TOPPING TP21B Compact Hi-Fi Digital Amplifier User Manual

June 16, 2024
TOPPING

TP21B
User Manual

Contents list

TP21B x1
Remote control x 1
USB cable x1
AC cable x 1
Bluetooth antenna x 1
Product Information Card x 1
Note: You can download the driver on https://www.toppingaudio.com/downloads.

Attribute

Measured 22.2cm x 16.0cm x 4.5cm
Weight 1.17Kg
Power input 100-240VAC 50Hz/60Hz
Signal input USB/BT/OPT/COAX/AES/IIS
Line Out output XLR/RCA
Other connectors 12V Trigger In (3.5mm jack) 12V Trigger Out (3.5mm jack)
Bluetooth receiving distance >10 M
Display White OLED
Standby power consumption <1W
Power consumption <9.5W

Input range

USB IN| PCM 44.1 kHz-768kHz/16bit-32bit
DSD DSD64-DSD512 (Native), DSD64-DSD256 (DoP)
MQA 44.1 kHz-384kHz/16bit-24bit
---|---
IIS IN| PCM 44.1 kHz-768kHz/16bit-32bit
DSD DSD64-DSD512 (Native), DSD64-DSD256 (DoP)
COAX/OPT/AES IN| PCM 44.1 kHz-192kHz/16bit-24bit
DSD DSD64 (DoP)
MQA 44.1 kHz-384kHz/16bit-24bit
BT IN| AAC/S BC/APTX/APTX H D/APTX-Adaptive/LDAC

  • TP21 B includes MQA technology, which enables you to playback MQA audio files and streams, delivering the sound of the original master recording.

Attribute

Front panel

TOPPING TP21B Compact Hi-Fi Digital Amplifier - Figure
1

Rear panel

TOPPING TP21B Compact Hi-Fi Digital Amplifier - Figure
2

  1. Multifunction button

  2. OLEO screen

  3. Remote control receiver

  4. Volume knob

  5. Right channel balanced XLR output

  6. Left channel balanced XLR output

  7. Left channel single-ended RCA output

  8. Right channel single-ended RCA output

  9. IIS input

  10. Coaxial SPDIF input

  11. Optical SPDIF input

  12. Bluetooth input

  13. USB input

  14. AES input

  15. 12VTriggerlN/OUT (3.5mmjack)
    The 12V Trigger IN/OUT allows the TP21 B to be activated by other devices or to activate other devices via a 3.5mm AUX cable. The upstream device connected to Trigger In can control the power on/standby of TP21 B, and the  downstream device connected to Trigger Out can be controlled by TP21 B.
    Before using the Trigger IN function, you need to press the  button on remote to set auto power on&standby mode to “ : TRG”.

  16. Power input (AC 100-240V 50Hz/60Hz)

  17. Power switch

Display

  1. Input
  2. Output
  3. Current sampling rate
  4. Volume
  5. PCM/DSD/MQA format indication*
    Note: There are three forms of MQA operation modes.
    ( 1) “MQA”: Indicates that the product is decoding and playing an MQA stream or file, and denotes provenance to ensure that the sound is identical to that of the source material.
    (2) “MQA.”: Indicates it is playing an MQAStudio file, which has either been approved in the studio by the artist/producer or has been verified by the copyright owner.
    (3) “OFS”: Confirms that the product is receiving an MQA stream or file.
    This delivers the final unfold of the MQA file and displays the original sample rate.

Remote control

TOPPING TP21B Compact Hi-Fi Digital Amplifier - Figure
4

See “1. Auto power on & off setting” in the “Setup Menu”, below.
See “2. Screen brightness setting” in the “Setup Menu”, below.

Connection

Connect to the input source
Support IIS,USB, Coaxial, Optical, Bluetooth, AES input.TOPPING TP21B
Compact Hi-Fi Digital Amplifier - Figure 5

Connect to amplifier or active speakers
Use XLR or RCA cables to connect to amplifiers or active speakers. In order to avoid damage to your devices, please turn off the amplifier or active speakers before you connect them to TP21 B. TOPPING TP21B Compact Hi-Fi Digital
Amplifier - Figure 6

Operation

Power on & off/ standby operation

  1. Power on & off: Press the power switch on the rear panel to turn TP21 Bon or off.
  2. Standby setting:
    When it is working, press and hold the button on the front panel to enter standby state and press to exit standby state when it is standby. Or you can press the button on remote control to enter or exit standby state.

Volume setting

  1. Mute and unmute: Press the button on the remote control to mute TP21 B, press the mute button again or adjust the volume to exit mute state.
  2. Volume adjusting: You can turn the volume knob or press the or button on the remote control to adjust the volume. Note that long pressing the O and O buttons on the remote control will quickly change the volume, so please be  careful in order to protect your hearing.
    Note: Volume is fixed to 0dB in DAC mode and volume adjusting is invalid in this mode.

Input channel switching
Press knob on the front panel or press the O or O button on the remote control to switch the input circularly.
Output channel switching
Press the button on the remote control to switch the output in cycle: RCA/ XLR / RCA+XLR.

Setup Menu

Enter the setup menu
After switching the power switch to “POWER OFF , press and hold the front panel button while switching to “POWER ON to enter the TP21 B setup menu.

