Overview

The AIYIMA A07 Pro is a compact Class-D stereo amplifier built on TI’s TPA3255. It integrates Bluetooth for wireless input alongside analog RCA and offers a line output for feeding active devices. The design targets budget desktop and small-room setups that need simple, one-box amplification with wireless convenience [2].

Scientific Validity

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Manufacturer specs list total harmonic distortion of 0.002% and SNR of 90 dB for the amplifier section, with Bluetooth implemented via Qualcomm’s QCC304X (5.2) [2]. Independent bench testing characterizes overall noise/distortion behavior as competent for the class with adequate output capability for typical desktop use [1]. These figures are below “state-of-the-art transparent” thresholds but comfortably inside ranges that are generally indistinguishable in normal listening once speakers and rooms dominate system error.

Technology Level

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The architecture is conventional for modern budget Class-D: TPA3255 power stage, NE5532 op-amps, and QCC304X Bluetooth. It supports standard 16–24 bit / 44.1–48 kHz BT operation and accepts 24–48 V external power supplies. Replaceable dual op-amp packages add basic service/customization flexibility. Overall, implementation reflects mainstream practice rather than novel engineering [2].

Cost-Performance

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Target price: 78 USD (official store, no-PSU option) [2].
Cheapest equal-or-better comparator: Fosi BT20A Pro, 79.99 USD (official store). It provides Bluetooth input and comparable or better published core metrics (THD+N ≤0.003%, SNR ≥110 dB) and has independent lab coverage [3][4][6].

No cheaper product offering equivalent user-facing functions and equal-or-better measured performance was identified; therefore CP = 1.0.

Reliability & Support

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The platform (TPA3255) is widely used and parts are readily available, but long-term, independent reliability data specific to A07 Pro are limited. Warranty/support are provided through Aiyima’s channels; documentation and accessory options (various power supplies) are available on the official site [2].

Rationality of Design Philosophy

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The product prioritizes practical integration—compact power amplification with built-in Bluetooth and a line out—over exotic features. It’s a straightforward solution for simple two-channel systems where convenience and price are paramount.

Advice

Choose A07 Pro if you need a small, inexpensive wireless amp for desktop or small-room speakers. Match the power supply voltage/current to your output needs per the manufacturer guidance (higher-voltage PSUs allow more headroom). If you want an alternative with similar functions and strong measurements, also check Fosi BT20A Pro and compare current prices and third-party data [3][4][6].

References

[1] Audio Science Review — Aiyima A07 Pro Amplifier Review, May 20, 2023, https://www.audiosciencereview.com/forum/index.php?threads/aiyima-a07-pro-amplifier-review.44864/ (accessed Aug 15, 2025). The summary states “competent levels of noise and distortion.”
[2] Aiyima (official) — A07 Pro product page, price/specs (TPA3255, QCC304X BT 5.2, THD 0.002%, SNR 90 dB; selectable PSUs), https://www.aiyima.com/products/aiyima-a07-pro (accessed Aug 15, 2025).
[3] Fosi Audio (official) — BT20A Pro product page, price from 79.99 USD; spec table incl. THD+N and SNR, https://fosiaudio.com/products/bt20a-pro-2-channel-bluetooth-power-amplifier (accessed Aug 15, 2025).
[4] Audio Science Review — Fosi Audio BT20A Pro Amplifier Review, Apr 10, 2023, https://www.audiosciencereview.com/forum/index.php?threads/fosi-audio-bt20a-pro-amplifier-review.43751/ (accessed Aug 15, 2025).
[5] Amazon.com — AIYIMA A07 Pro listing (market availability; general spec block), https://www.amazon.com/Upgraded-AIYIMA-TPA3255-Amplifier-Bluetooth/dp/B0BN8H8X2Z (accessed Aug 15, 2025).
[6] Fosi Audio (official) — BT20A Pro overview, additional spec/product info, https://fosiaudio.com/pages/2-1-channel-amplifier-bt20a-pro (accessed Aug 15, 2025).

(2025.8.15)