Worldwide Agents: 1. We provide worldwide email technical enquiry and support - audio-gd@vip.163.com 2. Products purchased from our worldwide agents could obtain free local warranty service. For details, please visit the corresponding website below.
Netherlands http://www.magnahifi.com	France http://www.audiophonics.fr	Poland http://www.4HiFi.pl  http://www.interprojekt.pl
Russia http://www.hi-audio.ru	Russia http://www.audiogd.ru/	Russia http://patefon.ru/brands/audio-gd
Ukraine https://era-in-ear.com/shop/brand/Audio-gd	Malaysia https://shopee.com.my/starspicker	Italy http://www.spiritsoundstore.com
Link exchange (Non agent)	Vintage Audio World http://www.vintageaudioworld.com/products/

　

All DACs  process DSD natively. (= No PCM conversion to decode DSD)

All DACs built in latest firmware , without MCLK signal request.
　

Digital Interface

DI-20	DI-20HE

R-2R Resistor Ladders DAC/Headamp/Preamp all in one

R2R 11 Single Ended All In One	R-28 (Edition 2020) Balanced All In One	R-27 Balanced All In One

R-2R Resistor Ladders decent DACs

R2R 2 Single ended DAC	R-1 Balanced DAC	R-8 Balanced DAC
R-7 (2020 version) Balanced DAC	R-8HE Balanced DAC built in regenerative power supply	R-7HE (2020 version) Balanced DAC built in regenerative power supply

　

ES9028 & ES9038 DAC/headamp/Preamp All In One

NFB-11.28 Music Edition	NFB-11.28 Performance Edition	NFB-11.38 Performance Edition
D-28 Balanced	D-27 Balanced

ES9028 & ES9038 Decent Balanced DACs

D-77 Dual ES9038	NFB-7.77 Dual ES9038	AS-1 Ultra low distortion Dual ES9028

　

Headphone Amps and Preamp

NFB-1AMP Balance preamp / Headamp	Master 19 Balance preamp / Headamp	Master 9 Balance preamp / Headamp	HE-9 Headphone amp/ Preamp built in regenerative power supply

Decent Preamp

Master 1 Balance preamp	HE-1 Balance preamp built in regenerative power supply	Vacuum 1 Tube Preamp	Vacuum HE1 Tube Preamp built in regenerative power supply

　

Power amps

A1 Balance amp	Master-10 Balance integrated amp	Master-3 Balance amp	Master-2H Balance mono amp