TOPPING TP22A Desktop Amplifier User Manual

TOPPING TP22A Desktop Amplifier

INTRODUCTION

Thank you for purchasing desktop amplifier LA90 Discrete. We hope it could bring you more fun at enjoying music! Before making any connections or using this product, we recommend you read this manual first so that you can use all the features of LA90 Discrete correctly and get the most listening pleasure.

Contents list

• LA90 Discrete x1
• AC to DC power adapter x1
• AC cable x1
• Jumper cable x1
• User manual x1
• Warranty card x1
  Note: You can download the user manual on http://www.topping.audio/.

FRONT PANEL

• 1-1 Power & Input switch: Press to turn on or select other input, press and hold to turn off
• 1-2 Volume knob: Turn clockwise to turn up volume, turn counterclockwise to turn down volume
• 1-3 Input indicator

REAR PANEL

• 2-1 Stereo left channel balanced inputs/Mono balanced inputs (IN1-3) *

• 2-2 Stereo right channel balanced inputs (IN1-3) *

• 2-3 Stereo R+ speaker output/Mono negative speaker output

• 2-4 Stereo R- speaker output

• 2-5 Stereo L+ speaker output/Mono positive speaker output

• 2-6 Stereo L- speaker output

• 2-7 Power input (DC64V/3.75A)

• 2-8 12V Trigger In
  When a device with 12V Trigger out jack is connected, LA90 Discrete’s power on/standby can be controlled through this device

• 2-9 Firmware upgrade interface
  This interface is for firmware upgrade only

• 2-10 Volume setting

  • VOL: Enable volume control
  • BYPASS: Bypass the volume control

• 2-11 Amplifier mode

  • STEREO
  • MONO

• 2-12 Gain setting

  • LOW
  • HIGH
    *Note: Description of female XLR +6.35mm TRS combo connector pin definition

Connection

1. When LA90 Discrete is set to Stereo mode

2. When LA90 Discrete is set to MONO mode

Note:

1. Gray-out inputs&outputs do not work under MONO mode
2. Need to connect the gray speaker output terminals with jumper cable

Product specifications

Note: The above data is the result of the test in TOPPING laboratory under AC220V 50Hz condition

Trouble shooting

Precautions for daily use

1. Any connections must refer to this user manual.
2. Ensure the output jack, including speaker L+, L-, R+ , R- do not short circuit or connect to ground.
3. Whether you need to connect or disconnect a cable, please turn off LA90 Discrete first.
4. To cut the power of AC adapter, please turn off LA90 Discrete first, then pull out the power cable or cut the power of adapter.
5. Opening the case instantly voids the warranty!
6. Use TOPPING AC adapter only
7. Indoor use only.
8. Topping accepts no liability for any loss or damage arising directly or indirectly from the failure of LA90 Discrete.
9. For improvement purpose, specifications subject to changes without prior notice.

GRAPHICAL REPRESENTATION

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