Change settings

  1. The knob on front panel:
    Rotate the knob: Choose setting item Press the knob: Change the setting/OK

  2. The remote control:
    TOPPING TP21B Compact Hi-Fi Digital Amplifier - Figure
7

Save Settings
Please choose the 17th option of “Save and exit”.

Auto power on & off setting the setup menu
Signal: Input signal will trigger the device to turn on, but if the current input is not connected or input signal is invalid in 1 minute, it will automatically enter the standby state. Once having detected valid signal, it will automatically return  to working state. (Default) TRG: 12V signal will trigger the device to turn on. When TP21 B’s Trigger In is connected to another device’s 12V Trigger Out, D90 111 SABRE’s on/standby state can be controlled through this device. The TP21  B will remain in standby state until Trigger In detects the signal change from 0V to 12V. When changing back to 0V, the D90 111 SABRE will return to standby state.
Off: Disabled this function.
Screen brightness setting
L: low brightness
M: Medium brightness (Default)
H: high brightness
A: Auto has the same brightness as Medium. The difference is that when there is no operation after 30 seconds under Auto mode, the screen will be automatically turned off and only display the current input. You can press any button to  light up the screen.
Line Out mode setting
PRE: Per-Amp mode, volume adjustable (Default)
DAC: Keep the maximum volume output and the volume is not adjustable.

Line Out output setting
RCA+XLR: RCA&XLR Output simultaneously (Default)
RCA: RCA Output only
XLR: XLR Output only
Bluetooth setting
ON: Bluetooth enabled (Default)
OFF: Bluetooth disabled
PCM filter setting
F-1: Minimum Phase
F-2: Linear PhaseApodizing
F-3: Linear Phase Fast Roll-off (Default)
F-4: Linear Phase Slow Roll-off
F-5: Minimum Phase Fast Roll-off
F-6: Minimum Phase Slow Roll-off
F-7: Minimum Phase Slow Roll-off Low Dispersion

IIS interface phase setting
STD: Standard phase (Default)
REV: Reverse phase

DSD channel setting for the 11S interface

TOPPING TP21B Compact Hi-Fi Digital Amplifier - Figure
9

LRCLK: DSDR using LRCLK (Default) DATA: DSDR using DATA

DSD flag bit setting for the IIS interface

Pin15: Set pin 15astheflag bit (Default)
Pin 14: Set pin 14 as the flag bit

Maximum output level at 0dBFS
4V (Default),5V
Sound mode setting
Sound Mode OFF (Default), Valve Sound, Transistor Sound

Trouble shooting

Phenomenon Cause Solution
No sound Wrong input was selected Select the correct input
Wrong output was selected Select the correct output
Incorrect cable connections Check and reconnect
Sound is muted Turn up the audio
Audio source no output Adjust or check it
USB did not recognize USB cable did not connect properly Check or change the

cable
PC’s USB port damaged| Change another port
The PC does not work| Check or try with another PC
The OTG function of the phone is not enabled| Enable OTG function
USB input, no sound| Too low volume on PC| Adjust volume
TP21B is not selected as the output device on the PC| Set the TP21B as the default output device
Cannot pair TP21B Bluetooth| Bluetooth is disabled on TP21B| Enable Bluetooth in the setup menu.
TP21 B is already connected to other Bluetooth device| Let TP21 B enter pairing mode first.
Weak signal due to long distance| Take the device closer to DX9 and connect again
Bluetooth input, no sound| Too low volume on phone| Adjust volume
DAC abnormal| DAC abnormal| Do not connect the TP21 B to any other devices,
unplug and re-plug the power cable and reboot the unit.
Protect| Abnormal input voltage| Check if the input voltage is 100-240VAC, try another power supply.
If you still have problems or questions, please contact us (service@tpdz.net)

Specifications

TP21B DAC parameters (LineOut/USB In@96kHz)|
---|---
| RCA| XLR
THD+N @ A-wt| <0.00006% @1kHz| <0.000045% @1kHz
THD @No-wt 90kBw| <0.0003% @20-20kHz| <0.0001% @20-20kHz
SNR @A-wt| 129dB @1kHz| 135dB @1kHz
Dynamic Range @A-wt| 129dB @1kHz| 135dB @1kHz
Frequency Response| 20Hz-20kHz (±0.1 dB)| 20Hz-20kHz (±0.1 dB)
20Hz-40kHz (±0.3dB)| 20Hz-40kHz (±0.3dB)
Output Level| 2.1Vrms @OdBFS (4V Mode)| 4.2Vrms @OdBFS (4V Mode)
2.6Vrms @OdBFS (5V Mode)| 5.2Vrms @OdBFS (5V Mode)
Noise @A-wt| <1.1uVrms| <1.1uVrms
Channel Crosstalk| -133dB @1kHz| -149dB @1kHz
Channel Balance| 0.3 dB| 0.3 dB
Output Impedance| 500| 1000

*Note: All the above parameters were tested in the 5V mode with output amplitude of 5V.

FCC WARNING
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference, and (2) this device must accept any interference received, including interference  that may cause undesired operation.
Any changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following  measures:

  • Reorient or relocate the receiving antenna.
  • Increase the separation between the equipment and receiver.
  • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
  • Consult the dealer or an experienced radio/TV technician for help.

To maintain compliance with FCC’s RF Exposure guidelines, This equipment should be installed and operated with minimum distance between 20cm the radiator your body: Use only the supplied antenna.

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