A07 MAX 600W Home Audio Power Amplifier

Powerful, Flexible Home Audio Amplifier for 2.0 Stereo or 600W Mono

The AIYIMA A07 MAX TPA3255 Power Amplifier is designed for clear, controlled and reliable home audio. Delivering up to 300W x2 in stereo mode or up to 600W in PBTL mono mode (at 48V/12A), it provides strong, dynamic drive for passive speakers in living rooms, media rooms and entertainment spaces. Using a modern TPA3255 Class D architecture, it achieves low distortion (THD+N 0.007%) and a wide 20Hz-20kHz frequency response (±1dB), preserving detail from bass to treble even at higher listening levels.

This 2.0 stereo amplifier supports DC 24-48V power supplies (5A or higher) and includes an AUX OUT for feeding an active subwoofer or an additional power amplifier. The 3.5mm AUX OUT passes signal without volume control, making it suitable as a clean line-level output to a next-stage amplifier. With an input sensitivity of 1V and SNR ≥110dB, the A07 MAX is engineered for low background noise and stable operation with a wide range of audio sources such as CD players, DACs, streamers and mobile devices (via appropriate source equipment).

For users who like to fine-tune their system, the A07 MAX supports replaceable op-amp chips, compatible with OPA2604AP, OPA2134, MUSE02, LME49720NA, LM4562, AD827AQ and others, allowing tailored sound characteristics within a consistent, robust platform. Clear LED indicators help you confirm power and operating status at a glance, while front-panel controls (including volume and tone adjustment, depending on configuration) allow straightforward tailoring of bass, treble and overall level for your room and speakers. The unit is compact and easy to position in typical home setups.

The amplifier is supplied with one A07 MAX unit and a compatible power adapter (32V 5A, 36V 6A or 48V 5A, depending on the selected option), and includes an 18‑month warranty for added peace of mind.

Why It's a Smart Choice

• Flexible power configuration: 300W x2 stereo or 600W mono PBTL for different room sizes and speaker setups.
• Clean, detailed sound: low distortion, wide frequency response and high SNR for clear playback at low and high volumes.
• System-friendly design: AUX OUT for subwoofers or extra amps and swappable op-amps for customizable sound.

FAQ

Q: All cables are connected but there is no sound. What should I check?
A: First confirm the amplifier is powered on and the indicator light is lit. Then verify that you have selected the correct mono/stereo mode and that speaker terminals are wired correctly. Finally, check the source device is playing, not muted, and its volume is not at minimum.

Q: Why is the sound distorted at higher levels?
A: Distortion often occurs when both the source device and the amplifier are set near maximum volume. Reduce the volume on the source device or on the amplifier to keep the input level within a suitable range.

Q: Why does the volume change when I switch between different sources (for example, CD and mobile phone)?
A: Different devices output different signal levels. Many mobile phones output around 0.35V, while CD players commonly output around 1V. This naturally results in different perceived loudness at the same amplifier volume setting.

Q: What causes a loud hum or buzzing noise from the speakers?
A: Common causes include non-original or noisy power supplies and unshielded signal cables. Try the original or a high-quality power supply and use shielded audio cables. To isolate the issue, disconnect all inputs and leave only power and speaker cables connected; if noise disappears, it originates from the audio source or cabling. If it remains, it may be related to the power supply or external interference.

Q: There is no sound or the sound is very low after connecting speakers. Why?
A: Confirm the audio source is on and its volume is raised. Then check that the speakers are compatible with the amplifier (for example, not a fixed-voltage PA speaker) and that their power handling and impedance are appropriate for this unit.

Q: Why are the left and right channels not balanced in volume?
A: Check the audio source balance settings, the input cable, any balance or separate channel volume controls on your system, and the speaker cables. Also confirm the speakers are placed symmetrically and at similar distances from the listening position.

Q: Why is there a thump when switching the system on or off?
A: Follow the correct power-up and power-down sequence. When turning on, start with the audio source, then preamp/DAC, then this amplifier, and finally the speakers. When turning off, reverse the order. This helps avoid transient thumps caused by capacitor charge and discharge, protecting both amplifier and speakers.