphone Amplification for Dynamic headphones is required, both indoors as well as out in the Field. The Portable Headcode will also serve as the finest in Dynamic Headphone Amplification for stationary installations in the company of the finest in auxiliary components. In purely stationary applications the Portacode offers a desirable feature that’s absent on all other Ultra high End Headphone Amplifiers and this being batteries Included. "

" With our AC power grid becoming more and more contaminated as time progresses Audiophiles are discovering how battery Power can free there music from the loss of detail and added noise that Equipment powered from the AC Mains contain. With the Portacode you can leave the Amplifier always connected to the AC mains to maintain the battery yet when serious listening is involved the External AC power can be disconnected and the amp operated on batteries for Clean power, since the battery is contained with in the Amplifiers case there is No umbilical Power cable to carry EMI and RFI into the amplifiers shielded Enclosure and no Inter equipment ground loops developing in the AC mains ground, Just simply reconnect the AC power when finished so as to freshen up the Batteries for next listening session "

" The Portable Headcode Triad is simply the owner acclaimed Headcode TRIAD home Amplifier reduced in size and powered by batteries. The Bias current remains the same as the previous Home Headcode; the circuitry remains substantially the same however with an Optimized Electronic parts compliment as the previous Headcode "

How can bass boost NOT be in the signal path???

the bass boast from Phil designs is not on the signal path, and therefore does not effect the sound aside from a small boast in the very low frequencies.

I'm no engineer, but I still don't understand how you can have a bass boost work at all if it isn't in the signal path when its being used to boost bass. I can understand how it could be removed from the signal path when its in the zero position, but when its active, wouldn't it by necessity be in the signal path?

not so long ago i asked myself the same question about the bass boast, therefore asked Phil about it, i got a reply that i don't fully remember and i guess that i did fully understand , but i am sure Phil will find the time to answer that question on this thread.

In the PPA the bassboost is in the feedback loop IIRC, is not directly on the signal path, so you have the signal, and the feedback is what creates the effect, not sure how it is implemented in the code, but in any event it is optional...you could choose to have it or not...

in case i wasn't so clear, what i meant is that i did not fully understand, and that is the reason i can not pass the explanation forward.

Are there any ideas on what it will look like?

Jam

OK, I guess I could see how that would make sense, although being in the feedback loop would eliminate its impact on the sound. Nonetheless, as I have said, I love Phil's implementation of bass boost. The flexibility that it offers clearly outweighs what little sonic penalty, if any, that it might impart.