The 12v 4A Kraftwerk PSU has proven to be very popular especially with Gross & Klein III owners as it offers a nice upgrade in audio performance. As you know I am constantly looking at ways to improve things but the 12v 4A Kraftwerk has proven to be a hard act to follow. Well finally after a lot of R&D I have come up with some slightly improved versions. 1. Nichicon Gold Tune (NGT) 2. Nichicon Gold Tune Enhanced (NGTE) Now it is not a big audible difference but definitely not

Just a quick bit of info as to why power supplies in audio equipment can have an effect on sound quality. All my products run from AC & are supplied with an Australian approved external transformer. They sound very good with the supplied transformer & I would normally not recommend changing it. However recently & just on a whim I tried powering a Gross DAC from my Kraftwerk 12v 4A PSU. Well I was gobsmacked at the improvement in sound quality. How can this be I thought as the

Hi everyone, I have been working on a new headphone Amplifier which is finally ready - in stock & priced at $600. Additionally as it includes RCA line outputs, it can also function as a basic preamp. Technical highlights. Power supply - I have gone totally overboard here as in my opinion the power supply has a major effect on the sound quality. Power diodes are a special low radiated noise, very soft recovery types. Main filter capacitance is a massive 40,000uf using the Nich

This DAC is based on the brand new AK4493EQ chip which has just been released. It is the replacement for the AK4490EQ which was released in 2014. There are a number of improvements over the 4490 including lower THD, higher S/N & full DSD512 decoding. The design is identical to the Gross DAC except using the AK4493 (Gross uses AK4497) & slightly smaller Jensen output transformers. Due to these two changes I can reduce the price quite a bit vs the Gross. On paper the AK4497 sti

This is a very basic USB only DAC based on a minimalistic high quality Jensen transformer output stage. Its design is inspired from a scaled down version of the Fein/Gross DAC's. USB input is via a Amanero Combo 384 board which is powered with a dedicated ultra low noise PSU so it does not require USB input power to operate. The DAC chip is a premium AKM AK4495EQ. I actually prefer the sound of this chip over the more commonly used AK4490EQ (Klein I & II) It has four selectab

This is a brand new design using a Analog Devices fast transient response low noise regulator. It has short circuit & thermal over load protection. It runs from 16v 2.5A external EI core transformer. EI core transformers have much lower bandwidth than the more common toroidal types so are better for digital equipment as they let less mains noise through. The bridge rectifier is a discreet type using very high spec low EMR Schottky diodes. This is followed with a cap, choke, c

This is a brand new design using a Analog Devices fast transient response low noise regulator. It has short circuit & thermal over load protection. It runs from 12v 6A potted external EI core transformer. EI core transformers have much lower bandwidth than the more common toroidal types so are better for digital equipment as they let less mains noise through. The bridge rectifier is a discreet type using very high spec low EMR Schottky diodes. This is followed with a cap, cho

This is a brand new design using dual Analog Devices fast transient response low noise regulators. Using dual parallel regulators has enable the noise level to reduced down to around 12 uV RMS. The regulators are state of the art with some amazing features. eg. Actual semiconductor die temperature monitoring & fully adjustable current limiting. The output is user adjustable via a rear panel voltage selector switch. It has short circuit & thermal over load protection. It runs

This uses an Analog Devices fast transient response low noise regulator. It has short circuit & thermal over load protection. The output voltage is user configurable to 5,7,8 or 9v with a rear panel selector switch. It runs from a 9v 2A external EI core transformer. EI core transformers have much lower bandwidth than the more common toroidal types so are better for digital equipment as they let less mains noise through. The bridge rectifier is a discreet type using very hig

'Groß' - meaning 'big', relates to our classic series of 'Klein' or 'small' DACS. This DAC is based on the AKM4497EQ DAC chip running in software mode with a onboard micro controller. It is available in a USB only or a 3 - input version which is USB, coax & optical. The USB input is asynchronous using an Amanero Combo 384 USB board. This is separately powered with its own ultra low noise PSU so does not require USB input power to operate. The parts quality is very high and