睿志音响

	心睿 · 志远

NFB-20.32
全分立件遥控DAC / 前级 / 耳机放大器 All In One

32bit / 384K 异步传输 USB-32 芯片
两片Hi-end级WM8741芯片

售价：RMB9550 （含国内与香港运费）

概述

使用指引

规格

技术细节

定制选项

FT 与 OS 开关:

设置NFB-20.2的数字滤波器特性。

Frequency response diagram from RCA / XLR /ACSS output: ( Click to zoom)
Display OS=8, Filter = 1 :	Input sampling 44.1KHz,24Bit, -2.5DB at 20KHz	Input sampling 48KHz,24Bit, -0.2DB at 20KHz , -3DB at 23KHz
8X oversampling , Minimum phase apodising filter. Support up to 48KHz .

Display OS=8, Filter = 2 :	Input sampling 44.1KHz,24Bit, -0.2DB at 20KHz , -3DB at 25KHz	Input sampling 48KHz,24Bit, -0.2DB at 20KHz , -3DB at 25KHz
8X oversampling , Linear phase apodising filter. Support up to 48KHz .

Display OS=8, Filter = 3:	Input sampling 44.1KHz,24Bit, -2.5DB at 20KHz	Input sampling 48KHz,24Bit, -0.2DB at 20KHz , -3DB at 23KHz
8X oversampling , Linear phase half-band filter for backward compatibility. Support up to 48KHz .

Display OS=4, Filter = 1:	Input sampling 44.1KHz,24Bit, -3DB at 15KHz	Input sampling 48KHz,24Bit, -3DB at 17KHz	Input sampling 96KHz,24Bit, -0.2DB at 20KHz , -3DB at 31KHz
4X oversampling , Minimum phase 'soft-knee' filter. Support up to 96KHz .

Display OS=4, Filter = 2 :	Input sampling 44.1KHz,24Bit, -3DB at 15KHz	Input sampling 48KHz,24Bit, -3DB at 17KHz	Input sampling 96KHz,24Bit, -0.2DB at 20KHz , -3DB at 31KHz
4X oversampling , Linear phase 'soft-knee' filter. Support up to 96KHz .

Display OS=4, Filter = 3 :	Input sampling 44.1KHz,24Bit, -2.8DB at 20KHz	Input sampling 48KHz,24Bit, -0.3DB at 20KHz , -3DB at 24KHz	Input sampling 96KHz,24Bit, -1DB at 20KHz , -3DB at 42KHz
4X oversampling , Linear phase 'brickwall' filter. Support up to 96KHz .

Display OS=2, Filter = 1:	Input sampling 44.1KHz,24Bit, -3.2DB at 20KHz	Input sampling 48KHz,24Bit, -2.5DB at 20KHz , -3DB at 22KHz	Input sampling 96KHz,24Bit, -0.5DB at 20KHz , -3DB at 25KHz
2X oversampling , Minimum phase 'soft-knee' filter. Support up to 192KHz .

Display OS=2, Filter = 2:2 :	Input sampling 44.1KHz,24Bit, -3.5DB at 20KHz	Input sampling 48KHz,24Bit, -2.7DB at 20KHz	Input sampling 96KHz,24Bit, -0.8DB at 20KHz , -3DB at 25KHz
2X oversampling , Linear phase 'soft-knee' filter. Support up to 192KHz .

Display OS=2, Filter = 3 :	Input sampling 44.1KHz,24Bit, -2.5DB at 20KHz , -3DB at 22KHz	Input sampling 48KHz,24Bit, -2DB at 20KHz , -3DB at 23KHz	Input sampling 96KHz,24Bit, -0.2DB at 20KHz , , -3DB at 40KHz
2X oversampling , Linear phase 'brickwall' filter. Support up to 192KHz .

如何设置控制功能 :
       NFB-20允许用户选择 70 steps （线性特性）与 99 steps （指数特性）音量控制, 及控制功能是否具有记忆功能。
1. 选择 70 steps 与 99 steps 音量控制:
Step A: 按出机后的Debug开关。
Step B: 显示屏会显示如下图片样式。
Step C: 按动音量按钮令显示屏右侧显示 “70” 或“99”
Step D: 按回 Debug 开关。
           70 step 音量控制                99 step 音量控制

2. 选择记忆功能:
Step A: 按出机后的Debug开关。
Step B: 按动输入选择按钮，令显示屏会显示如下图片样式。
Step C: 按动音量按钮令显示屏左侧显示 "ON" or "OF" 。
Step D: 按回 Debug 开关。
音量记忆功能启用音量记忆功能停止

无论音量记忆功能是否启用，输入通道依然具有记忆功能。