Partial schematic for the Samsung SM-A720, Galaxy A7 2017, focused on the microphone, speaker and buzzer circuits, supplied as a 1.42 MB PDF.

PDF document named TDA2824, a designation used for a dual low-voltage audio power amplifier IC.

PDF document named after TAS5614LA, a Texas Instruments Class-D audio power amplifier IC used in audio equipment.

Schematic in PDF form for a tone control board labelled NEWGEN TA2411B, where TC most likely stands for tone control.

Schematic file in PDF format, about 5.16 MB, titled BM62-64, which matches the naming of the Microchip BM62 and BM64 Bluetooth audio modules, likely a reference design…

Realtek ALC272 datasheet in PDF form, 1.28 MB. The ALC272 is a High Definition Audio codec found on many laptops, providing headphone, speaker and microphone interfaces.

PDF document for the TDA7491P, a 1.45 MB file that is most likely the component datasheet rather than a board schematic, judging by the part-number name.

Audio schematic for the Samsung SM-A21s covering microphone, loudspeaker and earpiece, PDF, 3.82 MB.

Audio section of the Samsung SM-A11 schematic covering the microphones, loudspeaker and earpiece, as a PDF of 4.33 MB.

K-Lite Codec Pack Mega installer, version 18.4.8, a 63.2 MB Windows executable. The Mega edition bundles audio and video codecs, DirectShow filters and Media Player…

A 159 KB PDF datasheet for SFFLY-LEAD-AV, which by its name is a fly lead for audio-video signals within the SF-prefixed product range; the equipment it connects is not…

Headset or hands-free section of the Samsung Galaxy A30s (SM-A30S) schematic, a 2.31 MB PDF, somewhat smaller than the other pages in the set.

Samsung SM-A10 audio schematic covering microphone, speaker and earpiece, provided as a 2.25 MB PDF.

Headset jack schematic page for the Samsung SM-A10, provided as a 1.22 MB PDF. It shows the jack detect line, stereo audio outputs, the headset microphone return and the…

Short 100 KB PDF datasheet for the STK465, a thick-film hybrid audio power amplifier module from the Sanyo STK range.

Boardview for the Apple left I/O board 820-1685, which carries the sound circuitry according to the name, packed in RAR.

Handsfree and headset audio schematic for the Samsung SM-A23, contained in a 2.78 MB PDF.

PDF schematic covering the microphone, loudspeaker and earpiece circuits of a handset, from a sectioned series of roughly 4.78 MB pages without a model in the name.

PDF schematic named only Ramsés, with no device type, brand or board number given, so its contents can only be confirmed by opening it.

Schematic section for the Samsung SM-A02S smartphone covering the handsfree audio circuit, supplied as a 1.79 MB PDF.

Schematic document in PDF format, about 1.80 MB, filed under the name TAS6534, which looks like a Texas Instruments part number from the TAS automotive class-D audio…

Audio schematic for the Samsung SM-A23 covering the microphone, loudspeaker and earpiece circuits, packed into a 2.79 MB PDF.

VLC media player version 3.0.18 installer for 32-bit Windows, 40.8 MB executable. VLC is a free open-source player that handles nearly every audio and video format…

Apple iMac A1150 M9 documentation archive described as SYMPHONY EVT MLB, document number 051-7066, revision 02.

Datasheet for the TPA6047A4, a Texas Instruments stereo audio power amplifier, provided as a 1.98 MB PDF.

PDF document whose Persian title translates as datasheets of amplifier ICs, filed here as a schematic but in practice a reference collection for audio amplifier chips.

Handsfree section schematic for the Samsung SM-A22 5G (Galaxy A22 5G), supplied as a 2.58 MB PDF.

Datasheet for the LM358, revision 7, a 133 KB PDF. The LM358 is a widely used dual operational amplifier found in power supplies, chargers, audio stages and control…

PDF datasheet for the TDA7297, a dual bridge audio power amplifier IC commonly found in televisions, monitors and small amplifier boards.

2.1 amplifier schematic using the 2SC5200 and 2SA1943 complementary power transistor pair, in a 184 KB PDF.

2.1 amplifier schematic built around the TDA7294, by Technical Mriganka, in a 219 KB PDF.

Schematic for the Xiaomi Mi 4 LTE smartphone, a 1.32 MB PDF. It documents the circuit connections used when diagnosing power, charging, audio, display or radio problems…

Large 109 MB RAR for the Apple iPhone 7 Plus; the name provides no board number, revision or contents list.

PDF datasheet covering the 2SD2251 NPN transistor, 95.7 KB in size and listed under the schematic category. The name contains nothing beyond the part number.