PAM8610 Stereo Amplifier Boards and Class-D Audio ICs

PAM8610 stereo amplifier boards, bare chips and related Class-D modules

Shop compact Class-D audio hardware centered on PAM8610 stereo speaker amplification. Most listings describe assembled dual-channel PAM8610 boards, but this collection also contains loose PAM8610-family IC choices, PAM8403/PAM8406 and PAM8302 modules, TPA3110-based boards and a few unrelated semiconductor selections. A board ready for integration, a bare QFN chip and a differently named amplifier do not ship with the same components or share a universal supply rating. Read the selected product variant for the device, form factor, color and quantity.

What a PAM8610 board does

A PAM8610-based module is a small two-channel analog-input speaker power stage for a suitable DC supply and two appropriately rated speakers. Its Class-D output stage switches at high frequency to improve efficiency relative to some linear amplifier arrangements, but the word “digital” in a seller title does not make it an I2S, USB, Bluetooth or digital-file decoder. It still needs an audio source at the board's intended input, a stable supply, suitable loudspeaker loading and responsible wiring. A bare PAM8610TR device needs a complete PCB and surrounding circuit before it performs this role.

Listings for the compact HW-009 style module describe roughly 30 × 25 × 2 mm, DC 7–15 V input, 10 W + 10 W at 8 Ω or 15 W + 15 W at 4 Ω, and recommend a filtered 12 V supply. These figures belong to the boards that actually specify them, not to every product here. A separate approximately 40 × 40 mm board with a 5.5 mm barrel-style input describes DC 7.5–15 V, recommended 12 V center-positive and 10 W + 10 W at 8 Ω. Another 3.5 mm-input board describes DC 8–12 V and specifically warns not to exceed its stated limit. Yet another delayed-start listing mentions DC 6–12 V. Do not apply a 15 V ceiling to a board whose own page specifies 12 V maximum. Verify actual board printing, connector polarity and product documentation for the chosen option.

What is in this mixed collection?

• PAM8610 assembled stereo boards: many individual and multi-pack listings describe dual-channel Class-D modules in the 2 × 10 W or 2 × 15 W headline class. Variants include 1, 2, 3, 5, 10 or 20 pieces where stated, while one product explicitly supplies four boards. Model tags include HW-009, XH-M120, HW-21 and HW-634 on particular listings, with different footprints, controls and input connections. Those board identities and wattage headlines are not a promise that all boards have the same topology.
• PAM8610 loose ICs: dedicated listings specify ten PAM8610 QFN40 chips or five PAM8610TR QFN-40 chips. They are loose surface-mount semiconductors, not ready-wired modules. Check the exact suffix, QFN footprint, exposed-pad requirements, pin assignment and the manufacturer's recommended layout before assembly.
• Multi-model chip selections: one ten-piece listing offers PAM8610TR, PAM8620TR, PAM8404KGR, PAM8403DR-H or PAM8406DR as distinct variants. The product title enumerates choices rather than promising a mixed bag of all five. A second ten-piece listing offers OZ8660LN, OZ8690LN, PI3USB30532ZLEX, QCA8172 or PAM8610; only its PAM8610 selection is a PAM8610 part. Do not infer package, pin compatibility or even audio-amplifier function from a listing title shared with unrelated chips.
• Other audio modules: a PAM8406 stereo module listing is separate from PAM8610. PAM8403 modules are described for a low-voltage 2.5–5 V supply and 2 × 3 W headline class; their product titles mention 1/5/10-piece choices but the observed Shopify option is “CN,” so verify the actual pack count before assuming any of those quantities. PAM8302 modules are described as single-channel 2.5 W devices, not stereo 2 × 15 W PAM8610 boards.
• TPA3110 boards: certain “PAM8610” headlines actually describe TPA3110-based amplifier boards with their own input range, roughly 8–26 V or 8–24 V depending on the page. A TPA3110 board must be selected and operated according to its own schematic and listing, never the PAM8610 supply or pinout.
• Other mismatched listings: IGCM/IKCM F60GA power modules, SI8621/SI8421 digital isolator choices and 74HC-series logic chips are present on product pages in this collection. They are not PAM8610 audio amplifiers, even when their Shopify collection placement implies proximity. The named variant determines what ships; no products have been removed or reclassified.

