AUDIO-GD NFB-11.38 DAC ES9038PRO / Pre / Headphone amplifier DSD 32bit / 384kHz Femto

AUDIO-GD NFB-11.38 DAC ES9038 / Pre / Headphone amplifier DSD 32bit / 384kHz Femto
10%
The Audio-GD NFB returns with several notable evolutions. Its digital / analog conversion stage works now thanks to a ES9038Pro chip, which is close to the top of decoding technology for a compact and very efficient DAC.

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Shipping date: 23-05-2019.

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AUDIO-GD NFB-11.38 2019 performance edition

DAC / preamplifier / headphone amplifier

Audio GD NFB November 38

Version 2019 -  Performance Edition

La version 2019 du NFB11.38 se base bien entendu sur la version 2018, tout en apportant des améliorations concernant la qualité de restitution sonore. Elle intègre ainsi 2 alimentations ultra faible bruit isolées pour pour alimenter les canaux gauche et droit du DAC ES9038Pro. Cette amélioration permet notamment d'obtenir une plus grande transparence et une image sonore plsu large, tout en gardant la neutralité caractéristique de l'appareil.

The Audio-GD NFB returns with several notable evolutions. Its digital / analog conversion stage works now thanks to a ES9038Pro chip, which is close to the top of decoding technology for a compact and very efficient DAC.

In its 11.38 version, the NFB receives a Femto crystal. The global system stability is thereby increased and it provides access to ever more impressive levels of accuracy in terms of details of the soundstage, stereo depth  and frequency balance.

More than ever, the NFB is a very versatile tool, which carries with precision and accuracy the functions of DAC, preamp and headphone amplifier. To complete the experience, it enjoys a double stage power-supply, multiple selectable digital filters and a MCU controller.

Saber ES9038Pro

The NFB-11.38 embeds now a DAC ESS ES9038Pro for converting the digital signals into analog. This allows a sampling rate support output up to 32bit / 384kHz and a high-end S/N ratio of 120dB.

This change in chip also supports a broad dynamic range, capable of reaching 140dB.

ess 9038 pro

Crystal Femto

Crystal Audio-gd femto audiphonics

Using a crystal Femto significantly reduces jitter (ultra-low jitter) and will significantly prevent the inaccuracies and parasites at the critical time of decoding by the ES9038 Saber chip.

High stability in processing data that promotes the capabilities of the NFB 11.38 and allows it to achieve impressive sound clarity levels.

CHA & Non-Feedback

discrete amplification stage

In addition to supporting the DSD / DXD and sample rates up to 32bit / 384kHz, the 11.38 NFB takes advantage of the technology NFB (No-Feedback) developed by Audio-GD on its ACSS stage.

It operates as a discrete preamp stage that is totally free of operational amplifiers and other gain stage. With this construction, the signal is processed with high purity without unnecessary coloring of the sound, making it an element of choice for High Fidelity usage.

384 Combo USB Amanero

Output AudioLR nfb11.38

Equipped with a USB interface Amanero Combo 384 rather than USB32, it offers both optimum performance and compatibility. It therefore supports sample rates up to 32bit / 384kHz and the DXD, and DSD64 DSD128 (DSD256 DSD512 and Windows) .Its design allows it to enjoy a very low jitter.

Warning, a driver is required to run Windows. Linux and MacOS operating systems will be automatically recognized.


Specifications
S / N ratio120 dB
Output LevelHeadphone Output: 10V RMS
Variable output mode: 5V (max)
Fashion fixed output: 2.5V Rms
output (headphone)3500mW / 25 ohms
1800mW / 50 ohms
900mW / 100 ohms
300mW / 300 ohms
150mW / 600 ohms
output impedance2 ohm / Headphone
2 ohm / output DAC
Support OSWindows, Mac, Linux
supported Fréq.EchantillonnageUSB: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4, 192kHz, 352.8kHz, 384kHz
Coaxial: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4, 192kHz
Optical: 44.1kHz, 48kHz, 88.2kHz, 96kHz
Frequency band20Hz-20KHz (-0.2 dB)
3Hz-350kHz (analog portion)
Food220-240V AC 50/60 Hz
Power consumption12W
Total weight2.2kg
Dimensions180x220x55
HousingAluminum with feet
Accessoriesx1 Power Cable
USB cable x1

