Sure they are better quality and more sophisticated that john's era but on the joseph's power supply i think you pay more for the cable!   The psu i had is the 3rd of this post :http://www.head-fi.org/t/647205/grado-hpa-1-gs1000i/30#post_12300630

No it has a "brick" power supply! It has smooth regulation but made an annoying external noise. I would only look for buying the Joseph Grado psu only cause i'm curius what's inside.

Its 5771,the 46 is the match number the plate and chassis, not so early product but again the production of the PH-1 was not so. I think alittle more than 10000 units and then it was obsolete for some reason. I used to own an PH1 for sometime but I sold it cause built a replica with "battery"...

PH-1 production started at 1999. you can check the serial number of your preamp. Did you got it brand new?

This is actually a HPA-1/2 AC adapter!! The only changed the plug to make it fit on the PH-1!!   Anyway as I said that's the main concept behind it . I never tried but I do believe if there any noise this will distort the audio signal abit!

Audio signals (ac) are actually converted power signals (dc) so if we suppose that the JGS cable has very clear conductors and is well shielded, the main power that delivers is clear so then your audio signal will be clear! Its a main philosophy behind it but its true!   btw can you post a...

Its a Dutch store! I got mine after asking help from a dutch friend! If you are really willing to buy them my friend can help you I think!

Liar..!!.. there are NOT porno pics!! My HPA-2 has its covers on and sitting on its own place!

Here they are! In the meantime i was listening lps with my modified Grado Platinum!            

I prefer the Flats instead the L or S , they're more comfortable and they give me the feeling that the sound is more "flat" (closer to the HP1000)!   I'm looking for a "backup" pair so if you're willing to let them go just ket me know :-)

Thanks! Actually I was abit more Lucky cause I built my system in less than month! While I was making a deal for my HP-2, I became a deal for the HPA-2! When both arrived I realize that "something" is missing. A week later the cable arrived! I'll post some pics tomorrow !   I use Batteries...

Yes its a nice quality cable to me, i'm not a cable expert but I bought it more to complete my Joseph Grado Signature system (cable ,HPA-2, HP-2)!

  Happy to sse that! I heard about these phones sometime ago and looked if i can find a pair but i couldn't :-(

Yes it is! I recently got mine (2m) from that store.

  ...too bad :-( 

Indeed the "i" driver are more bright and fatiguing to my ears too but that's the "concept" of the 8-conductor cable! I used to own many "i" series phones (60,80,125,225,rs1,gs1000) and after listening the HP1000 and the first era or John Grado phones (60,125,gs1000) I prefer them a lot more...

Longer cable have more impedance and also more capacitance due to parallel wires. If high frequencies are effected is caused of the higher capacitance of the cable!    Side note: Some where telling that the "i" series where  a kind more controlled at high frequencies. That was caused because...

    When i paired my GS1000 with my HPA2 liked the sound but there was an annoying hiss,since then i only use it with my HP2 and my SR60(!!)..both with flat pads! Have a look at this DAC,, Its a PCM2706+CS4344, Very Cheap, simple and nice look and sound (at least better than direct phones out...

Sound nice with all the grado to me, from sr60 to gs1000.

It will but best results when I use my hpa-2 .

NOT True! For more than 60 years , the Grado family has been crafting CARTRIDGES by hand , They first crafted headphones at 1989 the famous HP1000 and thats 27 years nomore! As long for adverstising also not true but thats another story....   One more thing to say, i would prefer in all these...

I like these more and probably the are heavy.. are these magnum drivers?

I'm also between modifing my SR60 or just keep them stock! Do you have any pic of the cups?

Me too , i buy most cause i like to try their sound, I recently bought a very early SR60 with "pink" drivers and i like them alot! Still haven't try any of the "e" series....