First Watt J2 & speaker pairing ?

I'm trying to decide if the J2 is worth the effort ?  All reviews are favorable , some even glorify the sonic nature of this 25 watt amp.  I'd like to see what the deal is with a class A amp - it seems like it's all I could ask for in an amp * Except and this is a big exception -the need for highly efficient speakers to appreciate the amp.

  Don't mind shopping for another pair of speakers  but  realistic choices seem so limited.  Zu audio seems to be a big favorite pairing .

 I'm running a Rogue audio cronus mag lll with Dahlquist DQ 10 speakers ( older speakers ) also have  Spendor s5e's    Don't think either will ideal match with J2

 Really enjoy the open ,wide range of the DQ10's 

Any suggestions are most welcome 

thanks in advance