I have been using a Kora Eclipse preamp (Siemens gold-pin tubes)with my DNA-225 for just over a month and have been very well pleased. LARGE soundstage and detail. This is a hybrid pre with a SS phono section which also serves my needs quite well. With the excpetion of volume control, the Kora can ONLY be used via the remote control unit. As such, TWO are provided with the preamp.