User Guide

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with an RCA-to-mini-phone jack (3.5mm) and serve as source. Please refer to the tube manual
page 21.
Headphone selection
You can use two kinds of headphones
! 6.3mm headphone
! 3.5mm headphone - via a converter to a 3.5mm plug for the lighter and smaller
headphone that can be found in many today’s gear such as MP3 player and portable
CD player to listen the audio through the AX4B-533 Tube connector via the supplied
bracket.
We recommend you acquire a pair of good quality headphone with 6.3mm plug.
Music CD selection
Make sure you have good recording music CDs when testing AX4B-533 Tube. Good
recording music CD will give more realistic sound stage, proper imagine, layers of resolution
and overall presentation. This music CD will then serve as a reference basis when comparing
the sonic performance.