睿志音响

	Wisdom in mind, enthusiasm at heart.

NFB-5.32（USB applied USB-32）
Discrete DAC+ Headphone amplifier / Preamplifier

32bit / 384K Asynchronous Transfer USB-32 Chip
Built in 2 Pieces Hi-end grade WM8741 Chips

NFB-5.32 Price :USD378

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Frequency response diagram RCA / ACSS output : ( Click to zoom)
Display 7 ( 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 8 ( 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 9 ( 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 4 (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 5 ( 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 6 (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 1 (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 2 ( OS=2, Filter = 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 3 (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 .

Improvement may result in changes in specifications and design without notice.
S/N Ratio	119db
Output Level	Headphone output : 10V RMS Variable output : 5V RMS Fixed output: 2.5V RMS
Output power Only for headphone.	3500mW/25 ohm 1800mW/50 ohm 900mW/100 ohm 300mW/300 ohm 150mW/600 ohm
Output impedance	2 ohm / Headphone output 4R7 ohm / DAC output
Input Sensitivity	0.5 Vp-p(75 Ohms, Coaxial) 19 dBm (Optical) USB1.1 / 2.0 (Full Speed)
Support Operate Systems (USB)	Windows : 44.1kHz to 192kHz music files OSX : 44.1kHz to 384KHz music files Linux : 44.1kHz to 192kHz music files ( We can not guarantee it can working with every Linux device )
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
Frequency Breadth	20Hz - 20KHz （-0.2DB）
Power Requirement	1 Version 100-120V AC 50/60 Hz 2 Version 220-240V AC 50/60 Hz
Power Consumption	20W
Package Weight	5KG
Accessories	AC power cord X1 USB cable X1
Dimensions	W240 X L320 X H80 (MM, Fully aluminium )
Operating Temperatures	+5 °C to +40 °C
Operating Humidity	5 % to 90 % (without dew)