9
Operating your Zphono•USB
Front Panel Display and Controls
Power Button
Pressing the Power button turns on the Zphono•USB.
Pressing the Power button a second time turns off the Zphono•USB.
(
Headphone) Jack
The headphone jack offers an easy way to monitor your source while recording or simply to listen
privately. The headphone volume is fixed at a medium level.
Note:
The Line Out jacks are muted when a headphone plug is inserted into the headphone jack.
The USB output is not muted when a headphone plug is inserted into the headphone jack.
Input Indicator
The selected input illuminates green. Available inputs are Phono, Line 1 and Line 2.
Mono Button
Press the Mono button to select the mono mode. When mono is selected the Left and Right
channels are combined into a mono signal at both the USB and the Line Out L and R jacks. All
mono records and older stereo records with high levels of rumble will sound cleaner when you
select mono. The Mono button illuminates red when Mono is selected.
Press the Mono button a second time to return to the stereo mode.
Note:
The front panel Mono button affects both the Phono and Line inputs.
Rumble Filter Button
The rumble filter can help to reduce low frequency noise. Rumble is an objectionable low
frequency sound that usually causes excessive woofer cone movement which makes your
amplifier waste power amplifying this low frequency noise and adding distortion. The Rumble
Filter button illuminates green when the rumble filter is engaged.
Rumble is caused primarily by vibration of the turntable’s motor and imperfections in its main
bearing design and manufacture. Rumble can also be present in some LPs that were originally
mastered on a noisy cutting lathe.
Note: The rumble filter can also be useful to reduce the audibility of footsteps on a spongy floor
while playing a record.
