Feedback : http://www.head-fi.org/t/603553/new-audio-gd-nfb-6-balanced-amplifier#post_8879659
Fully balanced design built by discrete analog stages without any OPA and couple caps in the signal channels.
Non- feedback ACSS analog output stage .
2 group class A dedicated PSUs are used to purify the power supply.
Four-channel digitally controlled relay-based volume control to avoid channel imbalance and improve sound quality. NFB-6 has 80 steps volume level control in both high gain mode and low gain mode. The total 160 step volume control ensures smooth control of the volume level.
5 Channel analog inputs: RCA X2, XLR X2, ACSS X1
Preamp output : XLR / RCA / ACSS
Headphone output : 4 pins XLR / 6.3MM SE (3000MW @ 100 ohm)
Memorizes all settings and it could resume the last settings when power on.
*The NFB-6 remote control common with other audio-gd DAC remote control, if customer already own the DAC (NFB-10SE, NFB-9 ) remote control and want the especial remote control for NFB-6, please inform us while place the order.
Low price but sound dead neutral, don't match with low grade source or listen low quality recorders . Single-ended connect headphone can't perform the best performance.
Modification guide on headphone jack for 4-pin balanced headphone output.
Click here to read: modification guide
Parts for the modification is USD30. (Includes one female 4-pin plug and one male 4-pin plug, some tapes and some WBT tin solder.)