D'Agastino Momentum vs Dartzeel NHB108

I've had two Dartzeel 108 amps (at slightly different times), the first a little older but current and the second brand new (used with several preamps including the Dartzeel preamp). I would opt for the new D'Agostino S250 (or M400 monos) over the Dartzeel stereo amp. The 458 Dartzeel amps and a totally different story.

Ayre KXR-20 and MXR-20 is now my solid state of choice. The only other change I'd consider at the moment would be the M400 Dag monos.

If you're looking for muscle the momentum suits that very well. If you're looking for finesse and realism, choose the DarTZeel.

 I have had both here at the same time and did numerous comparisons.  What speakers will you be using?

 As the distributor, it is obvious that I love DarTZeel, but I do respect and enjoy the power of the D'Agostino.

Two very different amps, even though both are solid state. The Dartzeel can't push current like the D'Ago can. The better sound may depend on what speaker are going to be used.

Dartzeel:   Measured 160W into 8 ohms  230W into 4 ohms  but 162W into 2 ohms. This shows weakness of current delivery into 2ohms not even reaching the 4ohm wattage 
  
D'Ago:  Momentum comfortably exceeded that rating, clipping at 405W into 8 ohms 640W into 4 ohms while into 2 ohms  the amplifier puts out 1115W
This shows great current delivery into 2ohms almost doubling the 4ohm wattage.

So for speakers like Wilsons, bigger B&W 8** series ect you'd go for the D'Ago.

Cheers George

George I would put the Rockport's along with your Wilson and B & W speakers.