GIESELER Kraftwerk II PSU official release

[Gieseler Audio]

Well I've finally found time to give you some details on the brand new Kraftwerk II power supplies.

The main difference over previous designs is the large iron core choke which goes between the two Nichicon Gold Tune filter capacitors. What this does is remove the nasty saw tooth ripple that you normally have on the output of the main filter capacitor. What is left is a very low level  sinusoidal ripple which is very easy for the regulator to remove.

Also standard for the  Kraftwerk II range is the use of a active synchronous mosfet bridge rectifier.

The main advantage of this is virtually zero diode switching noise which you get with normal bridge rectifiers.

For the record I don't know of any other audio grade PSU that uses this system which is amazing.

Maybe cost is the reason as the Linear Technology  synchronous controller plus mosfets work out to around $25 so many times the price of a normal bridge rectifier.

The other big change is the swap to a custom Japan made 3mm aluminium case with a black powder coated durable finish.

Being 3mm thick it has much better thermal dissipation than the previous Hammond case.

It is a flexible design with selectable output voltages via a rear panel switch.

There are two versions. 12v, 15v, 16v & 18v or 5v, 7V, 9v & 12v.  both priced at $650.

Current rating is 3 Amps on all outputs.

Power is provided an by external EI core Australian approved heavy duty transformer.

The high voltage version uses a Tortech 17v 5A unit & the low voltage version uses a 12v 6A potted unit that you would have seen on my previous Kraftwerk PSU's.

All power supplies come with a high quality 18 AWG 6A rated DC lead  custom fitted with the correct DC plug to suit your device.

The combination of high quality Nichicon Gold Tune capacitors, active bridge rectifier & large iron core choke gives it the ability to produce a very clean DC supply which can really improve the sound of the connected device.

Parts are in stock for both versions & lead time just a few days for building & soak testing.

Enjoy!

 

 

 

 

 

 

This shows just how well the big Hammond choke works at removing ripple.

Both channels of the scope are set to the same level (200mv) 

The yellow trace is across the first filter capacitor.

The blue trace is across the second filter capacitor after the choke.