Preliminary Product Definition
with microphone input and headphone output

OEM Series

USB headphone/microphone Adapter


Key Features

    • USB digital stereo, full-duplex enables two-way digital sound with PC or Gaming Console
    • USB-IF Certified , can customize USB device and string descriptor
    • USB audio controller , audio class encoder/decoder
    • USB serial interface engine , USB transceiver, 2 end points (FIFO)
    • Automatic detection using standard Windows 2000, Windows XP drivers
    • Standard 16 bit USB audio , 8Khz/11.025KHz/22.05KHz/44.1KHz/48KHz
    • Mute , Volume control operates PC volume control window
    • No sound card required for PC
    • No external power supply needed



Voice recognition

Voice command and control

Internet phone and chat




Small Size:
2.86" x 1.13" without optional switch/LED board

2.86" x 1.59" with optional switch/LED board
( picture above shows switch/LED board)

Switch/LED options:

Volume up/down

Headphone mute

Microphone mute

The USB-SP2 is a USB powered stereo headphone adapter system utilizing a USB audio and control interface. It can be used to adapt standard headphones and microphones to connect to computers via the USB port.

Audio outputs are stereo headphone. Audio inputs are USB and microphone. The microphone input is sent via the USB port to the PC.

Volume and mute control can be operated by either the PC or the optional front panel of the USB-SP2. This allows for central control , avoiding mismatched volume levels in common powered speakers/PC's.

The USB-SP2 uses the standard Windows USB drivers. The identifying code can be easily modified to display any company or brand when the USB driver detects the USB-SP2. Ideal for creating brand recognition for headphone products.


Example of casing options


ILAB America Inc. 45 Hemlock Street, Selden , NY 11784 631-696-4418






































USB-SP2 Specifications


Note: USB-SP2 is a PCB subassembly. Plastic casing shown for example only and not supplied as standard.


Technical Specifications

Standard 16 bit USB audio

Audio Sampling Rates: 8Khz / 11.025KHz / 22.05KHz / 44.1KHz / 48KHz

Frequency Response:

THD+N: -56dB (Headphone), -67dB (Mic)
Signal to Noise Ratio : -75dB (headphone), -69dB (Mic)
Dynamic Range: 76dB (Headphone) , 69dB (Mic)
Output Level Adjustment: Uses Windows USB driver
Input Level Adjustment: Uses Windows USB driver

USB Series B

Stereo microphone, 1/8" mini jack

Stereo Headphone, 1/8" mini jack







Power Requirements: USB powered

Operating Conditions
5-45 degrees Celsius , natural convection cooling
0-90% relative humidity ( non-condensing )

Regulatory Notices
Complies with FCC Part 15 , class A digital device
UL listed for US and Canada


ILAB America Inc. 45 Hemlock Street, Selden , NY 11784 631-696-4418
iLAB America is an Audio/Video and Gaming Peripherals Developer and iPhone App Developer based in NY USA.