Friday, November 10, 2017

USB Cable Length Test

Introduction

Have you ever wondered what are the effects of your USB cable length on sonics ? Let's find out.



I assembled three audiophile USB cables in different lengths.

1. Curious Cable (1.2m and 0.2m)
2. Wireworld Platinum Starlight Series 6 (2m and 5m)
3. Blackcat Cable Indigo Prototype (1m and 0.5m)

Since my Melco NAS is placed a distance away from my DAC, I will run a high-quality stock USB cable from my NAS to an Uptone Regen. The cables on test will then be used to connect the Regen to my DAC.

Stay tuned ... 

Monday, October 9, 2017

Press Release - Nagra HD Preamp

Audio Technology Switzerland is proud to announce it is releasing its most ambitious preamplifier ever: the new NAGRA HD PREAMP.

Rocky Mountain Audio Fest, Denver, USA - Friday the 6th October 2017. The Swiss company announces it is releasing a new preamplifier to compliment the HD range, that will be simply called the HD PREAMP.  

Nagra is demonstrating the new HD PREAMP at the RMAF in room 1030.
_________________________________________________________________________

World announcement of the NAGRA HD PREAMP, almost twenty years after the NAGRA PL-P preamplifier was released on the high-end market.

In 1998, NAGRA Audio division introduced its very first high-end consumer product after more than 40 years of continuous success in the professional recording market. The PL-P preamplifier was a class A triode-based line and phono preamplifier that immediately set new standards in sound reproduction.

In many ways, the HD PREAMP’s design started from a white page. Every aspect and step in the design process involved research to find the most elegant solution to accurately and faithfully convey the music from your sources to the amplifier. As a result, the HD PREAMP includes several patent pending technologies that are taking the music listening experience to new height.

Nagra unique approach to designing audio products takes advantage of 65 years of experience in the field, a large and skilled R&D group as well as extensive listening sessions; the result is often very organic and natural sounding. In order for the final product to be faithful to the theoretical work, custom made high-end components are carefully selected. The unit includes in-house custom-made components like audio transformers.

The volume control is a patent pending technology that allows perfect level matching with a much more transparent sound compared to potentiometers and switch resistor technology, because there is no attenuation of the input signal, just an automatic selection of a tap on the Nagra custom output transformers.

As expected with such high quality electronics, the sophisticated power supply will be located in a separate chassis. Like the audio circuit, it uses utmost quality components that are specified for extreme applications. Very much like the PL-P made use of batteries to isolate the unit from external interferences, the HD PREAMP’s power supply uses a unique virtual battery technology that offer superior result to a conventional battery, without the inconvenience of dealing with charging time and battery life. Consequently, the noise floor level at the preamplifier reaches uncharted territories; it is the lowest ever measured with a NAGRA product (See attached).

The construction of the chassis of the HD PREAMP and its power supply gets rid of the influence of external disturbances (vibration and electrical) and drastically reduces proper resonances. As a result, the HD PREAMP promises to set new standards for preamplification as did the PL-P twenty years ago.
First units will be delivered by the end of November. The suggested retail price list in the USA is 59’500 US$.


Contact
Matthieu Latour, Marketing Director, matthieu.latour@nagraaudio.com

About ATS - Audio Technology Switzerland
Founded in 1951 by Stefan Kudelski, NAGRA has been designing some of the most influencing equipment in the audio industry. From the Oscar ® Awards winning NAGRA professional tape recorders to the rewarded NAGRA HD electronics, the company has continuously perpetuated the utmost excellence in electronics design and manufacturing. In 2012, Audio Technology Switzerland S.A. formerly Nagra Audio division is created. Still largely owned by the Kudelski family, Audio Technology Switzerland designs, manufactures and market NAGRA professional, high-end audio and security products. It is continuing the tradition of sophistication and originality that has established the prestige of the NAGRA brand all around the world for over 60 years.








By the way guys, if that didn't get you all excited, you should get professional help from your nearest audio clinic or dare I say, Nagra dealer.

Acuhorn - New products from Poland


Acuhorn RATE class-D amplifier  2500 EUR
www.acuhorn.pl/rate.htm

Features


Monolithic class-d stereo amplifier chip by texas instruments
total harmonic distortion + noise 0.005%
signal to noise ratio 111dB
dynamic range 115dB
protection of both amplifier and speakers
the audiophile selection of each component is a listening session
stepped attenuators are the most preferred solution in high end audio
high quality precision 0.1% thin film Nichrome chip resistors
the amplifier input is isolated high impedance input Lundahl transformers
extreme audio path high quality and transparent sounding
power supply is the best Vicorpower modules
DC-DC converters high frequency Mhz switching
autoranging 90-264Vac network voltage, for worldwide use

Acuhorn R2R hi-tech streamer 3600 EUR
www.acuhorn.pl/r2r.htm

Features


R2R ladder 28 bit resolution 384Khz dac
loaded FPGA Spartan 6 technology oversampling up to 3.072Mhz
signal to noise ratio 127dB
automatic input selection I2S or SPDIF
R-2R direct output and buffered output for headphones
server runs on Raspberry Pi for I2S interface
compatible with all formats music: MP3, FLAC, WAV, AAC, ALAC, DSD
UPNP\DLNA, Airplay, Spotify and Web-Radios, etc
controlled wifi from remote running on smartphones, tablets, notebooks
MoOde web interface to control playback and settings
power supply is the best Vicorpower modules
DC-DC converters high frequency Mhz switching
autoranging 90-264Vac network voltage, for worldwide use









For more information, please contact :-

Acuhorn
Krtuska 243A
Gdansk 80-125
Poland
phone 0048 737476346
www.acuhorn.pl
email: info@acuhorn.pl