High Definition Audio
Type
Integrated
HD Stereo Codec
Realtek 2-channel ALC221 codec
Audio I/O Ports
Front microphone-In (150-K ohm Input Impedance)
Rear Line-In/Microphone input (150-K ohm Input Impedance, function is configurable by audio
driver)
Rear Line-Out* (190 ohms Output Impedance, expects at least a 10-K ohm load)
Front Headphone-Out (0.5 Ohm Output Impedance, expects at least a 32 ohm load)
Front Microphone/Headphone jack is re-task able to provide Microphone input, line-in or Headphone
output to support connecting two headphones to the front of the system. When configured as a
second front headphone output, both front headphone outputs are always driven with the same
signal.
All ports are 3.5mm
Internal Speaker Amplifier
1.5W amplifier for the internal speaker only. External speakers must be powered externally. Rear
Line-in audio port is re-taskable as either Line-in or Microphone-In.
Multi-streaming Capable
Multi-streaming can be enabled in the Realtek control panel to allow independent audio streams to
be sent to/from the front and rear jacks.
Sampling
8 kHz - 192 kHz
Wavetable Syntheses
Yes – Uses OS soft wavetable
Analog Audio
Yes
# of Channels on Line-Out
Stereo (Left & Right channels)
Internal Speaker
Yes
External Speaker Jack
Yes
Full Duplex
Yes
QuickSpecs
HP ProDesk 405 G1 Microtower Business PC
Technical Specifications - Audio
DA - 14697 North America — Version 4 — December 23, 2013
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