1. Introduction
The AIYIMA A08 Pro is a high-performance stereo audio amplifier designed to deliver exceptional sound quality for your home audio system. It integrates a powerful TPA3255 amplifier chip, advanced Bluetooth 5.0 connectivity with support for high-definition audio codecs like aptX HD and LDAC, and a classic VU meter for a visually engaging experience. With 300W per channel output, tone control, and versatile input/output options, the A08 Pro is perfect for driving passive speakers and building a 2.1 channel system with an active subwoofer.
2. Key Features
- Unique Design: Integrated VU meter with warm backlighting provides a vintage aesthetic and dynamic visual feedback.
- High-Fidelity Sound: Delivers clear, warm, and sweet sound with minimal noise.
- Tone Control: Adjustable treble and bass knobs allow for personalized sound profiles.
- Powerful Output: TPA3255 chip provides 300W x 2 (4Ω) output power, suitable for 3-8Ω passive speakers.
- Low Frequency Output: Dedicated AUX output for connecting active subwoofers or active speakers to create a 2.1 channel system.
- Advanced Bluetooth Connectivity: Qualcomm QCC5125 chip with Bluetooth 5.0 for wireless HD audio transmission (SBC, AAC, APTX, APTX-LL, APTX-HD, LDAC codecs supported).
- Versatile Inputs: Supports RCA and Bluetooth audio input from various devices (mobile phone, tablet, computer, MP3, TV).
- Durable Construction: Aluminum alloy case ensures durability and a sleek appearance.
3. Setup Guide
3.1 Package Contents
- 1x AIYIMA A08 Pro Amplifier
- 1x Power Adapter (Optional, depending on purchase)
3.2 Connecting Your Amplifier
Before connecting, ensure the amplifier is powered off and unplugged from the mains.
- Power Supply Connection: Connect the DC 24-48V power adapter to the "DC 24-48V" input port on the rear panel. The interface size is 5.5x2.5mm.
- Speaker Connection:
- Passive Speakers: Connect your passive speakers to the "SPEAKER OUTPUT" terminals on the rear panel. Ensure correct polarity (red to red, black to black).
- Active Subwoofer/Active Speakers: For a 2.1 channel setup, connect an active subwoofer or active speakers to the "AUX OUT" (3.5mm) port on the rear panel.
- Audio Input Connection:
- RCA Input: Connect your audio source (e.g., CD player, DVD, TV, PC) to the "AUDIO INPUT" (RCA L/R) ports on the rear panel using RCA cables.
- Bluetooth Input: For wireless audio, ensure the Bluetooth antenna is securely attached to the "RF" port on the rear panel.
3.3 Wiring Diagrams
- Configuration 1 (Top): A08 Pro connected directly to passive speakers.
- Configuration 2 (Middle): A08 Pro connected to an external amplifier, which then connects to passive speakers. This diagram also shows a laptop connected to a T8 preamp, which then connects to the A08 Pro.
- Configuration 3 (Bottom): A08 Pro connected to an active subwoofer via the AUX OUT, and also to passive speakers.
Note: When Bluetooth is turned on and connected, it automatically switches to the Bluetooth channel. When Bluetooth is disconnected, it automatically switches to the RCA channel.
4. Operating Instructions
4.1 Front Panel Controls
- VU Level Meter: Displays the audio signal level, adding a visual element to your listening experience.
- Bass Control: Adjusts the low-frequency response (±6dB).
- Treble Control: Adjusts the high-frequency response (±6dB).
- Volume Knob: Controls the overall output volume.
- Input Indicator Lights:
- Red Light: Indicates RCA Input is active.
- Blue Light: Indicates Bluetooth Input is active.
4.2 Bluetooth Pairing
- Ensure the Bluetooth antenna is connected to the amplifier.
- Power on the A08 Pro amplifier.
- On your mobile device (phone, tablet, etc.), enable Bluetooth and search for available devices.
- Select "AIYIMA" from the list of devices to pair.
- Once paired, the blue indicator light on the amplifier will illuminate, and you can stream audio wirelessly.
- If Bluetooth is disconnected, the amplifier will automatically switch to the RCA input.
