Wisdom in mind,   enthusiasm at heart.

NFB-15(Version 2014 )(Since 20th May 2014)

Discrete  DAC+ Headphone amplifier / Preamplifier
32bit / 384K Asynchronous Transfer  USB-32 Chip
Built in 2 Pieces Hi-end grade WM8741 Chips

Custom order options:

1,  Replace the RCA coaxial by BNC socket:
     Cost is USD10/per  without shipping delay  .
       
2, Upgrade TCXO for Whole unit ( one TCXO only)
     There are one TCXO can for upgrade for both USB and SPDIF interface .
     Cost is USD20 / per without shipping delay . This upgrade only can slightly improve on the sound transparency .
3, Upgrade 35W transformer.
     Default built in 20W transformer, upgrade to 35W transformer cost is USD15 .   This upgrade just like  a same series cars , one had built in 2000CC engine another built in 3500CC engine, they had same top speed but the driver can experience the different power .