1. Introduction
The Juson Audio JTA100-N is an upgraded integrated hybrid tube amplifier designed to deliver a vibrant and captivating auditory experience. It combines the rich warmth of vacuum tube pre-amplification with the robust power of transistor amplification, providing a balanced and clear sound reproduction.
With an impressive 200 Watts RMS output, this HiFi amplifier is suitable for various home audio setups. It features versatile input options including AUX, Coaxial, Phono, Optical, and Bluetooth 5.0, along with dedicated headphone and subwoofer outputs. Independent treble and bass controls allow for fine-tuning your audio, while the stylish LED display and VU meters offer real-time audio level data and enhance the unit's modern aesthetic.
Product showcase video of the Juson Audio JTA100-N amplifier.
Detailed product features and design overview.
2. Package Contents
Please check the box for the following items:
- 1 x Juson Audio JTA100-N Hybrid Tube Amplifier
- 1 x Remote Control
- 1 x AC Power Cord
- 1 x User Manual
- 1 x Bluetooth Antenna
Contents of the Juson Audio JTA100-N product package.
Robust packaging process for the amplifier.
3. Product Overview
3.1 Front Panel
Front panel controls and indicators.
- Bass Control
- Source Input Selector
- Power Switch
- VU Meter
- LED Display & IR Receiver
- VU Meter
- Headphone Output (1/4" TRS)
- Volume Control
- Treble Control
3.2 Back Panel
Back panel input and output ports.
- Bluetooth Antenna
- SW. Output (Subwoofer Output)
- OPT Input (Optical Input)
- PC-USB Input
- Coax Input (Coaxial Input)
- AUX Input (Stereo RCA)
- Phono Input + GND (Stereo RCA with Ground Terminal)
- Passive Speakers Output
- High-low Headphone Output Switch
- Cooling Fan
- Power Input (IEC Connection)
- Voltage Selector (AC 115V/230V)
4. Setup Instructions
4.1 Power Connection
- Ensure the amplifier's power switch is in the OFF position.
- Verify the Voltage Selector on the back panel matches your local power supply (115V or 230V). Adjust if necessary.
- Connect the provided AC power cord to the amplifier's Power Input and then to a suitable wall outlet.
4.2 Speaker Connection
- Connect your passive speakers to the 'Passive Speakers Output' terminals on the rear panel. Ensure correct polarity (+ to + and - to -). The amplifier supports speakers with a minimum impedance of 4 Ohms.
4.3 Subwoofer Connection
- If using an active subwoofer, connect it to the 'SW. Output' on the rear panel.
4.4 Headphone Connection
- Plug your headphones into the 1/4" TRS Headphone Output on the front panel.
- Use the 'High-low Headphone Output Switch' on the rear panel to match the impedance of your headphones (16-600 ohms).
4.5 Input Connections
- Bluetooth: Screw the Bluetooth antenna onto the 'Bluetooth Antenna' connector on the rear panel.
- Optical/Coaxial: Connect digital audio sources (e.g., CD player, TV) to the 'OPT Input' or 'Coax Input' using appropriate cables.
- AUX RCA: Connect analog audio sources (e.g., CD player, streamer) to the 'AUX Input' using RCA cables.
- Phono RCA (Turntable):
- Ensure your turntable is set to phono output signal. Many modern turntables have the ability to output either a line-level signal or a phono signal. If your turntable is set to output a line-level signal, please connect it to the AUX input instead.
- Connect the turntable's RCA cables to the 'Phono Input' on the rear panel.
- Connect the ground wire from your turntable to the 'GND' terminal on the rear of the amplifier.
- PC-USB: Connect your computer to the 'PC-USB Input' using a USB cable.
Connecting the amplifier to a turntable.
Enjoying private listening through headphones.
5. Operating Instructions
- Power On: Press the Power Switch on the front panel to turn on the amplifier. The vacuum tubes will glow, and the LED display will illuminate.
- Select Input: Rotate the 'Source Input Selector' knob on the front panel to choose your desired audio source (e.g., AUX, OPT, COAX, PHONO, BT, PC-USB). The selected input will be shown on the LED display.
- Adjust Volume: Use the 'Volume Control' knob on the front panel or the remote control to adjust the output volume. Start with a low volume and gradually increase it to a comfortable listening level.
- Tone Control: Use the 'Bass Control' and 'Treble Control' knobs on the front panel to adjust the low and high frequencies according to your preference.
- Bluetooth Pairing: When 'BT' input is selected, the amplifier will enter pairing mode. Search for 'Juson Audio JTA100-N' on your Bluetooth device and connect.
- Headphone Listening: When headphones are plugged in, the speaker output will automatically mute. Adjust the volume and headphone gain switch as needed.
Juson Audio JTA100-N amplifier in a home audio system.
Illuminated vacuum tubes and VU meters.
6. User Tips
- The amplifier provides 200 Watts RMS output, which is a continuous power rating, ensuring robust sound performance.
- For optimal sound quality when connecting a turntable, ensure your turntable's output is set to PHONO level, not line level.
- Experiment with the Bass and Treble controls to tailor the sound to your personal preference and room acoustics.
- If using high-impedance headphones (e.g., 300 ohms or more), utilize the High-low Headphone Output Switch on the rear panel for improved volume and clarity.
