USB-32 Introduce and drivers
Differences with the NFB-10ES2:
1, The NFB-28 has analog XLR and RCA inputs, and can used as a dedicated
headphone amp or preamp.
2, The NFB-28 has 4 digital inputs (Including BNC)
3, The NFB-28 has a larger R core power transformer.
4, The chassis is upgraded with all aluminum construction and a user friendly, rotary volume control.
Fully balanced design built by discrete analog stages without any
OPA and coupling caps in the signal channels, built in real balanced
DAC, output for headphone (4-pin XLR or 1/4") and line level DAC (fixed output) with preamp
Non- feedback ACSS analog output stage .
LED display avoids RF disturbance for better
R-core transformers and Hi-fi grade parts like DALE resistors, WIMA
Total of 6-group PSUs are used to purify the power supply , the
analog amp has discrete PSU power supply
Four-channel digitally controlled relay-based volume control to
avoid channel imbalance and improve sound quality.
steps volume level control in both high gain mode and low gain mode.
160-step volume control ensures smooth control of the
4 digital inputs:
Coaxial RCA / Coaxial BNC / Optical / USB
2 analog inputs:
XLR / RCA
XLR / RCA / ACSS (User can set either variable
output level as preamp or
fixed output level as dedicated DAC )
Headphone output :
4 pin XLR / 1/4" (6.3MM) SE
USB Audio Class 2 High-speed Input from Windows / MAC / Linux
Supports High / full speed Asynchronous Transfer Mode up to 384K / 32Bit
ability ( USB interface ) .
Supports Resolutions of 16 / 24 / 32 Bit with sampling rates of
44.1kHz, 48kHz, 88.2kHz, 96kHz, 176.4kHz, 192kHz
Used single ended (1/4" headphone jack or RCA output), is the NFB-28
a real balanced DAC. It has balanced outputs
(ACSS, XLR and balanced headphone output) and single-ended output
.There are 4 ACSS amplifiers in the NFB-28 for balanced outputs and balanced inputs. Even when a
single-ended output is used, the ES9018 DA chips will perform
fully thanks to the fully balanced design.
Modification guide on
headphone jack for 4-pin balanced headphone output.
Click here to read:
Parts for the modification is USD30. (Includes one female 4-pin plug
and one male 4-pin plug, some tape and tin solder.)