– My last question is somewhat unrelated. In your opinion, is this a critical difference or connecting the sub via the speaker connection solves this equally well? The Diablo has this functionality but the Kula is more barebones.

I don't expect the 805D's bass to become much deeper with either of the above amps, so adding a sub until I upgrade might be necessary.

– My current speakers are the B&W 805D, which I run together with a sub, as the 805 bass is weak (in my system). – Is the difference between Class AB and D in this case important? I hear the the Kula is as 'analogue'-sounding as anything else, so it may not be a consideration (and it will be cheaper to run). Is it a better investment for the money, in terms of durability, support and flexibility? For the last one (flexibility), I noticed that the Diablo is easy to integrate with my home theatre amps, as it allows HT bypass I am not sure the Kula can do that. speakers like B&W 802D4 or Dynaudio Confidence 40?

– Are they both able to _comfortably_ drive, e.g. So, the main difference I can see is the amplification, 300W vs 150W (both doubling at 4 Ohm) but I don't know what that means in practical terms: I am trying to decide between the two amps mentioned in the Subject, but they both cost a lot of money and I was wondering if, before auditioning them, I could get some advice from this forum.

3/8 in. x 50 ft. diablo 300 ps review