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HARDWARE ARCHIVES // AUDIO

[ SUBCATEGORY DIRECTORY // 9 FILES // 142 PART RECORDS ]

Browse sound subcategories

Open a static subcategory file to browse individual models, their compatibility and preservation notes, local diagrams, and product-specific sources.

SUBCATEGORY FILE // 30 PART RECORDSISA legacy sound cards

Legacy ISA audio cards.

OPEN SUBCATEGORY FILE →SUBCATEGORY FILE // 23 PART RECORDSPCI sound cards

Conventional PCI audio cards.

OPEN SUBCATEGORY FILE →SUBCATEGORY FILE // 21 PART RECORDSPCI Express sound cards

PCI Express add-in sound cards.

OPEN SUBCATEGORY FILE →SUBCATEGORY FILE // 32 PART RECORDSUSB audio interfaces

USB recording and production interfaces.

OPEN SUBCATEGORY FILE →SUBCATEGORY FILE // 06 PART RECORDSOnboard audio codecs

Motherboard audio codec ICs.

OPEN SUBCATEGORY FILE →SUBCATEGORY FILE // 02 PART RECORDSUSB audio adapters

Compact USB audio adapters.

OPEN SUBCATEGORY FILE →SUBCATEGORY FILE // 19 PART RECORDSDAC converters

USB DAC products and converter ICs.

OPEN SUBCATEGORY FILE →SUBCATEGORY FILE // 05 PART RECORDSMIDI interfaces

Dedicated computer MIDI interface hardware.

OPEN SUBCATEGORY FILE →SUBCATEGORY FILE // 04 PART RECORDSThunderbolt audio interfaces

Computer audio interfaces with Thunderbolt connectivity.

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[ COMPONENT RECORD // AUDIO PATH ]

Sound
hardware.

Computer audio can be provided by onboard codecs, discrete sound cards, USB audio devices, professional interfaces, or external DACs. The entire analog/digital signal path affects compatibility and noise.

Original schematic illustration of an audio device and signal path
SCHEMATIC // SIGNAL PATH

CLASS RECORD: consumer and production audio interfaces. Marketing terms such as "surround," "studio," or "hi-res" do not replace full codec, I/O, and driver specifications.

Reference specifications

Digital conversionDAC converts digital samples to analog output; ADC converts analog input. Sample rate, bit depth, channel count, filters, noise, and distortion are device-specific.
InterfacesAnalog 3.5 mm/RCA/TRS/XLR, S/PDIF optical/coaxial, HDMI audio, USB, and PCIe are common. Physical connector shape does not establish signal type.
FeaturesMicrophone preamps, phantom power, hardware mixing, MIDI, DSP effects, headphone amplification, and multichannel routing vary by product.
SoftwareDriver model (class-compliant, ASIO, WASAPI, ALSA, etc.), latency, supported OS, firmware, and application support should be recorded.

Setup & diagnosis

  • Identify input/output connectors, balanced/unbalanced wiring, line/mic/instrument levels, impedance, and phantom-power requirements.
  • Never connect phantom power to equipment not designed to tolerate it. Follow the interface and microphone manuals.
  • Check sample-rate agreement, clock source, operating-system routing, buffer size, and driver version when diagnosing dropouts.
  • Ground loops, poor shielding, overloaded inputs, and incorrect gain staging can sound like defective hardware.
  • Catalog codecs, DAC/ADC ICs, headphone amplifiers, firmware, driver versions, and measured tests separately from subjective impressions.

Sources & further reading

  1. Analog Devices — Audio and data-conversion articlesPrimary semiconductor manufacturer technical articles on ADC/DAC behavior. Original page is gone; this is the Internet Archive’s copy.
  2. USB-IF — USB specifications and class documentsStandards and document library for USB audio devices.
  3. ALSA Project — Linux audio documentationOpen-source technical documentation for supported audio devices and drivers.