Singxer SA-1 Headphone AMP User Handbook
1. Thank you for choosing Singxer product. Please check the appearance and all its
accessories carefully once you have Singxer SA-1 in hand.
2. SA-1 supports a global power supply voltage of 100V-240VAC; before turning on, it is
recommended not to plug in headphones.plug in the power cord, turn on the power switch,
and the light of the power socket will light up.
3. There are three toggle switches on the front panel, the leftmost switch is the mode
selection switch. In OFF mode (standby mode), the main power supply of the internal
amplifier circuit is turned off and the output is turned off. HPA (headphone amplifier)
mode, the main power supply of the internal amplifier circuit works, the front 3
headphone output ports are turned on, and the PRE output is turned off. In PRE mode, the
headphone output port is closed, and the 2 preamp outputs on the rear panel are turned
on. SA-1 does not support HPA output and PRE out at the same time. Note: do not dial the
mode selection switch quickly.
4. Next to the switch is a status indicator, which goes out in OFF mode. In HPA and PRE mode,
the indicator lights up blue. When the indicator light is red, it is in the protection state and
the output is turned off. In HPA and PRE mode, first turn on the power switch at the back,
the indicator light will light up red for 3 seconds, then turn blue. If there is a constant red
light, or red and blue flashing alternately, it means that the machine has protection or
circuit failure. Please do not connect to the load at this time.
5. The switch in the middle is a 2-way input selection switch to select RCA single-ended input
or XLR balanced input. The 2 inputs are independent and do not affect each other.
6. The switch on the right is to select the impedance of the headphone output, LOW-Z is low
impedance mode, and HI-Z is high impedance mode. The low-impedance output
impedance is 1.4 ohms (balanced) and 0.7 ohms (single-ended); the high-impedance
output impedance is 11.4 ohms (balanced) and 10.7 ohms (single-ended). This mode is
only valid in the headamp mode. In the PRE output, the single-ended impedance is 22.5
ohms, and the balanced impedance is 45 ohms.
7. Three headphone output ports on the front panel, 4.4 balanced output, 6.35 single-ended
output, XLR four-core balanced output. The output port adopts the line sequence
commonly used in the industry. Note that the 6.35 socket cannot be connected to mono
equipment; the negative pole of the balanced output cannot be grounded.
8. High and low gain switches, at the bottom of the chassis, there are a total of 4 toggle
switches; when used, they need to be turned to one side together; near the outside of the
chassis is low gain, and the inside is high gain. The low gain is 0db, that is, the
magnification is 1 times; when the high gain is 11db, that is about 3.8 times. It is
recommended to dial the gain switch when shutting down; when turning, you need to fully
dial to the side, not the middle position .
9. The rear panel is an input and output socket, which supports single-ended RCA and XLR
balanced inputs, and the output is single-ended RCA and XLR balanced. The standards
adopted by the XLR socket are: 1 GND, 2 positive, and 3 negative. Note:the XLR output
does not support negative grounding.
Содержание SA-1
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