睿志音响

	Wisdom in mind, enthusiasm at heart.

NFB-3.33（USB applied USB-32）
Dedicated Discrete DAC

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

Price: (Exclude shipping cost)
NFB-3.33 : USD349 Promo

Summarize

Use Manual

Specs

Technology Detail

Custom Option

Shipping Cost

The rule of the power ON / OFF:
Power On :
Source power ON ----> NFB-3 power ON ----> Amp power ON ( preamp , headphone amp and integrated amp )
Power Off:
Amp power OFF ( preamp , headphone amp and integrated amp ) ---> NFB-3 power OFF ---> Source power OFF .

Flavor button:
Select the oversampling and digital filter response of the NFB-3.33.
　

ACSS/RCA button:
Choose between RCA and ACSS signal output configure, display 1 is the signal configure for ACSS output, display 2 is the signal configure for RCA output.
No matter what mode is selected , the NFB-3.33 still output from ACSS and RCA sockets and the signal only working with ACSS technology for the most neutral sound , unless the ACSS sockets connect to an active ACSS amp, then the RCA signal will mute automatic .
　

Selector button:
Select the input modes of the NFB-3.33 . Display U : USB input. Display C : Coaxial input. Display O : Optical input.
　

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 .