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Audio-GD - NFB 29.38 - Single Ended ES9038 PRO DAC / Pre / Headphone Amplifier (DSD, DxD, Amanero USB)

Audio-GD
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Audio-GD - NFB 29.38 (Single-ended Pre & Headphone Amp ES9038Pro  Amanero USB DAC) Single ended headphone & pre- amplifier with integrated digital analogue converter based on flaship from Sabre, the ES9038Pro. All parts and components are selected based on excellent sonic and meas ...Read more
Common price: € 1.089 Our price: € 939
€ 776 excl VAT


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Audio-GD - Remote Control (IR) Aluminium
Analogue Outputs
Headphone Outputs
Power cable (Default C13 EURO)
HDMI I2S Input (Replace RJ45)
Audio-GD - Digital SPDIF coax interlink RCA (1m)
Audio-GD - Digital SPDIF coax interlink BNC (1m)
Audio-GD - Analogue RCA interlink stereo pair (1m)


  • Description
  • Specifications

Audio-GD - NFB 29.38 (Single-ended Pre & Headphone Amp ES9038Pro  Amanero USB DAC)

Single ended headphone & pre- amplifier with integrated digital analogue converter based on flaship from Sabre, the ES9038Pro. All parts and components are selected based on excellent sonic and measurements performance. Components are e.g. from DALE resistors (USA), WIMA capacitors (Germany)  and NOVER parts (UK) . The used components but also the technical design (e.g. discrete analogue section) of this system were being selected after many years of experience and practices and are considered to perform and provide sublim sonic results. Supporting todays high resolutions and up to date interfaces like USB and I2S.

Latest update: Volume boards are equipped with Vishay KOA resistors (dual parallel)  to achieve very low tolerance  (0.05%)

This version includes the low jitter TCXO clocks option

es9038pro chip pic


audiogd koa volumeboards 001

Volume Boards are equipped with Vishay or KOA resistors, very low tolerance 0.05% .


SUMMARY
  • Discrete single ended DAC & headphone- &  preamplifier
  • DSD & DXD support from USB and I2S
  • Sabre ES9038Pro 32bit / 7684K
  • Asynchronous 32bit / 384K  transfer  USB-32 Chip
  • Shortest current driven signal path with discrete and DC coupled ACSS output stages
  • R-core transformer
  • DALE resistors (USA), WIMA caps (Germany)  and NOVER components (UK)
  • 6-group PSU's to purify the power supply
  • Four-channel digital controlled relay-based volume control to avoid channel imbalance and will improve sound quality
  • 80 steps volume control in both high gain mode and low gain mode. smooth volume level control
  • Static storage control software to avoid degrade sound quality, the MCU will be disabled when inactive 


DIGITAL INPUTS
  • 1. USB input. 
  • 2. I2S Asynch. input (RJ45)
  • 3. Toslink optical SPDIF
  • 4. BNC coaxial SPDIF
ANALOGUE INPUTS
  • 5. RCA
  • 6. RCA

OUTPUTS

Outputs can be set to variable or fixed

  • ACSS (single ended)
  • 2x RCA single ended
  • Headphone (4-pin) XLR balanced
  • Headphone 6,3mm jack single ended

HIGH PRECISION VOLUME CONTROL

Volume control consist of relay-controlled attenuators. Fully-independent, fully-balanced stereo volume controls. The volume controls feature consist of high-precision 0.05% tolerance film resistors and golden contact relays. Buffered inputs and outputs.There 4 channels volume boards are built in the unit to achieve ultimate balanced volume control. They are controlled by a digital signal controlling the high quality relays switching the precision resistors in analog area.

Audio-GD lineair volume characteristic Volume steps in comparison to standard volume control
volumecontrol1 volumecontrol2

Quality of volume control is very important in balanced applications . It have to effectuate the four channels to work as synchronous as possible to keep the balanced signal in perfect shape. In traditional volume controls the balanced output will introduce distortion which will negatively influence sound quality and performance and might even get worse than a single ended setup and waste the advantages of balanced designed solution.

USB SUPPORT

Download USB Amanero drivers for Windows 10
Download USB Amanero drivers for Windows 7 & 8

No drivers required for Linux and/or Mac OS
OSX 10.6+ and Linux with UAC2 compliant kernel
Microsoft Windows: KS/Wasapi/WDM/ASIO

DIGITAL CONFIGURATION GUIDE
IIR Filters (DSD only) IIR0 IIR  
47K ON ON
50K OFF OFF  Default
60K OFF ON
70K ON OFF
       
FIR Filters (PCM only) FIR 0 FIR 1 FIR 2
Fast roll-off,  Linear ON ON ON
Slow roll-off, Linear ON ON OFF  Recommended
Fast roll-off, Minimum ON OFF ON
Slow roll-off, Minimum ON OFF OFF
Fast roll-off, Apodizing OFF ON ON
Fast roll-off, Hybrid OFF OFF ON
Brickwall filter OFF OFF OFF  Default

The filter Settings are for personal preference. The default setting is typically the best for most listeners. Feel free to adjust it according to your preference after you are familiar with the sound. IIR stands for Infinite Impulse Response. These settings will likely not offer significant sonic difference.

Brand URL : http://audio-gd.com/Pro/Headphoneamp/NFB29.38/NFB29.38EN.htm

Specifications

>120
0.5 Vp-p
19 dBm
0.7V RMS to 5V RMS
USB: 44.1 - 384kHz | Coax: 44.1 - 192kHz | Optical: 44.1 - 96kHz
1.0, 1.1, 2.0 & 3.0
Windows, iOS, Linux
10V RMS
2mA
19V RMS
8000MW / 40 ohm 3500MW / 100 ohm 1200MW / 300 ohm 600MW / 600 ohm
5
31
W240 X L360 X H80 (Aluminium)
Remote Control
USB Cable
IEC Power Cord
Weight: 5 kg
Width: 240 mm
Length: 360 mm
Height: 80 mm
Brand: Audio-GDAudio-GD
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