To the DAC NFB-11 variable output position or fixed output (volume)

Configuration Mode fixed volume / variable volume jumper

By default, the NFB-11 is configured as a variable volume (adjustable volume). The apparatus is nevertheless designed to pass mode fixed volume. To do this, simply change the position of selection jumper. The user can thus variable output between a helmet and DAC (DAC + preamp) and a fixed output.

Warning do not position the NFB-11 in a fixed position when you connect it to a power amplifier with no volume control.

The headphone output is still affected by the volume control.

Setting up filters

warm jumpers filters

Particularly useful for use with headphones to the sound very clear, two other jumper used to make the sound warmer. If both are turned on, the NFB-11 will sound less bright and less aggressive in blast treble.

digital filters

Specific filters DSD / PCM are accessible in the same way. Simply connect jumpers in the correct sequence to activate the filter you like. 

Here is the mapping configuration based on the desired filters;


PCM: FIR0, FIR1, FIR2
Fast roll-off, Linear:Push Into Push Into Push Into
Slow roll-off, Linear:Push Into Into Push Pull Off
Fast roll-off, Minimum:Push Into Push Pull Off Into
Slow roll-off, Minimum:Push Pull Off Into Pull Off
Fast roll-off, Hybrid:Pull Off Off Into Push Pull
Brickwall filter:Pull Off Pull Off Pull Off
 
Data sheet
InputSPDIF
InputUSB-B
InputUSB Amanero
InputOptical
InputUSB 2.0
OutputACSS
OutputRCA
DAC ChipES0938PRO
Max sampling rateDSD512
Max sampling rate384kHz
ColorBlack
Components / ChipES9038PRO
Channel2 channels (Stereo)
 
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Average votes
5.0 / 5
1 reviews
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 5/5
Date :
Impressionnant
Le dernier né de la gamme NFB 11 affiche des prestations de haut vol. (je l'utilise en tant que DAC branché à mes enceintes)
Pour imager, si le NFB 11.28 m'avait mis une gifle, ce NFB 11.38 m'a mis une grosse claque !
La musique délivrée devient physique , les enceintes semblent disparaître et les musiciens prennent place dans la pièce d'écoute ..
Tout est plus clair, plus précis , le son a plus d'impact , le registre grave notamment affiche une belle présence, sur certains enregistrements ça remue les tripes !
La scène sonore est vaste , chaque instrument est localisable et les timbres semblent réalistes. Les voix paraissent également naturelles avec peu de sibilances.

Amateurs de douceur, de finesse, ce DAC n'est pas fait pour vous.
Si par contre vous aimez écouter la musique comme au concert, avec la sensation d'être proche des musiciens , alors ce DAC devrait vous combler !

Pour comparer avec le Chord Qutest que je possède également, le Chord amène un peu plus de naturel et de musicalité à l'écoute , l'Audio GD semble plus précis et plus analytique. Difficile de les départager réellement, pour le prix l'Audio GD frappe fort.

Je précise enfin que j'utilise un câblage en full OCC cryo , qui permet d'obtenir un son organique , libéré de toute froideur digitale …

Merci Audiophonics pour le service au TOP !
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This review has been posted for AUDIO-GD NFB-11.38 DAC ES9038PRO / Pre / Headphone amplifier DSD 32bit / 384kHz Femto
 
AUDIO-GD NFB-11.38 DAC ES9038PRO / Pre / Headphone amplifier DSD 32bit / 384kHz Femto
The Audio-GD NFB returns with several notable evolutions. Its digital / analog conversion stage works now thanks to a ES9038Pro chip, which is...

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