Carrying on from my earlier review of the Bushmaster but now with a psu from Mark Grant + S-Booster...

Having removed the ferrite clamps from the Bushmaster, the sound quality was reduced. I then attached the linear PSU from Mark Grant and the great sound I was used to earlier had returned, but now to an even higher level. Smoother detail with less digital nasties,a much more well defined bass with vocals sounding more focussed due to better imaging. With this PSU attached it was much easier to hear what Stanley has been stating about the bass-yes it does go very low with definition. I would definitely be keeping this PSU. It's suprisingly large compared to the one supplied in the Bushmaster box and is not one you'd have on show, say like the MCRU one.

From Mark Grant I'd received the linear psu with S-Booster and a separate S-Booster. I tested the S-Booster by itself with the original Beresford PSU and it definitely made an improvement, however the extra outlay for the linear psu with S-Booster is definitely worthwhile.

With the linear PSU in place I began to wonder how it would sound with an extra S-Booster. So I plugged the S-Booster in as well - double boost! In fact that is what the result was. In my system the linear PSU sounds better with 2 S-Boosters! The benefits that the linear PSU brought had been raised to an even higher level. Bass was now even more well defined and the overall sound cleaner and detailed. With this quieter background finer subtle details could be heard.

Having heard this set up, these power ugprades need to stay in place so are definitely recommended. For those who want to start with just the S-Booster can do with the confidence that it can be used with the linear psu as well, should you buy it later. i.e. it won't become an idle part or something you'll need to sell.

Being that the power supply is affecting the sound of the Bushmaster to such an extent I was thinking about the MCRU option, however at £200, scaling up to £370 with the optional extras, this is not something I am not willing to do with a £200 DAC. Yes I do wonder if the MCRU option would sound better in my system but I am very happy with the sound I currently have.

Oh and I even put my ferrite clamps back onto the Mark Grant set up!

Stubies, so my advice is to buy the psu from Mark Grant with an additional S-Booster. If needed, you can always return any of the parts with their money back guarantee. I also noticed that you have a NAD C340. I know they were well reviewed but in my opinion it is not a very revealing amp. In fact I sold the superior C370 in order to move back to my Pioneer A-400!