Fully discrete analog stages without any OPA and couple caps in the signal channels.

Non- feedback ACSS analog output stage.Class A power supplies , Total have 7 groups PSUs and 3,0000 UF Audio caps for power supplies.

5 channels digital input : RCA coaxial / Optical / USB
DAC output : RCA / ACSS
USB Audio Class 2 High-speed Input from PC/MAC (NFB-3.2)
Supports full speed Asynchronous Transfer Mode (NFB-3.2)
Resolutions support 16 / 24-Bit with sampling rate support 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz (NFB-3.2 USB model)
Supports up to 24Bit/192KHz (Coaxial)
Supports 2X , 4X and 8X oversampling customers setting
Memorizes all settings and it could resume the last settings when power on.

Features

The main differences are as follow:
1, The NFB-3.2 applies 2 groups of class A parallel connection PSU supplied for analog output stage, (the analog output stage power supply is very important, so we keep the 2 groups of class A parallel connection PSU here). Another 5 groups of linear PSU's supplied for other parts.
The NFB-2.2 applies 6 groups class A parallel connection PSU for the whole gear, and 1 linear PSU for the control parts.
2, The NFB-3.2 applies a toroidal transformer, the NFB-2.2 applies an R-core transformer.
3, The NFB-3.2 applies mostly 1% SMD resistors and caps, the NFB-2.2 applies mostly DALE resistors and WIMA caps.
4, The NFB-2.2 sound better than the NFB-3.2 on detail , high / low extend but the different not as the price different.

Technical Specifications

• S/N Ratio 116DB
• Output impedance 10 ohm 
• Output Level 2.5V (RCA) 2MA (ACSS)
• Input Sensitivity 0.5 Vp-p(75 Ohms, Coaxial) 19 dBm (Optical)
• USB1.1 ,USB2.0 (Full Speed, High Speed, Class2)
• Frequency Response 20Hz - 20KHz （-0.2DB）
• Support Sampling USB model : 44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
• Coaxial model: 44.1kHz, 48kHz, 88.2kHz, 96kHz, 192kHz
• Optical model: 44.1kHz, 48kHz, 88.2kHz, 96kHz
• Power Requirement  Version 1: 100-120V  AC 50/60 Hz Version 2:  220-240V  AC 50/60 Hz
• Power Consumption 15W
• Package Weight Approximately 5KG
• Dimensions W240 X L320 X H80 (MM, Fully aluminium )  

*1 year warranty