Power, speakers and honest output ratings

The common “2 × 15 W” claim is conditional. The board listings that mention it associate it with 4 Ω loads, while 2 × 10 W is often quoted at 8 Ω. Actual continuous, usable audio power depends on supply voltage and current capacity, board design, channel drive, load impedance, distortion threshold, temperature and test method. A 12 V/2 A or 12 V/3 A recommendation on a particular listing does not make every source with a 12 V label adequate for both channels at maximum output. Nor is a seller's “90% efficiency” a guarantee across all loads and operating points. Select speakers and power supply based on the particular board's limits and realistic desired listening level.

Many of these compact Class-D boards use separate speaker outputs for each channel. Several source descriptions expressly warn that left and right speaker “negative” terminals cannot be tied together or to ground. Treat each channel's output pair as independent unless the selected board's circuit documentation explicitly says otherwise; do not use a shared-return speaker harness by analogy with an older single-ended stereo amplifier. The 3.5 mm socket, when present on a specific module, is an audio input feature and does not establish a shared speaker ground. Likewise, keep any exposed amplifier output away from an audio input or microcontroller input.

Check connector polarity before powering a board. A listing for a 40 mm board says its 12 V jack is center-positive, whereas many thin 30 mm boards use other terminal arrangements; never assume every PAM8610 PCB has the same power jack. Supply polarity reversal, shorted outputs and loads below a board's design range can destroy a module despite a seller's general protection claims. Keep leads and layout consistent with the board design and avoid unverified bridging, paralleling or combining of two speaker outputs. This is a selection guide, not a substitute for the selected manufacturer's or module maker's electrical instructions.

Choose the right version before checkout

1. Confirm the actual part: read the chip or board model and the selected variant. “PAM8610” appearing in a long headline does not turn TPA3110, PAM8403, PAM8302, isolators, logic chips or power modules into PAM8610 products.
2. Choose chip versus assembled board: QFN40/QFN-40 ICs require a PCB, assembly process and complete external circuit. The ready-built boards contain mounted components but still require an appropriate source, supply and loudspeakers. A board listing does not by itself include a power adapter, enclosure or speakers.
3. Identify your board layout: HW-009 mini PCB, larger jack-equipped board, XH-M120 and other variants can differ in size, input, volume control, power connector and mute/delay behavior. Some option names such as “mini,” “black,” “Red” and “module” are color or design selectors rather than a guarantee of equivalent circuitry.
4. Read pack size from the chosen option: a 1/5/10-piece or 1–20-piece listing exposes distinct quantities; the four-board bundle names four boards; a ten-chip QFN lot is ten bare ICs. For a listing whose option only says “CN” or “China Mainland,” the title's multiple quantities are ambiguous, so verify before relying on a pack count.
5. Match voltage and load together: compare the selected board's minimum and maximum voltage, supply connector polarity and speaker impedance. PAM8403 low-voltage boards and TPA3110 higher-voltage boards do not inherit the PAM8610 HW-009 range. A speaker's wattage label alone does not specify its impedance or safe amp operating point.
6. Check signal input and controls: analog line-level input, 3.5 mm input, onboard volume adjustment, mute or start-up delay are board-specific features. Do not infer Bluetooth reception, USB decoding, or a particular protection circuit from “digital,” “HD” or “Hi-Fi” marketing language.
7. Plan installation: provide a stable low-ripple supply, correctly routed source and speaker wiring, adequate space around the PCB and suitable strain relief. Check electromagnetic interference and system grounding in the final enclosure, especially near radios or sensitive analog circuits.

Frequently asked questions

Is PAM8610 a 15 W + 15 W guarantee? No. That is a common module headline under particular load and supply conditions. A separate listing quotes 2 × 7 W RMS, which underscores that test conditions and board design matter. Compare the exact board's specified conditions rather than combining the largest figures from different sellers.

Can I run every board at 15 V? No. Some list 7–15 V, others 7.5–15 V, 8–12 V or 6–12 V. Follow the selected board's own documented rating and connector polarity.

Can I join the two speaker negative wires? Do not do so on an unknown board. Multiple product descriptions warn that their left and right output pairs must remain separate. Confirm the actual output topology before using any shared-return wiring.

Does a PAM8610TR variant include an assembled amplifier? In the loose-chip listings it is an IC choice, not a PCB. Select an explicitly named board if you need an assembled module.

Are PAM8403, PAM8302 and TPA3110 drop-in alternatives? No. They differ in channel count, supply class, interfaces, physical layout and circuit requirements. Compare their own documentation.

Model numbers identify devices and seller options for selection, not manufacturer authorization or certification. Claims of “original,” “pure digital,” universal protection or universally rated output are not independently established by the mixed listings in this collection.