4.3 Using with AIYIMA T8 Preamp (Optional)
The A08 Pro can be paired with an AIYIMA T8 tube preamp for enhanced audio processing. Connect the T8's audio output to the A08 Pro's RCA input. Use the T8 to switch between PC-USB mode and other inputs, and the A08 Pro will amplify the signal from the T8.
4.4 Product Demonstration Video
5. Specifications
| Parameter | Value |
|---|---|
| Product Name | A08 Pro TPA3255 Amplifier 300W |
| Chipset | TPA3255+QCC5125+CS4344+NE5532P+CD4052 |
| Bluetooth Chip | QCC5125 |
| Bluetooth Version | 5.0 |
| Supported Protocols | SBC, AAC, APTX, APTX-LL, APTX-HD, LDAC |
| Output Power | 300W x 2 (4Ω load) |
| Speaker Impedance | 4-8 Ohm |
| Channel Output | Stereo output (left and right channels) |
| Working Power Supply | DC 24-48V, 5A or more |
| Treble and Bass Control | ±6db |
| Signal to Noise Ratio | ≥104db |
| Input Sensitivity | 0.775V |
| Frequency Response | 20-20Khz (±1db) |
| Input Mode | RCA / Bluetooth |
| Audio Input Supported Equipment | Mobile phone, tablet, computer, MP3, TV, etc. |
| Output | RCA (passive speakers), AUX (active speakers / active subwoofers / power amplifiers) |
| Product Size (L*W*H) | 152mm * 122mm * 40mm |
| Product Net Weight | 691g |
| Package Weight | 907g |
5.1 Power Output Table
| Supply Power (VA) | Impedance (Ω) | Rated Power (W) | Maximum Power (W) |
|---|---|---|---|
| 24V/5A | 4Ω | 96W | 97W |
| 6Ω | 64W | 65W | |
| 8Ω | 48W | 49W | |
| 32V/5A | 4Ω | 150W | 152W |
| 6Ω | 78W | 80W | |
| 8Ω | 75W | 76W | |
| 32V/10A | 4Ω | 145W | 152W |
| 6Ω | 100W | 105W | |
| 8Ω | 73W | 76W | |
| 36V/10A | 4Ω | 170W | 180W |
| 6Ω | 120W | 128W | |
| 8Ω | 85W | 90W | |
| 48V/5A | 4Ω | 150W | 168W |
| 6Ω | 112W | 115W | |
| 8Ω | 78W | 83W | |
| 48V/12.5A | 4Ω | 280W | 300W |
| 6Ω | 200W | 230W | |
| 8Ω | 135W | 150W |
6. Maintenance
- Keep the amplifier in a dry, well-ventilated area, away from direct sunlight, heat sources, and moisture.
- Clean the unit with a soft, dry cloth. Do not use liquid cleaners or aerosols.
- Ensure proper airflow around the unit to prevent overheating.
- Avoid placing heavy objects on top of the amplifier.
- If the unit will not be used for an extended period, unplug it from the power outlet.
7. Troubleshooting
- No Sound:
- Check all cable connections (power, input, speakers) are secure.
- Ensure the correct input mode (RCA or Bluetooth) is selected.
- Verify the volume is turned up on both the amplifier and the audio source.
- Test with a different audio source or speakers to isolate the problem.
- Distorted Sound:
- Reduce the volume on both the amplifier and the audio source.
- Check speaker impedance matches the amplifier's specifications.
- Ensure audio cables are not damaged or poorly connected.
- Adjust Bass and Treble controls to neutral positions.
- Bluetooth Connection Issues:
- Ensure the Bluetooth antenna is properly attached.
- Verify Bluetooth is enabled on your source device and the amplifier is in pairing mode (or already paired).
- Move the source device closer to the amplifier to reduce interference.
- Try unpairing and re-pairing the device.
- VU Meter Not Moving:
- Ensure audio is playing and the volume is sufficiently high.
- Check all connections.
8. Warranty and Support
The AIYIMA A08 Pro amplifier typically comes with an 18-month warranty. For specific warranty details, returns, or technical support, please refer to your purchase documentation or contact the seller directly. You can also visit the AiyimaTechnology Store on AliExpress for further assistance.
