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XSP-1
4. Direct Button
Press this button to bypass the high-frequency and low-frequency trim circuitry; the status
will be indicated in the VFD. Unlike old-style tone controls or digital processing, the HF
and LF Trim adjustments on the XSP-1 are implemented by discrete analog components,
and switched by analog switches under digital control. This yields precise control, perfect
repeatability, and the assurance that the trim circuitry is totally out-of-circuit when it is
bypassed, while keeping the audio signal entirely in the analog domain.
Note: If the Processor Loop is On, and the Direct button is pressed, the VFD will
momentarily display the Trim status and then return to displaying the Processor
Loop status.
5. VFD (vacuum fluorescent display)
The VFD displays all status on the XSP-1, including level, Trim status, and the input that is
selected. The VFD brightness can be adjusted in ten levels (using the Dim Button).
6. Volume Knob
Rotate the Volume knob clockwise to turn the Volume up; counter-clockwise to turn the
Volume down. When there are no headphones plugged in, the Volume knob controls
the main output level; when headphones are plugged in, the Volume knob controls the
headphone volume; the XSP-1 remembers both separately. When you put the XSP-1 in
Standby mode or turn it Off, it will return to the previous Volume setting the next time it is
turned On. Level control is via a digitally controlled analog resistor ladder network, which
offers true analog sound and near perfect channel matching and repeatability.
Note: The Volume knob on the XSP-1 is a digital encoder which instructs the
processor to increase or decrease the actual setting of the level control. The VFD
indicates the precise setting at any moment, the position of the knob itself does not.
7, 9. HF and LF Trim Controls
Note: The Trim feature and the Trim controls only operate when enabled using the
Direct function (Direct Off). Both the mode (On or Off), and the settings themselves,
are retained when the XSP-1 is put into Standby or powered down.
To operate the Trim Controls, press HF or LF to view the current setting; the display will
return to normal after a few seconds. While the setting is visible on the display, use the
Boost and Cut buttons to raise or lower the level. High-frequencies and low-frequencies can
each be individually boost or cut by up to +/- 3 dB (in 1 dB increments).
8. Phones Jack
A high-quality headphone amplifier which will provide excellent sound with both high and
low impedance headphones.
