GUSTARD H20 User Manual

Gustard

H20

Balanced Headphone Amplifier

User manual

- 1 -

Table of contents

Front Panel Introduction ···································2

Rear panel introduction·····································3

Balanced headphones Connection Guide·························4

Specification·············································5

Warranty················································6

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Front Panel

1. Power switch is a button switch. Press it to power it on. Press it again to turn it off.

2. The input channel is selected by the upper, middle, and lower third gear switches.
The top is the RCA input, and the middle and the bottom are each a group of XLR inputs.

3. The gain adjustment is the same as above, where the lower is the normal gain, the middle
is the middle gain, and the upper is the high gain.

4. Single-ended low-impedance headphones output is recommended for connecting single-ended
low-impedance headphones.

5. Single-ended high-impedance headphones output is recommended for connecting single-ended
high-impedance headphones. If you feel that a pair of low-impedance headphones is difficult
to drive, this headphones output provides maximum power.

6. Four-pin balanced headphones output is recommended for connecting to a four-pin
balanced headphones.

Pin 1=Left+ Pin 3=Right+
Pin 2=Left- Pin 4=Right-

7. The left and right dual three-pin balanced headphones output is recommended for connecting
a pair of three-pin balanced headphones. The dual three-pin balanced headphones output and
the four-pin balanced headphones output are internally connected in parallel.

Pin 1 Floating Pin 2 + pin 3 -

See page 4 for more details.

8. The volume knob can increase or decrease the output volume by rotating clockwise/
counterclockwise.