- Allow the vacuum tubes a few minutes to warm up after powering on for the best audio performance.
7. Maintenance
7.1 Cleaning
- Always disconnect the power cord before cleaning.
- Use a soft, dry cloth to clean the exterior of the amplifier.
- Do not use liquid cleaners, aerosols, or solvents as they may damage the finish or internal components.
7.2 Ventilation
- Ensure adequate airflow around the amplifier. Do not block the cooling fan or ventilation openings.
- Avoid placing the unit in enclosed spaces or on soft surfaces that may impede airflow.
7.3 Tube Care
- Vacuum tubes can become hot during operation. Allow them to cool down before handling.
- If replacing tubes, ensure the amplifier is powered off and unplugged. Handle new tubes carefully by their base to avoid damaging the glass.
8. Troubleshooting
8.1 No Power
- Check if the power cord is securely connected to both the amplifier and the wall outlet.
- Ensure the power switch on the front panel is in the ON position.
- Verify the Voltage Selector on the rear panel is set correctly for your region.
8.2 No Sound Output
- Confirm the correct input source is selected using the 'Source Input Selector' knob.
- Check that the volume is turned up on both the amplifier and your source device.
- Ensure speakers or headphones are properly connected. If using headphones, speaker output is automatically muted.
- Verify that the audio source device is playing and functioning correctly.
8.3 Distorted Sound
- Reduce the volume level on both the amplifier and the source device to see if distortion decreases.
- Check all audio cables for secure connections and damage.
- Ensure your speakers meet the minimum impedance requirements (4 Ohms).
- Test with a different audio source to rule out issues with the original source.
- Adjust Bass and Treble controls to neutral positions to see if they are causing distortion.
8.4 Bluetooth Connection Issues
- Ensure the Bluetooth antenna is securely attached to the rear panel.
- Make sure the amplifier's input is set to 'BT'.
- Place your Bluetooth device in pairing mode and ensure it is within range of the amplifier.
- Try unpairing and re-pairing the device.
- Check for any potential interference from other wireless devices.
9. Specifications
| Feature | Detail |
|---|---|
| Model Number | JTA100-N |
| Channels | 3 (2.1) |
| Amplication Class | Class A/B |
| Maximum Power Per Channel | 100 W |
| Maximum Power Output (Peak) | 260W x 2 @ 4 Ohm, 130W x 2 @ 8 Ohm |
| RMS Power Output | 100W x 2 @ 4 Ohm, 80W x 2 @ 8 Ohm |
| Total Gain | 29dB |
| THD+N | <1.5% @ Maximum Rated Output |
| Frequency Response | 15-20,000Hz (1dB) |
| Input Sensitivity | 630mV |
| Bluetooth Version | 5.0 (supports SBC and AAC codecs) |
| Signal to Noise Ratio | 80dB |
| Headphone Output | 130mV x 2 @ 32ohms; 180mV x 2 @ 300ohms |
| Preamplifier Tubes | 2*6J9 + 2*5726 + 2*6N7P |
| Transistors | Toshiba A1943 x 4, Toshiba C5200 x 4 |
| Stabilivolt Tube | WY-3P |
| Channel Separation | 53dB |
| Power Supply | 115/230 VAC, 50/60 Hz Standard IEC Connection |
| Dimensions (L*W*H) | 330*316*169mm (12.99*12.44*6.65 inches) |
| Tone Controls (Bass/Treble) | 6dB/oct @ 200Hz and 4,000Hz |
| Minimum Speaker Impedance | 4 Ohm |
| Digital Inputs | SPDIF LPCM (up to 48kHz 16Bit) |
| PC-USB Sample Rate | Up to 48 kHz 16Bit |
| Inputs | Optical, Coaxial, Bluetooth 5.0, 2x Stereo RCA (AUX), USB, Phono |
| Outputs | Speaker, Subwoofer, Headphone |
| Idle Power Consumption | 45W |
Product dimensions.
Available power plug options.
10. Warranty and Support
Juson Audio ensures that product functionalities are 100% inspected before shipping. We offer the following warranty policies:
10.1 Warranty Period
- Amplifier Unit: Free repairing service for 12 months from the date of receipt (excluding man-made damage and/or misuse).
- Tubes Parts: 3 months warranty.
10.2 Reporting Defects
- Defective units MUST BE reported with supporting evidence such as photos, videos, or other documentation that clearly demonstrates the problem.
- Returns must be arranged within the warranty period with original packaging. You will need to submit a tracking number and the Purchase Order (PO) number.
10.3 Post-Warranty Support
- Even after the warranty expires, the Juson Audio team is available to offer technical support online to assist you with product repairs.
10.4 Contact and Service
Juson Audio aims to provide the best possible after-sales service. Please feel free to contact us for any technical support or inquiries. Make a deal, enjoy lifetime services!
Official authorization letter for Juson Audio products.
11. Frequently Asked Questions (FAQ)
Q: Is the amplifier truly 200W?
A: Yes, the Juson Audio JTA100-N provides an impressive 200 Watts RMS output. RMS (Root Mean Square) refers to the continuous power handling capability of the amplifier, ensuring robust and consistent sound performance.
