With mine - flawlessly.

It was 30 GB 5 or 5.5 gen Ipod?

and it holds me back... 'cos I need also digital out (i'll wait till dual boot will be ready).

...and also with DAC like CLAS or Pure i20?

Neither...

Rockbox.org still call it "unusable"

You can baypass Pure DAC connecting Pure with other  DAC via coax(optical) out.

Quote: I have over 13.000 songs on mine 7th gen 240GB, so it's no problem at all :)

K550 souds great straight from touch 4G HPO (or classic 7th gen).

Quote: You have definitely bad copy of Companion if you hear SSSSSSSSSSS all the time on K550. Or bad source.    

So this hdd http://www.ebay.com/itm/Toshiba-240GB-1-8-Hard-Drive-MK2431GAH-iPod-Macbook-/260877204095?pt=LH_DefaultDomain_2&hash=item3cbd7e3a7f#ht_3394wt_1270 will be ok for ipod classic (2009) without any adapters??????

240 GB Toshiba is PATA HDD, so how it can fit to late 2009 classic if classic has ZIF interface? Are there any PATA/ZIF adapters?

Quote: Yes, with senn IE8 cable. Original cable was crappy  (sticky) and pilot do not working properly with T4G.

  T4G+BCDDE     Classic 160GB + K550

Volume control also works on ipod touch. I thougt that it is not working, because when you pressing volume button on pure's remote -  volume scale doesn't appear on iPod screen and only volume icon is visible. In fact it works and if you press volume button several times i-20 is playing much...