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Easy to use controls and easy to return to settings.    Controls all operate very smoothly.   Will provide full bypass function when unit is switched off.
   Plugs into any speaker/headphone jack. You may need an adapter plug/jack to fit yours.  Any Speaker or head phone can then plug directly into QF-1A.  Again, an adapter plug may be needed.  The QF-1A uses a 1/4" phone plug and jack for In and Out respectively.  Has built-in speaker and headphone amplifier and will adapt accordingly to whatever you plug in.

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