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Since too many orders worldwide before holiday QSA have reached the production limit, QSA has decided to suspend accepting new orders for a few days in order to process the previous orders. The qsa technology process is manual processing and production. The production process is complicated and the daily output is limited. The more serious it affects the delivery date, QSA team hereby announce , So the user can only wait patiently, please understand, at present QSA team can only try their best to complete the order before the holiday, and wish user all a happy New Year and Christmas.

Qsa horn sound fuse product (Dark green)
Imitate the sound style of a large horn system
,retains the benefits of horn sound ,the vocals are full of tone, eliminates the drawbacks of horn speakers for perfect reproduction.
Qsa號角聲音保險絲産品(墨綠色)
模仿大型號角系統的聲音特點
保留號角聲音的優點，人聲中氣十足,並且消除號角色音箱的缺點,做成完美重播境界。

silver fuse us5000 and socket  us2500/5000 dual gang,production lead time 3 to 10days

Qsa team research 22years to find the relation between science data and music.

qsa know science data and music relation during 22years R&D.比愛因斯坦mc2

方程式更加複雜。

連物理學公式都表達唔到。

QSA technologies

1 MAT

Metal molecular activation technology

is to increases the number of electron flows

per second of the conductor technology,much lower background noise.

2 MMMAT

Musical Metal molecule Alignment Technology

music playback in musical way.

music become so live, it’s so lively, and there is magic to listen to one song after another.

This kind of magic has never been seen before.

3 SDCT (used  in silver series)

Skin Deep Compensation Technology.

By compensation the effective depth of penetration of an electromagnetic wave  Any type of vaccum tube can apply 

from black to silver grade

QSA technology apply to tube and furutech sockets products

TO max the performance